The Hetero Ring Is A Cyclic Carbonate (e.g., Ethylene Carbonate, Propylene Carbonate, Etc.) Patents (Class 429/338)
  • Patent number: 11398644
    Abstract: Provided is a non-aqueous electrolyte for lithium ion battery, comprising a compound A represented by structural formula I and a compound B represented by structural formula II: Wherein, in formula I, R1 is selected from alkylene having 1-5 carbon atoms or fluorine substituted alkylene having 1-5 carbon atoms; R2 is selected from anyone of alkylene having 1-5 carbon atoms, fluorine substituted alkylene having 1-5 carbon atoms or carbonyl; In formula II, R3, R4, R5, R6, R7 and R8 are each independently selected from hydrogen, fluorine atom or a group containing 1-5 carbon atoms. The compound A and compound B of the non-aqueous electrolyte can form a passivation film formed by reduction, decomposition and combination reactions on the surface of negative electrode material of lithium-ion battery, thereby improving thermal stability of the passivation film and high-temperature cycle and storage performance of the battery.
    Type: Grant
    Filed: December 28, 2017
    Date of Patent: July 26, 2022
    Assignee: SHENZHEN CAPCHEM TECHNOLOGY CO., LTD.
    Inventors: Qiao Shi, Shiguang Hu, Zhaohui Deng, Hao Zhang, Chunhua Liu
  • Patent number: 11335955
    Abstract: A non-aqueous electrolyte for a lithium ion secondary battery capable of improving rate characteristics, and the lithium ion secondary battery using the same. The non-aqueous electrolyte for the lithium ion secondary battery includes a carboxylic acid ester and 2.0×10?6 to 3.0×10?3 mol/L of halide ion other than fluoride ion.
    Type: Grant
    Filed: September 14, 2018
    Date of Patent: May 17, 2022
    Assignee: TDK CORPORATION
    Inventors: Tomohiko Hasegawa, Hirofumi Kakuta, Yusuke Kume
  • Patent number: 11335895
    Abstract: The present invention discloses a micro-capsule type silicon-carbon composite negative electrode material, and the negative electrode material comprises a current collector and a silicon-carbon coating layer formed by drying silicon-carbon paste coating the current collector; the silicon-carbon slurry comprises a carbonaceous paste and silicon capsule powder dispersed in the carbonaceous paste; the carbonaceous paste comprises a dispersing agent, and a carbon material, a first conductive agent and a first binder dispersed in the dispersing agent; the silicon capsule powder has micro-capsule structures comprising silicon powder and a second binder coating the surface of the silicon powder and in which the silicon powder is a core and the second binder is an outer shell; and the first binder is different from the second binder. The improved silicon-carbon composite negative electrode material of the present disclosure has excellent effects in cycle performance, coulombic efficiency and rate capability.
    Type: Grant
    Filed: September 18, 2018
    Date of Patent: May 17, 2022
    Assignee: JIANGSU DAOYING TECHNOLOGY CO., LTD.
    Inventors: Honghe Zheng, Siming Yang, Xueying Zheng, Xiaohui Zhang
  • Patent number: 11239462
    Abstract: A nonaqueous electrolyte battery according to one embodiment includes a negative electrode, a positive electrode and a nonaqueous electrolyte. The negative electrode includes a negative electrode active material-containing layer. The negative electrode active material-containing layer contains a negative electrode active material containing an orthorhombic Na-containing niobium titanium composite oxide. The positive electrode includes a positive electrode active material-containing layer. The positive electrode active material-containing layer contains a positive electrode active material. A mass C [g/m2] of the positive electrode active material per unit area of the positive electrode and a mass A [g/m2] of the negative electrode active material per unit area of the negative electrode satisfy the formula (1): 0.95?A/C?1.5.
    Type: Grant
    Filed: January 25, 2019
    Date of Patent: February 1, 2022
    Assignees: KABUSHIKI KAISHA TOSHIBA, Toshiba Infrastructure Systems & Solutions Corporation
    Inventors: Keigo Hoshina, Ryo Hara, Dai Yamamoto, Yasuhiro Harada, Norio Takami
  • Patent number: 11220443
    Abstract: Various embodiments relate to methods and systems for removing phosphorus and/or nitrogen from water. A method of removing phosphorus and nitrogen from water includes passing starting material water including nitrogen and phosphorus through an elevated pH phosphorus removal stage. The method includes passing the water through an electrolytic nitrogen removal stage. The method includes passing the water through a galvanic phosphorus removal stage. The water produced by the method has a lower phosphorus concentration and a lower nitrogen concentration than the starting material water.
    Type: Grant
    Filed: February 26, 2021
    Date of Patent: January 11, 2022
    Assignee: Phosphorus Free Water Solutions, LLC
    Inventors: Carlos Borras, Donald A. Luke
  • Patent number: 11196112
    Abstract: The present disclosure provides an insulation member having excellent mechanical properties having enough shock-absorbing effect in external shock and volume change in a battery and provides a cylindrical secondary battery including the insulation member. The insulation member according to the present disclosure has excellent mechanical properties in high temperature, is composed of polypropylene having narrow molecular weight, and has a fine pattern on the surface.
