Carbon, Graphite, Or Carbonaceous Component Is Active Material Patents (Class 429/231.8)
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Patent number: 12230764Abstract: An all solid battery includes: a solid electrolyte layer of which a main component is oxide-based solid electrolyte; a first electrode layer that is provided on a first main face of the solid electrolyte layer and includes an active material; and a second electrode layer that is provided on a second main face of the solid electrolyte layer and includes an active material, wherein at least one of the first electrode layer and the second electrode layer includes an aggregate of carbon particles and a cavity, wherein the aggregate demarcates at least a part of the cavity.Type: GrantFiled: June 11, 2020Date of Patent: February 18, 2025Assignee: TAIYO YUDEN CO., LTD.Inventors: Sachie Tomizawa, Daigo Ito, Chie Kawamura, Kotaro Mizuno
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Patent number: 12206090Abstract: A negative active material for a rechargeable lithium battery includes a composite of silicon and crystalline carbon, wherein the silicon has an average particle diameter (D50) of about 10 nm to about 150 nm, and the crystalline carbon has an average particle diameter (D50) of about 5 ?m to about 20 ?m, and an aspect ratio of about 4 to about 10.Type: GrantFiled: November 13, 2023Date of Patent: January 21, 2025Assignee: SAMSUNG SDI CO., LTD.Inventor: Young-Min Kim
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Patent number: 12191492Abstract: An anode active material for a secondary battery according to an embodiment of the present disclosure includes an anode current collector, and an anode active material layer on at least one surface of the anode current collector. The anode active material layer includes an anode active material that includes a natural graphite and an artificial graphite. The artificial graphite has a form of single particles. An orientation index expressed as I(004)/I(110) is 15 or less.Type: GrantFiled: September 11, 2023Date of Patent: January 7, 2025Assignee: SK On Co., Ltd.Inventors: So Hyun Park, Kyung Hoon Kim, Chan Young Jeon
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Patent number: 12142769Abstract: Provided is a novel oxygen reduction catalyst having good stability and higher oxygen reduction performance. The oxygen reduction catalyst includes a composite oxide comprising a conductive tin oxide containing Zr.Type: GrantFiled: June 9, 2020Date of Patent: November 12, 2024Assignee: NATIONAL UNIVERSITY CORPORATION YOKOHAMA NATIONAL UNIVERSITYInventors: Akimitsu Ishihara, Takaaki Nagai
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Patent number: 12107219Abstract: A polymer, a polymer electrolyte and a lithium ion battery are provided. The polymer includes a main chain and side chains of the polymer, the side chains contain conjugated cyclic groups and epoxy multi-element cyclic groups; the conjugated cyclic group is selected from saturated or unsaturated C10-C20 conjugated aromatic groups; the epoxy multi-element cyclic group is selected from saturated or unsaturated C3-C8 epoxy multi-element cyclic groups; the main chain of the polymer is selected from polyalkoxy ether. The polymer, the polymer electrolyte and the lithium ion battery can improve interaction between the polymer electrolyte and an active substance in an electrode plate, increase the adhesion of the polymer electrolyte, avoid detachment occurring at an interface between the plate and the electrolyte, and improve the interface stability of the battery.Type: GrantFiled: August 4, 2023Date of Patent: October 1, 2024Assignee: SHENZHEN BTR NEW ENERGY TECHNOLOGY RESEARCH INSTITUTE CO., LTD.Inventors: Junhuan Li, Gengbiao Xu, Chenglin Yang, Zikun Li, Youyuan Huang
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Patent number: 12100834Abstract: A positive electrode active material, a method for preparation thereof and a positive electrode plate, a secondary battery and an electrical device containing the same are provided. The positive electrode active material has a core-shell structure, comprising a core, a first cladding layer covering the core, a second cladding layer covering the first cladding layer, wherein the core has a chemical formula of LiaAxMn1-yByP1-zCzO4-nDn, the first cladding layer comprises a first polymer containing an electron withdrawing group, the second cladding layer comprises a second polymer, and wherein the second polymer comprises one or more of plant polysaccharides, marine polysaccharides and the derivatives thereof. The positive electrode active material of the present application enables a secondary battery to have a relatively high energy density, while further having a significantly improved rate performance, cycling performance and/or high-temperature stability.Type: GrantFiled: March 25, 2024Date of Patent: September 24, 2024Assignee: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITEDInventors: Qingyan Ma, Yingjie Guan, Yuzhen Zhao, Yan Wen, Qisen Huang
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Patent number: 12080890Abstract: The present invention provides a carbonaceous material suitable for a negative electrode active material for non-aqueous electrolyte secondary batteries (e.g., lithium ion secondary batteries, sodium ion secondary batteries, lithium sulfur batteries, lithium air batteries) having high charge/discharge capacities, and preferably high charge/discharge efficiency and low resistance, a negative electrode comprising the carbonaceous material, a non-aqueous electrolyte secondary battery comprising the negative electrode, and a production method of the carbonaceous material. The present invention relates to a carbonaceous material having a nitrogen content obtained by elemental analysis of 3.5 mass % or more, a ratio of nitrogen content and hydrogen content (RN/H) of 6 or more and 100 or less, a ratio of oxygen content and nitrogen content (RO/N) of 0.1 or more and 1.0 or less, and a carbon interplanar spacing (d002) observed by X-ray diffraction measurement of 3.70 ? or more.Type: GrantFiled: December 8, 2022Date of Patent: September 3, 2024Assignee: KURARAY CO., LTD.Inventors: Takafumi Izawa, Kengo Tachikawa, Hideharu Iwasaki