    Type: Grant
    Filed: January 25, 2018
    Date of Patent: December 7, 2021
    Inventors: Han Gab Song, Kyung Min Kim, Min Gyu Kim, Pil Kyu Park
  • Patent number: 11196086
    Abstract: The present application relates to a lithium ion battery, comprising: a positive electrode plate, a negative electrode plate, a separator disposed between the positive electrode plate and the negative electrode plate, and an electrolytic solution, the positive electrode plate including a positive electrode current collector and a positive electrode active material layer provided on at least one side of the positive electrode current collector, and the electrolytic solution including an organic solvent, a lithium salt and an additive, wherein the lithium salt comprises a primary lithium salt, the primary lithium salt is a first compound in an amount of 30% or more relative to the total molar amount of the lithium salt, and the first compound has a structure represented by the following formula I, and wherein the additive comprises a second compound represented by the following formula II.
    Type: Grant
    Filed: December 23, 2020
    Date of Patent: December 7, 2021
    Assignee: Contemporary Amperex Technology Co., Limited
    Inventors: Chengdu Liang, Cuiping Zhang, Ming Zhang, Peipei Chen, Hailin Zou, Liye Li
  • Patent number: 11171321
    Abstract: An electrode material having an electrode active material and a pyrolytic carbonaceous electron-conducting film that coats a surface of the electrode active material, in which an amount of a surface acid of the electrode material, which is determined by a back-titration method using tetrabutylammonium hydroxide, is 1 ?mol/m2 or more and 5 ?mol/m2 or less per surface area of the electrode material.
    Type: Grant
    Filed: February 22, 2019
    Date of Patent: November 9, 2021
    Assignee: SUMITOMO OSAKA CEMENT CO., LTD.
    Inventors: Kouji Oono, Takao Kitagawa, Tetsuya Nakabeppu
  • Patent number: 11165093
    Abstract: Provided is a rechargeable metal halide battery with an anode; an electrolyte including (i) an oxidizing gas, (ii) a metal halide, and (iii) a heterocyclic compound solvent; and a current collector contacting the active cathode material. As the metal halide of the electrolyte acts as an active cathode material that can receive, store, and release metal ions during charging and discharging of the battery, the battery does not require a dedicated cathode. The lack of a dedicated cathode results in a rechargeable battery with high power density that is lightweight and inexpensive to make.
    Type: Grant
    Filed: March 8, 2019
    Date of Patent: November 2, 2021
    Assignee: International Business Machines Corporation
    Inventors: Jangwoo Kim, Young-Hye Na, Gregory Breyta
  • Patent number: 11145901
    Abstract: The present application relates to an electrolyte and an electrochemical device. The electrolyte includes an organic solvent, an additive and a lithium salt, the additive including a cyclic borate and a nitrile compound. The electrolyte of the present application has good stability at a high working voltage. In another embodiment of the present application, the combination of the electrolyte and an anode having a high compacted density provides a high energy density for the electrochemical device, and improves the storage, floating charge and dynamicperformance of the electrochemical device.
    Type: Grant
    Filed: May 8, 2019
    Date of Patent: October 12, 2021
    Assignee: NINGDE AMPEREX TECHNOLOGY LIMITED
    Inventors: Juan Ma, Shuirong Zhang, Junfei Liu, Chao Tang
  • Patent number: 11114696
    Abstract: An electrolyte system for an electrochemical cell having an electrode comprising a chalcogen-containing electroactive material is provided, along with methods of making the electrolyte system. The electrolyte system includes one or more lithium salts dissolved in one or more solvents. The salts have a concentration in the electrolyte of greater than or equal to about 2M to less than or equal to about 5M. The electrochemical cell including the electrolyte system has a minimum potential greater than or equal to about 0.8 V to less than or equal to about 1.8 V and a maximum charge potential of greater than or equal to about 2.5 V to less than or equal to about 3 V.
    Type: Grant
    Filed: December 28, 2017
    Date of Patent: September 7, 2021
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Li Yang, Ning Kang, Mei Cai
  • Patent number: 11101496
    Abstract: Methods of making magnesium-based compositions are disclosed. The methods include the addition of a metallic magnesium powder to a magnesium salt, a metal halide and a solvent. The methods provide compositions with advantageous properties that make them useful as electrolytes for battery applications.