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Patent number: 12074309Abstract: Provided is a lithium secondary battery including: a positive electrode plate that is a lithium complex oxide sintered plate with a thickness of 50 ?m or more; a negative electrode plate; a separator interposed therebetween; and an electrolytic solution. The sintered plate has a structure in which primary grains having a layered rock-salt structure are bound to each other, the lithium complex oxide has a composition represented by Lix(Co1-yMy)O2±?, wherein 1.0?x?1.1, 0<y?0.8, and 0??<1 are satisfied, and M is at least one selected from Mg, Ni, Al, Ti, and Mn, and the primary grains have a mean tilt angle of over 0° and 30° or less. The mean tilt angle is a mean value of angles defined by (003) planes of the primary grains and the plate face of the sintered plate.Type: GrantFiled: March 12, 2021Date of Patent: August 27, 2024Assignee: NGK INSULATORS, LTD.Inventor: Yukinobu Yura
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Patent number: 12054428Abstract: A method of making a layered MXene material comprises a) introducing dried MAX phase powder into a vessel under anhydrous, inert conditions, the MAX phase powder comprising a general formula of Mn+1AXn (n=1, 2, 3, or 4), wherein M is a transition metal or p-block metalloid selected from the group consisting of Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, W, Re, Cu, Ni, Ag, Zn, Cd, In, Sn, and Pb; interlayer A is a Group III, IV, or V metalloid selected from the group consisting of Al, Si, Ga, Ge, In, Sn, Pb, As, Bi, Sb, and X is one of C (carbon) and N (nitrogen); b) introducing a halogen and solvent to the dried MAX phase to create a halogen solution having a predetermined concentration; c) allowing a reaction to proceed for about 24 hours between 30-90° C. to create a reaction slurry comprising a MXene material.Type: GrantFiled: September 30, 2020Date of Patent: August 6, 2024Assignee: United States of America as represented by the Secretary of the Air ForceInventors: Ali M. Jawaid, Richard A. Vaia, Asra Hassan
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Patent number: 12051799Abstract: An anode for a lithium secondary battery includes an anode current collector, and an anode active material layer formed on the anode current collector. The anode active material layer including a lower anode active material layer formed on the anode current collector and an upper anode active material layer formed on the lower anode active material layer. Each of the lower anode active material layer and the upper anode active material layer includes a first anode active material and a second anode active material having a hardness less than that of the first anode active material. A total intrusion amount of mercury to pores having a diameter of 3 nm to 10 ?m in the anode active material layer measured by a mercury porosimeter is 0.27 ml/g or more.Type: GrantFiled: October 19, 2021Date of Patent: July 30, 2024Assignee: SK ON CO., LTD.Inventors: So Hyun Park, Hee Gyoung Kang, Hae Suk Hwang, Chan Young Jeon
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Patent number: 12015092Abstract: The present invention(s) is directed to novel conductive Mn+1Xn(Ts) compositions exhibiting high volumetric capacitances, and methods of making the same. The present invention(s) is also directed to novel conductive Mn+1Xn(Ts) compositions, methods of preparing transparent conductors using these materials, and products derived from these methods.Type: GrantFiled: February 23, 2022Date of Patent: June 18, 2024Assignee: Drexel UniversityInventors: Michael J Ghidiu, Michel W Barsoum, Yury Gogotsi, Aaron Thomas Fafarman, Andrew DeVries Dillon
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Patent number: 11981574Abstract: The present invention provides a fine silicon powder and the like including fine silicon particles having a microscopically measured particle diameter of 1 ?m or more and an average circularity determined in accordance with Formula (1) of 0.93 or more, in which an average particle diameter based on volume, which is measured by a laser diffraction scattering method, is in a range of 0.8 ?m or more and 8.0 ?m or less, an average particle diameter based on number, which is measured by the laser diffraction scattering method, is in a range of 0.100 ?m or more and 0.150 ?m or less, and a specific surface area, which is measured by a BET method, is in a range of 4.0 m2/g or more and 10 m2/g or less. Circularity=(4×?×projected area of particle)1/2/peripheral length of particle (1).Type: GrantFiled: December 2, 2020Date of Patent: May 14, 2024Assignee: MITSUBISHI MATERIALS CORPORATIONInventors: Yoshinobu Nakada, Naoki Rikita
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Patent number: 11929484Abstract: Disclosed in the present application is a compound, comprising nano silicon, a lithium-containing compound and a carbon coating, or comprising nano silicon, silicon oxide, a lithium-containing compound, and a carbon coating. The method comprises: (1) solid-phase mixing of carbon coated silicon oxide with a lithium source; and (2) preforming heat-treatment of the pre-lithium precursor obtained in step (1) in a vacuum or non-oxidising atmosphere to obtain a compound. The method is simple, and has low equipment requirements and low costs; the obtained compound has a stable structure and the structure and properties do not deteriorate during long-term storage, a battery made of cathode material containing said compound exhibits high delithiation capacity, high initial coulombic efficiency, and good recycling properties, the charging capacity is over 1920 mAh/g, the discharging capacity is over 1768 mAh/g, and the initial capacity is over 90.2%.Type: GrantFiled: February 27, 2018Date of Patent: March 12, 2024Assignee: BTR NEW MATERIAL GROUP CO., LTD.Inventors: Chunlei Pang, Lijuan Qu, Jianguo Ren, Min Yue
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Patent number: 11929494Abstract: An electrode material for a lithium ion secondary battery and method of forming the same, the electrode material including composite particles, each composite particle including: a primary particle including an electrochemically active material; and an envelope disposed on the surface of the primary particle. The envelope includes turbostratic carbon having a Raman spectrum having: a D band having a peak intensity (ID) at wave number between 1330 cm-1 and 1360 cm-1; a G band having a peak intensity (IG) at wave number between 1530 cm-1 and 1580 cm-1; and a 2D band having a peak intensity (I2D) at wave number between 2650 cm-1 and 2750 cm-1. In one embodiment, a ratio of ID/IG ranges from greater than zero to about 1.1, and a ratio of I2D/IG ranges from about 0.4 to about 2.Type: GrantFiled: January 10, 2023Date of Patent: March 12, 2024Assignee: NANOGRAF CORPORATIONInventors: Joshua J. Lau, Aaron Yost, James McKinney, Cary Michael Hayner, Jack Cavanaugh, Seonbaek Ha
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Patent number: 11916221Abstract: Composite anode materials and methods of making same, the anode materials including capsules including graphene, reduced graphene oxide, graphene oxide, or a combination thereof, and particles of an active material disposed inside of the capsules. The particles may each include a core and a buffer layer surrounding the core. The core may include crystalline silicon, and the buffer layer may include a silicon oxide, a lithium silicate, carbon, or a combination thereof.Type: GrantFiled: September 23, 2020Date of Patent: February 27, 2024Assignee: NANOGRAF CORPORATIONInventors: James McKinney, Cary M. Hayner, Joshua J. Lau, Seonbaek Ha, Francis Wang
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Patent number: 11916223Abstract: Provided is a rechargeable alkali metal-sulfur cell comprising an anode active material layer, an electrolyte, and a cathode active material layer comprising multiple particulates, wherein at least one of the particulates comprises one or a plurality of sulfur-containing material particles being partially or fully embraced or encapsulated by a thin shell layer of a conducting polymer network, having a lithium ion conductivity no less than 10?8 S/cm, an electron conductivity from 10?8 to 103 S/cm at room temperature (typically up to 5×10?2 S/cm), and a shell layer thickness from 0.5 nm to 10 ?m. This battery exhibits an excellent combination of high sulfur content, high sulfur utilization efficiency, high energy density, and long cycle life. Also provided are a powder mass containing such multiple particulates, a cathode layer comprising such multiple particulates, and a method of producing the cathode layer and the battery cell.Type: GrantFiled: May 9, 2019Date of Patent: February 27, 2024Assignee: Global Graphene Group, Inc.Inventor: Bor Z. Jang
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Patent number: 11901545Abstract: Methods for producing a negative electrode active material particle which includes a silicon compound particle containing a silicon compound that contains oxygen. The methods including preparing a silicon compound particle containing a silicon compound that contains oxygen; inserting Li into the silicon compound particle; and heating, while stirring, the Li-inserted silicon compound particle in a furnace to produce a negative electrode active material particle, wherein at least part of Si constituting the silicon compound particle is present in at least one state selected from oxide of Si2+ to Si3+ containing no Li, and compound containing Li and Si2+ to Si3+.Type: GrantFiled: February 2, 2022Date of Patent: February 13, 2024Assignee: SHIN-ETSU CHEMICAL CO., LTD.Inventors: Takakazu Hirose, Takumi Matsuno, Reiko Sakai, Kohta Takahashi, Hidekazu Awano
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Patent number: 11876224Abstract: An object of the present invention is to provide a negative electrode active material having excellent charge/discharge characteristics (charge and discharge capacities, initial coulombic efficiency, and cycle characteristics). The object is achieved by providing a negative electrode active material containing: a silicon-based inorganic compound (a) composed of silicon (excluding zerovalent silicon), oxygen, and carbon; and silicon (zerovalent) (b). The equivalent constituent ratio [Q units/(D units+T units+Q units)] indicating the chemical bonding state (D units [SiO2C2], T units [SiO3C], Q units[SiO4]) of the silicon (excluding zerovalent silicon) present in the silicon-based inorganic compound (a) is within the range of from 0.30 to 0.80 inclusive.Type: GrantFiled: November 27, 2018Date of Patent: January 16, 2024Assignee: DIC CorporationInventors: Peixin Zhu, Shinji Kato, Ryuuichi Kiyooka, Katsuhito Kuroki, Satoshi Katano, Takahito Ikuma