    Type: Grant
    Filed: July 11, 2018
    Date of Patent: August 24, 2021
    Assignee: Utah State University
    Inventors: Tianbiao Liu, Jian Luo
  • Patent number: 11101498
    Abstract: The present application relates to the technical field of lithium-ion batteries and, specifically, relates to an electrolyte and a lithium-ion battery containing the electrolyte. The electrolyte of the present application comprises a lithium salt, an organic solvent and additives that include additive A, additive B and at least one of additive C and additive D; in which, the additive A is a cyclic sultone; the additive B is a cyclic sulfate; the additive C is a silane phosphate compound and/or a silane borate compound; and the additive D is a fluoro-phosphate salt. The battery of the present application has low gas production at high temperature, high capacity retention rate and high power at low temperature as a function of synergistic effects of additives.
    Type: Grant
    Filed: April 12, 2017
    Date of Patent: August 24, 2021
    Assignee: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
    Inventor: Han Changlong
  • Patent number: 11075372
    Abstract: A main object of the present disclosure is to provide a novel active material whose volume variation due to charge/discharge is small. The present disclosure achieves the object by providing an active material having a composition represented by NaxMySi46, wherein M is a metal element other than Na, x and y satisfy 0<x, 0?y, y?x and 0<x+y<8, and comprising a crystal phase of a Type I silicon clathrate.
    Type: Grant
    Filed: July 5, 2019
    Date of Patent: July 27, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Jun Yoshida, Daichi Kosaka, Takamasa Otomo, Tetsuya Waseda, Hideyuki Nakano
  • Patent number: 11043661
    Abstract: A positive electrode active material contains a lithium composite oxyfluoride and an organosilicon compound binding to the lithium composite oxyfluoride. The organosilicon compound has insulation property.
    Type: Grant
    Filed: December 12, 2017
    Date of Patent: June 22, 2021
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Takayuki Ishikawa, Ryuichi Natsui, Kensuke Nakura
  • Patent number: 11031587
    Abstract: A negative electrode material for a lithium ion battery, including silicon-containing particles, artificial graphite particles and a carbonaceous material, wherein at least part of the silicon-containing particles, the artificial graphite particles and the carbonaceous material form composite particles; wherein the silicon-containing particles are silicon particles having a SiOx (0<x?2) layer on the particle surface, having an oxygen content of 1.0 mass % or more and 18.0 mass % or less, and mainly containing particles having a primary particle diameter of 200 nm or less; wherein the artificial graphite particles are non-flaky artificial graphite particles and have a 50% particle diameter in a volume-based cumulative particle size distribution, D50, of 1.0 ?m or more and 15.0 ?m or less. Also disclosed is a lithium-ion battery including a negative electrode using the negative electrode material.
    Type: Grant
    Filed: July 1, 2016
    Date of Patent: June 8, 2021
    Assignees: SHOWA DENKO K. K., UMICORE
    Inventors: Nobuaki Ishii, Arihiro Muto, Yasunari Otsuka, Masataka Takeuchi, Dirk Van Genechten, Stijn Put
  • Patent number: 11031629
    Abstract: Aspects of embodiments of the present disclosure provide an electrolyte for a rechargeable lithium battery, and a rechargeable lithium battery including the same. The electrolyte includes a non-aqueous organic solvent, a lithium salt, and additive represented by Chemical Formula 1: In Chemical Formula 1, X1 is CH or a nitrogen atom (N), and Ra is a substituted or unsubstituted alkyl group. The additive may decompose under reducing voltages on the surface of the negative electrode to thereby form a polysulfonate-based passivation film to suppress or reduce gas generation and battery swelling.
    Type: Grant
    Filed: April 2, 2019
    Date of Patent: June 8, 2021
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Hyejin Park, Jungjin Moon, Myungheui Woo, Harim Lee, Jin-Hyeok Lim, Seonghun Jeong, Wonseok Cho, Hyunbong Choi
  • Patent number: 11018340
    Abstract: A negative electrode for a rechargeable lithium battery includes a negative active material layer including a negative active material, and a current collector supporting the negative active material layer. The negative active material may include first spherical crystalline carbon, the first spherical crystalline carbon including secondary particles in which primary particles of crystalline carbon are assembled, the first spherical crystalline carbon having a coating of crystalline carbon, second spherical crystalline carbon, the second spherical crystalline carbon including secondary particles in which primary particles of crystalline carbon are assembled, the second spherical crystalline carbon having a coating of amorphous carbon, and flake-shaped graphite.
    Type: Grant
    Filed: April 22, 2019
    Date of Patent: May 25, 2021
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Yoonsoo Park, Taesik Kim, Jae-Hyeon Eom
  • Patent number: 10998580
    Abstract: An electrolyte for a rechargeable lithium battery and a rechargeable lithium battery including the electrolyte, the electrolyte including a non-aqueous organic solvent; a lithium salt; and an additive, wherein the additive includes a compound represented by Chemical Formula 1: wherein, in Chemical Formula 1, R is a substituted or unsubstituted C1 to C10 alkyl group, a substituted or unsubstituted C1 to C10 alkoxy group, a substituted or unsubstituted C2 to C10 alkenyl group, a substituted or unsubstituted C2 to C10 alkynyl group, a substituted or unsubstituted C3 to C10 cycloalkyl group, a substituted or unsubstituted C3 to C10 cycloalkenyl group, or a substituted or unsubstituted C6 to C20 aryl group, and n is an integer of 1 to 3.