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Patent number: 11866597Abstract: The present disclosure relates to 2-dimensional MXenes surface-modified with catechol derivatives, a method for preparing the same, MXene organic ink including the same, and use thereof (e.g. flexible electrodes, conducive cohesive/adhesive materials, electromagnetic wave-shielding materials, flexible heaters, sensors, energy storage devices). Particularly, the simple, fast, and scalable surface-functionalization process of MXenes using catechol derivatives (e.g. ADOPA) organic ligands significantly improves the dispersion stability in various organic solvents (including ethanol, isopropyl alcohol, acetone and acetonitrile) and produces highly concentrated organic liquid crystals of various MXenes (including Ti2CTx, Nb2CTx, V2CTx, Mo2CTx, Ti3C2Tx, Ti3CNTx, Mo2TiC2Tx, and Mo2Ti2C3Tx). Such products offer excellent electrical conductivity, improved oxidation stability, excellent coating and adhesion abilities to various hydrophobic substrates, and composite processability with hydrophobic polymers.Type: GrantFiled: February 11, 2021Date of Patent: January 9, 2024Assignee: Korea Institute of Science and TechnologyInventors: Chong Min Koo, In Sik In, Tae Yun Ko, Daesin Kim, Se Hyun Doo, Seon Joon Kim, Soon Man Hong, Seung Sang Hwang, Kyung Youl Baek, Albert Lee, Sangho Cho
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Patent number: 11870055Abstract: The present application describes the use of a solid electrolyte interphase (SEI) fluorinating precursor and/or an SEI fluorinating compound to coat an electrode material and create an artificial SEI layer. These modifications may increase surface passivation of the electrodes, SEI robustness, and structural stability of the silicon-containing electrodes.Type: GrantFiled: January 28, 2021Date of Patent: January 9, 2024Assignee: Enevate CorporationInventors: Liwen Ji, Benjamin Yong Park, Robert A. Rango, Dong Sun, Frederic C. Bonhomme
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Patent number: 11837717Abstract: The present specification relates to a negative electrode active material which includes a silicon-based composite represented by SiOa (0?a<1), and a carbon coating layer distributed on a surface of the silicon-based composite, and which has a bimodal pore structure including nanopores and mesopores. In a lithium secondary battery including the negative electrode active material, an oxygen content in the silicon-based composite can be controlled to improve initial efficiency and capacity characteristics, and a specific surface area can also be controlled, and thus a side reaction with electrolyte can be reduced.Type: GrantFiled: September 23, 2016Date of Patent: December 5, 2023Assignee: LG ENERGY SOLUTION, LTD.Inventors: Hyun Chul Kim, Yong Ju Lee, Eun Kyung Kim
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Patent number: 11827520Abstract: Discussed herein are methods of orienting one-dimensional and two-dimensional materials via the application of stationary and rotating magnetic fields. The oriented one-dimensional and two-dimensional materials may exhibit macroscopic properties, and may be employed in various measurement devices as well as thermal and electrical shielding applications or battery devices. A single 1D or 2D material may be suspended in another material such as dionized water, polymer(s), or other materials during the orientation, and the suspension may remain as a liquid or may be solidified or partially solidified to secure the oriented material(s) into place. The 1D and 2D materials that respond to the magnetic orientation may further cause other elements of the suspension to be oriented in a similar manner.Type: GrantFiled: September 19, 2017Date of Patent: November 28, 2023Assignee: UNIVERSITY OF HOUSTON SYSTEMInventors: Jiming Bao, Feng Lin, Zhuan Zhu, Zhiming Wang
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Patent number: 11784315Abstract: A lithium secondary battery including a negative electrode in which a negative electrode mixture included in the negative electrode is formed by charge and discharge of the battery. This negative electrode is formed by charge-induced formation of lithium metal on a negative electrode current collector having a three-dimensional structure form. The lithium secondary battery forms lithium metal while being blocked from the atmosphere. Therefore, formation of a surface oxide layer (native oxide layer) on a negative electrode is blocked and a lithium dendrite growth suppressing effect is achieved by forming lithium metal on a negative electrode current collector having a three-dimensional structure form. The lithium secondary battery has a superior battery efficiency and reduces declines in lifetime properties.Type: GrantFiled: August 28, 2018Date of Patent: October 10, 2023Assignee: LG ENERGY SOLUTION, LTD.Inventors: Bora Jung, Eunkyung Park, Minchul Jang, Byoungkuk Son, Changhun Park, Doyeon Kim
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Patent number: 11777080Abstract: Provided herein are a negative electrode and a secondary battery including the same. In particular, the negative electrode includes: a current collector; a first active material layer including first active material particles and disposed on the current collector; and a second active material layer including second active material particles and disposed on the first active material layer, in which a lithium ion diffusion rate of the second active material particles is two to three times that of the first active material particles.Type: GrantFiled: July 4, 2017Date of Patent: October 3, 2023Assignee: LG ENERGY SOLUTION, LTD.Inventors: Hyeok Moo Lee, Sol Nip Lee, Song Taek Oh
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Patent number: 11757126Abstract: The present invention relates to a negative electrode active material which includes a secondary particle including a first particle which is a primary particle, wherein the first particle includes a first core and a first surface layer which is disposed on a surface of the first core and contains carbon, and the first core includes a metal compound which includes one or more of a metal oxide and a metal silicate and one or more of silicon and a silicon compound; a method of preparing the same; an electrode including the same; and a lithium secondary battery including the same.Type: GrantFiled: July 22, 2021Date of Patent: September 12, 2023Assignee: LG ENERGY SOLUTION, LTD.Inventors: Jung Hyun Choi, Yong Ju Lee, Eun Kyung Kim
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Patent number: 11735729Abstract: A nickel-based active material precursor includes a particulate structure including a core portion, an intermediate layer portion on the core portion, and a shell portion on the intermediate layer portion, wherein the intermediate layer portion and the shell portion include primary particles radially arranged on the core portion, and each of the core portion and the intermediate layer portion includes a cation or anion different from that of the shell portion. The cation includes at least one selected from boron (B), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), titanium (Ti), vanadium (V), tungsten (W), chromium (Cr), iron (Fe), copper (Cu), zirconium (Zr), and aluminium (Al), and the anion includes at least one selected from phosphate (PO4), BO2, B4O7, B3O5, and F.Type: GrantFiled: August 3, 2022Date of Patent: August 22, 2023Assignee: Samsung SDI Co., Ltd.Inventors: Pilsang Yun, Wooyoung Yang, Jangsuk Hyun
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Patent number: 11728472Abstract: A negative electrode for a nonaqueous electrolyte secondary battery, which is an example of embodiments, comprises a negative electrode core body and a negative electrode mixture layer provided on the surface of the negative electrode core body. The negative electrode mixture layer includes graphite and fibrous carbon. The BET specific surface area of the graphite included in the first region is smaller than the BET specific surface area of the graphite included in the second region. In addition, the average length of the fibrous carbon included in the first region is longer than the average length of the fibrous carbon included in the second region.Type: GrantFiled: December 16, 2020Date of Patent: August 15, 2023Assignees: PANASONIC HOLDINGS CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Masanori Sugimori, Yusuke Fukumoto, Yuji Yokoyama, Nobuhiro Hirano, Yo Kato
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Patent number: 11728471Abstract: A negative electrode for a nonaqueous electrolyte secondary battery, which is an example of embodiments, comprises a negative electrode core body and a negative electrode mixture layer provided on the surface of the negative electrode core body. The negative electrode mixture layer includes graphite and fibrous carbon. The BET specific surface area of the graphite included in the first region is smaller than the BET specific surface area of the graphite included in the second region. In addition, the average length of the fibrous carbon included in the second region is longer than the average length of the fibrous carbon included in the first region.Type: GrantFiled: December 16, 2020Date of Patent: August 15, 2023Assignees: PANASONIC HOLDINGS CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yusuke Fukumoto, Masanori Sugimori, Yuji Yokoyama, Nobuhiro Hirano, Yo Kato
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Patent number: 11710819Abstract: This invention relates to particulate electroactive materials consisting of a plurality of composite particles, wherein the composite particles comprise a plurality of silicon nanoparticles dispersed within a conductive carbon matrix. The particulate material comprises 40 to 65 wt % silicon, at least 6 wt % and less than 20% oxygen, and has a weight ratio of the total amount of oxygen and nitrogen to silicon in the range of from 0.1 to 0.45 and a weight ratio of carbon to silicon in the range of from 0.1 to 1. The particulate electroactive materials are useful as an active component of an anode in a metal ion battery.Type: GrantFiled: June 18, 2018Date of Patent: July 25, 2023Assignee: Nexeon LimitedInventors: Timothy Bogart, Simon Foxon, James Farrell, David Bent, Daniel Scarlett
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Patent number: 11705552Abstract: A negative active material for a rechargeable lithium battery and a rechargeable lithium battery including the same are disclosed, and the negative active material includes a primary particle of a crystalline carbon-based material and secondary particle that is an assembly of the primary particles, wherein a ratio of an average particle diameter (D50) of the secondary particle relative to an average particle diameter (D50) of the primary particle (average particle diameter (D50) of the secondary particle/average particle diameter (D50) of the primary particle) ranges from about 1.5 to about 5 and an aspect ratio of the primary particle ranges from about 1 to about 7.Type: GrantFiled: July 10, 2017Date of Patent: July 18, 2023Assignee: Samsung SDI Co., Ltd.Inventors: Ji Woo Ahn, Dongwoo Kim, Jaehou Nah, Bumjin Chang, Yurim Cha, Yeonjoo Choi, Ilyoung Choi