    Type: Grant
    Filed: March 29, 2019
    Date of Patent: May 4, 2021
    Assignee: SAMSUNG SDI CO., LTD.
    Inventors: Olga Tsay, Pavel Shatunov, Hyejin Park, Myungheui Woo, Harim Lee, Jin-Hyeok Lim, Hyunbong Choi
  • Patent number: 10957898
    Abstract: Electrolytes and electrolyte additives for energy storage devices comprising an anhydride compound 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, and at least one electrolyte additive selected from an anhydride compound.
    Type: Grant
    Filed: December 21, 2018
    Date of Patent: March 23, 2021
    Assignee: Enevate Corporation
    Inventors: Liwen Ji, Benjamin Yong Park
  • Patent number: 10923706
    Abstract: In manufacturing a storage battery electrode, a method for manufacturing a storage battery electrode with high capacity and stability is provided. As a method for preventing a mixture for forming an active material layer from becoming strongly basic, a first aqueous solution is formed by mixing an active material exhibiting basicity with an aqueous solution exhibiting acidity and including an oxidized derivative of a first conductive additive; a first mixture is formed by reducing the oxidized derivative of the first conductive additive by drying the first aqueous solution; a second mixture is formed by mixing a second conductive additive and a binder; a third mixture is formed by mixing the first mixture and the second mixture; and a current collector is coated with the third mixture. The strong basicity of the mixture for forming an active material layer is lowered; thus, the binder can be prevented from becoming gelled.
    Type: Grant
    Filed: July 25, 2019
    Date of Patent: February 16, 2021
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Takahiro Kawakami, Yohei Momma, Teruaki Ochiai, Tatsuya Ikenuma
  • Patent number: 10892110
    Abstract: An electrolyte solution for electrochemical device contains: an electrolyte solution comprising a cyclic carbonate solvent containing 1.0 mol/L to 1.6 mol/L of LiPF6 as an electrolyte; an oxalate complex salt of lithium whose additive quantity relative to the electrolyte solution accounts for 1.0 percent by weight to 3.0 percent by weight; and a straight-chain carbonate whose additive quantity relative to the electrolyte solution accounts for 1.0 percent by weight to 9.0 percent by weight.
    Type: Grant
    Filed: September 21, 2018
    Date of Patent: January 12, 2021
    Assignee: TAIYO YUDEN CO., LTD.
    Inventor: Takeo Tsuzuki
  • Patent number: 10868294
    Abstract: A positive electrode for a lithium secondary battery includes a positive electrode current collector, a positive electrode active material layer, and a primer layer formed between the positive electrode current collector and the positive electrode active material layer. The primer layer includes lithium carbonate (Li2CO3) particles having two or more different particle diameters, a binder polymer, and a conductive material. The lithium secondary battery attains the overcharge cutoff voltage rapidly by virtue of the gas generated between the positive electrode current collector and the positive electrode active material layer, in an overcharged state. Thus, it is possible to ensure the safety of the lithium secondary battery.
    Type: Grant
    Filed: July 26, 2018
    Date of Patent: December 15, 2020
    Assignee: LG Chem, Ltd.
    Inventors: Kyung-Min Kim, Jung-Seok Choi, Song-Taek Oh
  • Patent number: 10868334
    Abstract: This application provides an electrolyte and an electrochemical device, in which the electrolyte comprises an additive A and an additive B, wherein the additive A is present in an amount of 0.001% to 10% by mass in the electrolyte and the additive B is present in an amount of 0.1% to 10% by mass in the electrolyte and the electrolyte has a conductivity of 4 mS/cm to 12 mS/cm at 25° C. The present invention can improve the cycle performance and storage performance of the electrochemical device, in particular, improve the cycle performance and storage performance of the electrochemical device under high temperature and high voltage conditions while keeping the low temperature performance.
    Type: Grant
    Filed: March 15, 2019
    Date of Patent: December 15, 2020
    Assignee: Contemporary Amperex Technology Co., Limited
    Inventors: Tiancheng Yi, Chunhua Hu, Zijun Xu, Lu Miao, Chengdu Liang
  • Patent number: 10847782
    Abstract: Powder comprising particles comprising a matrix material and silicon-based domains dispersed in this matrix material, whereby either part of the silicon-based domains are present in the form of agglomerates of silicon-based domains whereby at least 98% of these agglomerates have a maximum size of 3 ?m or less, or the silicon-based domains are not at all agglomerated into agglomerates.
    Type: Grant
    Filed: October 15, 2015
    Date of Patent: November 24, 2020
    Assignee: Umicore
    Inventors: Stijn Put, Dirk Van Genechten, Jan Gilleir, Nicolas Marx
  • Patent number: 10847806
    Abstract: An electrochemical device including a positive electrode current collector; a first protruding portion including a plurality of positive electrodes in electrical contact with the positive electrode current collector, and a first dented portion disposed between each positive electrode of the plurality of positive electrodes; an electrolyte layer including a second protruding portion and a second dented portion respectively disposed on the first protruding portion including the plurality of positive electrodes and the first dented portion disposed between each positive electrode of the plurality of positive electrodes; and a negative electrode current collector layer including a third protruding portion and a third dented portion respectively disposed on the second protruding portion and the second dented portion of the electrolyte layer.
    Type: Grant
    Filed: November 6, 2017
    Date of Patent: November 24, 2020
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Hojung Yang, Kyounghwan Kim, Hwiyeol Park, Jin S. Heo, Sungjin Lim, Huisu Jeong
  • Patent number: 10826111
    Abstract: This disclosure relates to semi-solid electrodes which are pre-formed prior to inclusion in lithium ion batteries, lithium ion batteries which incorporate the semi-solid electrodes and methods of making the semi-solid electrodes. An electrochemical cell includes a semi-solid anode formed of anode active material injected with an electrolyte and a first electrolyte additive, the semi-solid anode having a first SEI layer; and a semi-solid cathode formed of a cathode active material injected with an additional electrolyte and a second electrolyte additive, the semi-solid cathode having a second SEI layer, wherein the first electrolyte additive and the second solid electrolyte additive are different.
    Type: Grant
    Filed: April 24, 2018
    Date of Patent: November 3, 2020
    Assignee: Gotion, Inc.
    Inventors: Qian Cheng, Steven Cai
  • Patent number: 10811723
    Abstract: A secondary battery is provided. The secondary battery includes a positive electrode, a negative electrode, and an electrolyte layer, and the electrolyte layer includes an electrolytic solution and a copolymer containing vinylidene fluoride, hexafluoropropylene, and a hetero-unsaturated compound.
    Type: Grant
    Filed: June 5, 2018
    Date of Patent: October 20, 2020
    Assignee: Murata Manufacturing Inc.
    Inventors: Kazumasa Takeshi, Aiko Nakamura, Shuhei Sugita, Hiroki Mita, Tadahiko Kubota
  • Patent number: 10790536
    Abstract: Described are electrolyte compositions and electrochemical devices containing the electrolyte compositions. The compositions include an organosilicon compound, an imide salt and optionally LiPF6. The electrolytes provide improved high-temperature performance and stability and will operate at temperatures as high as 250° C.
    Type: Grant
    Filed: September 18, 2017
    Date of Patent: September 29, 2020
    Assignee: Silatronix, Inc.
    Inventors: Tobias Johnson, Michael Pollina, Liu Zhou, Monica Usrey, Deborah Gilbert, Peng Du
  • Patent number: 10775240
    Abstract: Provided is a method for evaluating a secondary battery active material, comprising: preparing an active material including a core and a shell located on the surface of the core; forming an active material layer including the active material on at least one surface of a current collector; acquiring a Raman spectrum for the active material and calculating a Raman R value (ID/IG) therefrom; obtaining a frequency distribution chart for the Raman R value; obtaining a probability density function by normalizing the frequency distribution chart; and evaluating the shell of the active material by extracting a Raman R value (ID/IG) and/or a predetermined width indicating a maximum value from the graph of the probability density function.
    Type: Grant
    Filed: March 27, 2017
    Date of Patent: September 15, 2020
    Assignee: SK Innovation Co., Ltd.
    Inventors: Suk-Chin Lee, Hyo-Sang Kim, Jung-Hyun Yun
  • Patent number: 10717650
    Abstract: Disclosed is a method for purifying a difluorophosphate, the method including mixing a difluorophosphate containing an impurity with at least one treatment agent selected from the group consisting of carbonates, hydroxides, and halides of alkali metals or alkali earth metals and amines to isolate the impurity. It is preferable that the method further include filtering off, by filtration, a salt or a complex that has been formed by allowing the impurity to be mixed with the treatment agent. Preferably, a carbonate, a hydroxide, or a halide of an alkali metal is used as the treatment agent, and more preferably a carbonate, a hydroxide, or a halide of lithium is used as the treatment agent.
    Type: Grant
    Filed: April 26, 2016
    Date of Patent: July 21, 2020
    Assignee: KANTO DENKA KOGYO CO., LTD.
    Inventors: Hiroki Takizawa, Kazuhide Yoshiyama, Keisuke Kude, Wataru Kashikura, Takuro Abe, Mitsuhara Shimoda, Osamu Omae, Hiroyuki Uehara
  • Patent number: 10686220
    Abstract: Electrolyte compositions comprising fluorinated acyclic carboxylic acid esters, fluorinated acyclic carbonates, and/or fluorinated acyclic ethers; co-solvents; and certain film-forming chemical compounds are described. The electrolyte compositions are useful in electrochemical cells, such as lithium ion batteries where they provide the improved performance of a combination of high capacity and high cycle life.