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Patent number: 11699782Abstract: A secondary battery in which graphite that is an active material can occlude and release lithium efficiently is provided. Further, a highly reliable secondary battery in which the amount of lithium inserted and extracted into/from graphite that is an active material is prevented from varying is provided. The secondary battery includes a negative electrode including a current collector and graphite provided over the current collector, and a positive electrode. The graphite includes a plurality of graphene layers. Surfaces of the plurality of graphene layers are provided substantially along the direction of an electric field generated between the positive electrode and the negative electrode.Type: GrantFiled: June 18, 2020Date of Patent: July 11, 2023Assignee: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.Inventors: Shunpei Yamazaki, Teppei Oguni, Tamae Moriwaka, Junpei Momo, Ryota Tajima, Nobuhiro Inoue
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Patent number: 11682757Abstract: Provided is a composite anode active material including: a carbonaceous material; a metal alloyable with lithium, located on a surface of the carbonaceous material; and a silicon coating layer located on a surface of the carbonaceous material, on a surface of the metal alloyable with lithium, or a combination thereof.Type: GrantFiled: November 3, 2017Date of Patent: June 20, 2023Assignee: UNIST (ULSAN NATIONAL INSTITUTE OF SCIENCE AND TECHNOLOGY)Inventors: Jaephil Cho, Jaekyung Sung, Seong Hyeon Choi, Jiyoung Ma, Yoonkwang Lee
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Patent number: 11652212Abstract: A cell includes a first current collector and a second current collector. A tail end of the first current collector exceeds a tail end of the second current collector by at least half a circle in a winding direction. The inventor of the present application finds that after the length of the first current collector is increased, and the tail end of the first current collector exceeds the tail end of the second current collector by at least half a circle, the following situation may occur: the outermost circle of the cell is the first current collector, the secondary outer circle is the first current collector, and the next secondary outer circle is the second current collector, such that both the outermost circle and the secondary outer circle of the cell are the first current collector.Type: GrantFiled: March 25, 2020Date of Patent: May 16, 2023Assignee: NINGDE AMPEREX TECHNOLOGY LIMITEDInventor: Jing Jiang
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Patent number: 11648521Abstract: Nanoporous carbon-based scaffolds or structures, and specifically carbon aerogels and their manufacture and use thereof are provided. Embodiments include a silicon-doped anode material for a lithium-ion battery, where the anode material includes beads of polyimide-derived carbon aerogel. The carbon aerogel includes silicon particles and accommodates expansion of the silicon particles during lithiation. The anode material provides optimal properties for use within the lithium-ion battery.Type: GrantFiled: February 27, 2020Date of Patent: May 16, 2023Assignee: Aspen Aerogels, Inc.Inventors: Nicholas A. Zafiropoulos, Roxana Trifu, Redouane Begag, Wendell E. Rhine, George L. Gould, Alexei A. Erchak, Harris R. Miller, Nicholas Leventis
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Patent number: 11605818Abstract: An anode material for a lithium ion secondary battery including a carbon material satisfying the following (1) to (3), (6), and (7): (1) an average particle size (D50) is 22 ?m or less, (2) D90/D10 of particle sizes is 2.2 or less, (3) a linseed oil absorption amount is 50 mL/100 g or less, (6) a portion of the carbon material with a sphericity of from 0.6 to 0.8 and a particle size of from 10 ?m to 20 ?m is 5% by number or more, and (7) a portion of the carbon material with the sphericity of 0.7 or less and a particle size of 10 ?m or less is 0.3% by number or less.Type: GrantFiled: January 29, 2018Date of Patent: March 14, 2023Assignee: Showa Denko Materials Co., Ltd.Inventors: Motohiro Isaka, Hideyuki Tsuchiya, Kento Hoshi, Tsutomu Satoh, Keita Suga
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Patent number: 11594757Abstract: Electrolytes, anodes, lithium ion cells and methods are provided for preventing lithium metallization in lithium ion batteries to enhance their safety. Electrolytes comprise up to 20% ionic liquid additives which form a mobile solid electrolyte interface during charging of the cell and prevent lithium metallization and electrolyte decomposition on the anode while maintaining the lithium ion mobility at a level which enables fast charging of the batteries. Anodes are typically metalloid-based, for example include silicon, germanium, tin and/or aluminum. A surface layer on the anode bonds, at least some of the ionic liquid additive to form an immobilized layer that provides further protection at the interface between the anode and the electrolyte, prevents metallization of lithium on the former and decomposition of the latter.Type: GrantFiled: March 2, 2017Date of Patent: February 28, 2023Assignee: STOREDOT LTD.Inventors: Doron Burshtain, Eran Sella, Niles Fleischer, Hani Farran, Leora Shapiro
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Patent number: 11588152Abstract: The present invention relates to a cathode active material for a secondary battery and a manufacturing method thereof. A cathode active material, according to one embodiment of the present invention, comprises silicon-based primary particles, and a particle size distribution of the silicon-based primary particles is D10?50 nm and D90?150 nm. The cathode active material suppresses or reduces tensile hoop stress generated in lithiated silicon particles during a charging of a battery to thus suppress a crack due to a volume expansion of the silicon particles and/or an irreversible reaction caused by the crack, such that the lifetime and capacity of the battery can be improved.Type: GrantFiled: August 23, 2017Date of Patent: February 21, 2023Assignee: Nexeon Ltd.Inventors: Seung Chul Park, Eui Joon Song, Young Tai Cho, Jee Hye Park