    Type: Grant
    Filed: April 4, 2014
    Date of Patent: June 16, 2020
    Assignee: Solvay SA
    Inventors: Stephen E. Burkhardt, Xudong Chen, Charles J. Dubois, William L. Holstein, Kostantinos Kourtakis, Mark Gerrit Roelofs
  • Patent number: 10686222
    Abstract: A method for manufacturing a phosphate, which includes reacting, in a solvent, an organophosphate represented by the following formula (2) and an alkali metal hydroxide in an amount of 1.01 mole equivalents or more relative to the organophosphate to provide a composition containing a phosphate represented by the following formula (1), the alkali metal hydroxide, and the solvent; and adding hydrogen fluoride to the composition to neutralize the composition and to precipitate an alkali metal fluoride, thereby providing a composition containing the precipitated alkali metal fluoride, the phosphate represented by the formula (1), and the solvent. The formula (1) is (R11O)(R12O)PO2M, where R11, R12 and M are as defined herein. The formula (2) is (R21O)(R22O)(R23O)PO, where R21, R22, and R23 are as defined herein.
    Type: Grant
    Filed: November 12, 2018
    Date of Patent: June 16, 2020
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Atsushi Maruo, Shigeaki Yamazaki, Hideo Sakata, Shinichi Kinoshita
  • Patent number: 10665898
    Abstract: The present disclosure provides an electrolyte liquid of a lithium sulfur battery comprising a carbonate ester organic solvent, a lithium salt, and a flame-retardant cosolvent, the flame-retardant cosolvent being a phosphazene compound, wherein a mass percentage of the flame-retardant cosolvent is 20% to 50%, a concentration of the lithium salt is 0.8 mol/L to 1.2 mol/L. The present disclosure also provides a lithium sulfur battery and a method for preparing the electrolyte liquid.
    Type: Grant
    Filed: September 9, 2016
    Date of Patent: May 26, 2020
    Assignee: TSINGHUA UNIVERSITY
    Inventors: Zhen Liu, Yu-Ming Shang, Xiang-Ming He, Li Wang
  • Patent number: 10622638
    Abstract: An electrode for redox flow battery is disposed opposite a membrane of a redox flow battery. The electrode includes a fiber assembly including a plurality of carbon fibers. The fiber assembly includes soft carbon fibers with a Young's modulus of 200 GPa or less. An average carbon fiber diameter of the soft carbon fibers is preferably 20 ?m or less.
    Type: Grant
    Filed: October 3, 2016
    Date of Patent: April 14, 2020
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Kei Hanafusa, Kenichi Ito, Takashi Kanno, Souichirou Okumura
  • Patent number: 10586988
    Abstract: In an electrode structural body, a coated film is obtained by applying an electrode mixture including an electrode active material, a first fluorine based polymer, and a solvent and drying the mixture, then formed on the surface of a current collector, the first fluorine based polymer has one or more side chains represented by the following Formula (1), and the coated film is subjected to heat treatment. —X—COOH??(1) (In Formula (1), X is an atomic group having a molecular weight of less than 500, the main chain of which is made up of 1 to 20 atoms).
    Type: Grant
    Filed: April 13, 2016
    Date of Patent: March 10, 2020
    Assignee: KUREHA CORPORATION
    Inventors: Yuki Sakai, Emi Sugawara
  • Patent number: 10553910
    Abstract: A method of performing a formation process for a lithium-ion cell having an anode, a cathode, an electrolyte and a separator, the formation process including adding an additive to the electrolyte for improving a solid electrolyte interface build-up on the anode, performing a first charge of the cell at a first predetermined rate, performing a cycle of discharging/charging the cell at the first predetermined rate, repeating the cycle until a cycle maximum dQ/dV peak value is smaller than or equal to a predetermined dQ/dV value during charging of the cell and charging the cell to a fully charged capacity at a second predetermine rate, the second predetermined rate being greater than the first predetermined rate.
    Type: Grant
    Filed: March 25, 2016
    Date of Patent: February 4, 2020
    Assignees: TOYOTA MOTOR EUROPE, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Takahiro Sakurai, Tomohide Sumi, Yoshio Matsuyama
  • Patent number: 10530013
    Abstract: A method of manufacturing a non-aqueous electrolyte secondary battery includes: (A) constructing an electrode group including a positive electrode and a negative electrode; (B) impregnating the electrode group with a first electrolyte solution; (C) charging the electrode group impregnated with the first electrolyte solution to a voltage of 4.3 V or more; and (E) manufacturing the non-aqueous electrolyte secondary battery by impregnating the electrode group with a second electrolyte solution after the charging. The first electrolyte solution includes a first solvent, a first lithium salt, and biphenyl. The first solvent does not include 1,2-dimethoxyethane. The second electrolyte solution includes a second solvent and a second lithium salt. The second solvent includes 1,2-dimethoxyethane.