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Patent number: 11563206Abstract: Provided is a lithium secondary battery. The lithium secondary battery includes a negative electrode including a negative electrode active material layer, wherein the negative electrode active material layer includes a mixed negative electrode active material including graphite particles and low crystalline carbon-based particles, and the negative electrode active material layer has an apex of an exothermic peak in a temperature range of no less than 370° C. and no more than 390° C., as measured by differential scanning calorimetry (DSC).Type: GrantFiled: March 24, 2022Date of Patent: January 24, 2023Assignee: SK ON CO., LTD.Inventors: Jong Hyuk Lee, Dock Young Yoon, Hee Gyoung Kang
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Patent number: 11527756Abstract: The electrical resistance of active cathodic and anodic films may be significantly reduced by the addition of small fractions of conductive additives within a battery system. The decrease in resistance in the cathode and/or anode leads to easier electron transport through the battery, resulting in increases in power, capacity and rates while decreasing joules heating losses.Type: GrantFiled: June 6, 2021Date of Patent: December 13, 2022Inventor: George Clayton Hansen
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Patent number: 11492260Abstract: A problem to be solved by the present invention is to provide a carbonaceous material suitable for a negative electrode active material for non-aqueous electrolyte secondary batteries (e.g., lithium ion secondary batteries, sodium ion secondary batteries, lithium sulfur batteries, lithium air batteries) having high charge/discharge capacities and preferably high charge/discharge efficiency as well as low resistance, a negative electrode comprising the carbonaceous material, a non-aqueous electrolyte secondary battery comprising the negative electrode, and a production method of the carbonaceous material. The present invention relates to a carbonaceous material having a nitrogen element content of 1.0 mass % or more and an oxygen content of 1.5 mass % or less obtained by elemental analysis, a ratio of nitrogen element content and hydrogen element content (RN/H) of 6 or more and 100 or less, a ratio of oxygen element content and nitrogen element content (RO/N) of 0.1 or more and 1.Type: GrantFiled: July 4, 2018Date of Patent: November 8, 2022Assignee: KURARAY CO., LTD.Inventors: Takafumi Izawa, Kengo Tachikawa, Hideharu Iwasaki
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Patent number: 11476457Abstract: The present application discloses a negative active material, a method for preparing the same, and related secondary batteries, battery modules, battery packs and apparatus. The negative active material includes a core material and a polymer-modified coating layer on at least a part of its surface; the core material includes one or more of silicon-based materials and tin-based materials; the coating layer includes sulfur element and carbon element; in the Raman spectrum of the negative active material, the negative active material has scattering peaks at the Raman shifts of 900 cm?1˜960 cm?1, 1300 cm?1˜1380 cm?1 and 1520 cm?1˜1590 cm?1, respectively, in which the scattering peak at the Raman shift of 900 cm?1˜960 cm?1 has a peak intensity recorded as Il, the scattering peak at the Raman shift of 1520 cm?1˜1590 cm?1 has a peak intensity recorded as IG, and Il and IG satisfy 0.2?Il/IG?0.8.Type: GrantFiled: January 27, 2022Date of Patent: October 18, 2022Assignee: Contemporary Amperex Technology Co., LimitedInventors: Chengdu Liang, Yuzhen Zhao, Yingjie Guan, Yan Wen, Qisen Huang
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Patent number: 11476462Abstract: An LiFePO4 precursor for manufacturing an electrode material of an Li-ion battery and a method for manufacturing the same are disclosed. The LiFePO4 precursor of the present disclosure can be represented by the following formula (I): LiFe(1-a)MaPO4??(I) wherein M and a are defined in the specification, the LiFePO4 precursor does not have an olivine structure, and the LiFePO4 precursor is powders constituted by plural flakes.Type: GrantFiled: August 28, 2019Date of Patent: October 18, 2022Assignee: NATIONAL TSING HUA UNIVERSITYInventors: Lih-Hsin Chou, Li-Wen Hu, Chun-Yu Pan, Shao-Ting Hung, Kuei-Chao Wu
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Patent number: 11469009Abstract: A process for producing a highly conducting film of conductor-bonded graphene sheets that are highly oriented, comprising: (a) preparing a graphene dispersion or graphene oxide (GO) gel; (b) depositing the dispersion or gel onto a supporting solid substrate under a shear stress to form a wet layer; (c) drying the wet layer to form a dried layer having oriented graphene sheets or GO molecules with an inter-planar spacing d002 of 0.4 nm to 1.2 nm; (d) heat treating the dried layer at a temperature from 55° C. to 3,200° C. for a desired length of time to produce a porous graphitic film having pores and constituent graphene sheets or a 3D network of graphene pore walls having an inter-planar spacing d002 less than 0.4 nm; and (e) impregnating the porous graphitic film with a conductor material that bonds the constituent graphene sheets or graphene pore walls to form the conducting film.Type: GrantFiled: November 16, 2018Date of Patent: October 11, 2022Assignee: Global Graphene Group, Inc.Inventors: Aruna Zhamu, Bor Z. Jang