    Type: Grant
    Filed: October 4, 2017
    Date of Patent: January 7, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hiroki Iguchi, Hideaki Fujita
  • Patent number: 10454137
    Abstract: Provided are a non-aqueous electrolyte solution, which includes (i) a first lithium salt, (ii) lithium bis(fluorosulfonyl)imide as a second lithium salt, (iii) a phosphazene-based compound as a first additive, and (iv) a non-aqueous organic solvent, and a lithium secondary battery including the non-aqueous electrolyte solution. With respect to a lithium secondary battery including the non-aqueous electrolyte solution of the present invention, since a robust solid electrolyte interface (SEI) may be formed on the surface of a negative electrode during initial charge and flame retardancy in a high-temperature environment may be provided to prevent the decomposition of the surface of a positive electrode and an oxidation reaction of the electrolyte solution, output characteristics and capacity characteristics after high-temperature storage as well as output characteristics may be improved.
    Type: Grant
    Filed: September 24, 2015
    Date of Patent: October 22, 2019
    Assignee: LG Chem, Ltd.
    Inventors: Young Min Lim, Chul Haeng Lee
  • Patent number: 10411302
    Abstract: A lithium secondary battery includes: a negative electrode, a positive electrode, and an electrolyte disposed between the negative electrode and the positive electrode, wherein the negative electrode includes a silicon composite including silicon, a silicon oxide of the formula SiOx wherein 0<x<2 and disposed on the silicon, and a graphene disposed on the silicon oxide; or a carbonaceous composite including the silicon composite and a carbonaceous material, which is different from the graphene, and wherein at least one of the negative electrode and the electrolyte includes an ionic liquid containing a fluorosulfonyl imide anion, and a lithium salt.
    Type: Grant
    Filed: October 14, 2016
    Date of Patent: September 10, 2019
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jonghwan Park, Junhyuk Moon, Inhyuk Son, Jaeman Choi
  • Patent number: 10396399
    Abstract: An electrolyte solution capable of providing electrochemical devices whose internal resistance is less likely to increase even after repeated charge and discharge and whose cycle capacity retention ratio is high. The electrolyte solution contains a solvent, an electrolyte salt, and a phosphate in an amount of 0.001 to 15 mass % relative to the solvent and represented by the formula (1): (R11O)(R12O)PO2M, where R11, R12 and M are as defined herein.
    Type: Grant
    Filed: July 7, 2015
    Date of Patent: August 27, 2019
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Atsushi Maruo, Shigeaki Yamazaki, Hideo Sakata, Shinichi Kinoshita
  • Patent number: 10381685
    Abstract: The present disclosure provides a non-aqueous liquid electrolyte comprising a non-aqueous organic solvent, a lithium salt, and an additive that is an isocyanate-based compound comprising a carbon-carbon triple bond. By comprising the isocyanate-based compound additive comprising a carbon-carbon triple bond of the present disclosure in the non-aqueous liquid electrolyte, lifespan properties and high temperature durability are capable of being enhanced, and internal resistance of a battery is capable of being reduced.
    Type: Grant
    Filed: October 1, 2015
    Date of Patent: August 13, 2019
    Assignee: LG Chem, Ltd.
    Inventors: Kyoung Ho Ahn, Sol Ji Park, Chul Haeng Lee, Jeong Woo Oh
  • Patent number: 10355312
    Abstract: The present invention provides an electrolyte solution that is capable of dealing with an increased voltage of an electrochemical device, as well as capable of improving the high-temperature storage characteristics and cycle characteristics of the electrochemical device, and an electrochemical device. The electrolyte solution includes a solvent containing a fluorinated saturated cyclic carbonate and a fluorinated acyclic carbonate; at least one sulfur-containing compound selected from the group consisting of compounds having a —SO2— bond, compounds having a —SO3— bond, and compounds having a —SO4— bond, and an electrolyte salt. The fluorinated acyclic carbonate has a fluorine content of 31.0 to 70.0 mass %.
    Type: Grant
    Filed: March 24, 2015
    Date of Patent: July 16, 2019
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Hiroyuki Arima, Hideo Sakata, Shigeaki Yamazaki, Shinichi Kinoshita
  • Patent number: 10340522
    Abstract: A binder composition for a lithium secondary battery, an electrode, and a lithium secondary battery, the binder composition including an interpenetrating network structure that includes a cyclic polymer, the cyclic polymer including a repeating unit represented by Formula 1 or a repeating unit represented by Formula 2; and a copolymer, the copolymer including a repeating unit represented by Formula 3 and a repeating unit represented by Formula 4, wherein an amount of the repeating unit represented by Formula 3 is about 40 mol % to about 70 mol %, based on a total amount of the copolymer:
    Type: Grant
    Filed: July 13, 2017
    Date of Patent: July 2, 2019
    Assignees: SAMSUNG SDI CO., LTD., Aekyung Chemical Co., Ltd.