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Patent number: 11469410Abstract: An exemplary embodiment of the present invention provides a spiral-wound electrode assembly including: a negative electrode and a positive electrode, each of which is configured to include a substrate, and a first composite material and a second composite material formed on opposite surfaces of the substrate; and a separator disposed between the negative electrode and the anode, wherein the first composite material of the negative electrode is disposed farther away from a center of the electrode assembly than the second composite material of the negative electrode, and the first composite material of the negative electrode is oriented with respect to a first surface of the substrate of the negative electrode.Type: GrantFiled: November 28, 2017Date of Patent: October 11, 2022Assignee: SAMSUNG SDI CO., LTD.Inventors: Sangjun Lee, Bokhyun Ka, Kyeuyoon Sheem, Jinhyon Lee, Donghyuk Chang
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Patent number: 11469447Abstract: Electrolytes and electrolyte additives for energy storage devices comprising sulfonate or carboxylate salt based compounds are disclosed. The energy storage device comprises a first electrode and a second electrode, wherein at least one of the first electrode and the second electrode is a Si-based electrode, a separator between the first electrode and the second electrode, an electrolyte comprising at least two electrolyte co-solvents, wherein at least one electrolyte co-solvent comprises a sulfonate or carboxylate salt based compound.Type: GrantFiled: December 19, 2019Date of Patent: October 11, 2022Assignee: ENEVATE CORPORATIONInventors: Liwen Ji, Benjamin Yong Park
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Patent number: 11456527Abstract: The present disclosure is directed to antennas for transmitting and/or receiving electrical signals comprising a MXene composition, devices comprising these antennas, and methods of transmitting and receiving signals using these antennas.Type: GrantFiled: August 23, 2017Date of Patent: September 27, 2022Assignee: Drexel UniversityInventors: Yury Gogotsi, Babak Anasori
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Patent number: 11431046Abstract: An energy storage device having improved gravimetric energy density is provided, and methods of manufacturing the same. The device can be an electrochemical cell that includes: a negative electrode including a negative electrode active material in electrically conductive contact with a negative electrode current collector and a negative electrode tab including a first attachment end and a second attachment end, the first attachment end of the negative electrode tab being connected to the negative electrode current collector and the second attachment end of the negative electrode tab being connected to a negative terminal; an electrically insulative and ion conductive medium in ionically conductive contact with the positive electrode and the negative electrode; and an outer can containing the positive electrode, negative electrode and electrically insulative and ion conductive medium, where the negative terminal is electrically isolated from the outer can.Type: GrantFiled: August 21, 2018Date of Patent: August 30, 2022Assignee: NIO Technology (Anhui) Co., Ltd.Inventor: Marc W. Juzkow
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Patent number: 11430977Abstract: A lithium electrode and a lithium secondary battery including the same. More particularly, in the preparation of the lithium electrode, a protective layer for protecting the lithium metal is formed on the substrate, lithium metal may be deposited on the protective layer and then transferred to at least one side of the current collector to form a lithium electrode having a thin and uniform thickness, and the energy density of the lithium secondary battery using the lithium electrode thus manufactured may be improved.Type: GrantFiled: October 16, 2018Date of Patent: August 30, 2022Assignee: LG ENERGY SOLUTION, LTD.Inventors: Suk Il Youn, Byoungkuk Son, Junghun Choi, Minchul Jang
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Patent number: 11417873Abstract: Solid-state batteries, battery components, and related processes for their production are provided. The battery electrodes or separators contain sintered electrochemically active material, inorganic solid particulate electrolyte having large particle size, and low melting point solid inorganic electrolyte which acts as a binder and/or a sintering aid in the electrode.Type: GrantFiled: October 3, 2019Date of Patent: August 16, 2022Assignee: JOHNSON IP HOLDING, LLCInventors: Lazbourne Alanzo Allie, Adrian M. Grant, Devon Lyman, Lonnie G. Johnson, David Ketema Johnson
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Patent number: 11393687Abstract: A method of forming a semiconductor device structure comprises forming at least one 2D material over a substrate. The at least one 2D material is treated with at least one laser beam having a frequency of electromagnetic radiation corresponding to a resonant frequency of crystalline defects within the at least one 2D material to selectively energize and remove the crystalline defects from the at least one 2D material. Additional methods of forming a semiconductor device structure, and related semiconductor device structures, semiconductor devices, and electronic systems are also described.Type: GrantFiled: May 22, 2018Date of Patent: July 19, 2022Assignee: Micron Technology, Inc.Inventors: Roy E. Meade, Sumeet C. Pandey