    Inventors: Soonsung Suh, Seunguk Kwon, Jaehyuk Kim, Namseon Kim, Soojung Kim, Kwangshik Choi
  • Patent number: 10340497
    Abstract: A secondary battery comprises a cell. The cell includes a positive electrode plate having a positive current collector and a negative electrode plate having a negative current collector. The secondary battery further includes: a first positive electrode tab and a second positive electrode tab, one end of the first positive electrode tab is fixed on and electrically connects with the positive current collector, the other end of the first positive electrode tab extends to the outside of the cell; and/or, a first negative electrode tab and a second negative electrode tab, one end of the first negative electrode tab is fixed on and electrically connects with the negative current collector, the other end of the first negative electrode tab extends to the outside of the cell, one end of the second negative electrode tab is fixed on and electrically connects with the other end of the first negative electrode tab.
    Type: Grant
    Filed: January 6, 2017
    Date of Patent: July 2, 2019
    Assignee: NINGDE AMPEREX TECHNOLOGY LIMITED
    Inventors: Baojian Zhu, Hong Yang, Qiao Zeng, Jiacai Cai, Shoujiang Xu
  • Patent number: 10276871
    Abstract: A rechargeable lithium battery includes a negative electrode including a negative active material including a silicon-based material and a carbon-based material; and an electrolyte solution, wherein the negative electrode further includes greater than or equal to about 0.01 parts by weight and less than or equal to about 1 part by weight of a compound represented by Chemical Formula 1, based on 100 parts by weight of the negative active material, and at least one, selected from the electrolyte solution and the negative electrode, includes greater than or equal to about 0.
    Type: Grant
    Filed: December 7, 2015
    Date of Patent: April 30, 2019
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Hokuto Yokotsuji, Hironari Takase
  • Patent number: 10263287
    Abstract: Provided are a nonaqueous electrolytic solution having an electrolyte salt dissolved in a nonaqueous solvent, the electrolyte salt including at least one first lithium salt selected from LiPF6, LiBF4, LiN(SO2F)2, LiN(SO2CF3)2, and LiN(SO2C2F5)2, and at least one second lithium salt selected from a lithium salt having an oxalate structure, a lithium salt having a phosphate structure, and a lithium salt having an S?O group, with a sum total of the first lithium salt and the second lithium salt being four or more, and an energy storage device using the same. This nonaqueous electrolytic solution is not only able to improve electrochemical characteristics at a high temperature and much more improve a discharge capacity retention rate and low-temperature output characteristics after a high-temperature storage test but also able to improve low-temperature input characteristics even for high-density electrodes.
    Type: Grant
    Filed: July 13, 2015
    Date of Patent: April 16, 2019
    Assignee: UBE INDUSTRIES, LTD.
    Inventors: Koji Abe, Kei Shimamoto
  • Patent number: 10247783
    Abstract: Systems and methods for sensing internal states of vehicle batteries are described. From this internal state information, various physical characteristics of the battery can be measured, calculated or inferred. A vehicle can include an electric motor, a battery to store electrical energy for the electric motor, and a sensor connected to the battery to sense a battery state, to receive an input signal, and to wirelessly transmit an output signal indicating the battery state. The vehicle can also include control circuitry to receive the output signal and to control the electric motor and the battery. In examples, the battery may have a physical property that changes based on a state of the battery. This physical property may be measured by the sensor. The sensor may be passive and built into the structure of the battery. The sensor can be a magnetic field sensor or a surface wave acoustic sensor.
    Type: Grant
    Filed: September 23, 2014
    Date of Patent: April 2, 2019
    Assignee: Ford Global Technologies, LLC
    Inventor: Arnold Kweku Mensah-Brown
  • Patent number: 10190225
    Abstract: The present disclosure relates to a copper foil that exhibits surprising low repulsive force characteristics; and to methods for manufacturing such copper foils. Typically, the copper foil has (a) a lightness L* value of the nodule untreated side, based on the L*a*b color system, in the range of 75 to 90 and (b) a normal tensile strength in the range of 40 kgf/mm2 to 55 kgf/mm2. The disclosure further relates to flexible printed circuit boards and electronic devices using the above-mentioned copper foils for forming conductive lines therein.
    Type: Grant
    Filed: April 18, 2017
    Date of Patent: January 29, 2019
    Assignee: CHANG CHUN PETROCHEMICAL CO., LTD.
    Inventors: Yao-Sheng Lai, Kuei-Seng Cheng, Jian-Ming Huang
  • Patent number: 10164272
    Abstract: A pinhole determination method for a fuel cell includes steps of blocking air supply to a fuel cell stack by a controller; measuring a cell voltage value of each of unit fuel cells of the fuel cell stack; and determining whether or not a pinhole is present by comparing the cell voltage value with an average cell voltage value.
    Type: Grant
    Filed: August 8, 2016
    Date of Patent: December 25, 2018
    Assignee: Hyundai Motor Company
    Inventors: Jung Hwan Ryu, Soon Woo Kwon