Carbon, Graphite, Or Carbonaceous Component Is Active Material Patents (Class 429/231.8)
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Patent number: 10601047Abstract: A battery cell includes a cathode layer and an anode layer. The anode layer includes anode particles, and a plurality of the anode particles have non-spanning cracks induced in the anode particles from cyclic tension applied to the anode layer prior to the anode layer being combined with the cathode layer in the battery cell. The battery cell also includes a case, where the cathode layer and the anode layer are housed within the case.Type: GrantFiled: April 2, 2019Date of Patent: March 24, 2020Assignees: Chongqing Jinkang New Energy Automobile Co., Ltd., SF Motors Inc.Inventors: Scott Monismith, Brennan Campbell, Ying Liu, Yifan Tang
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Patent number: 10601044Abstract: A negative electrode material for a lithium-ion secondary battery, in which the negative electrode material includes a composite particle including a spherical graphite particle and plural graphite particles that have a compressed shape and that aggregate or are combined so as to have nonparallel orientation planes, and the negative electrode material has an R-value in a Raman measurement of from 0.03 to 0.10, and has a pore volume as obtained by mercury porosimetry of from 0.2 mL/g to 1.0 mL/g in a pore diameter range of from 0.1 ?m to 8 ?m.Type: GrantFiled: October 22, 2018Date of Patent: March 24, 2020Assignee: HITACHI CHEMICAL COMPANY, LTD.Inventors: Hideyuki Tsuchiya, Takashi Sakamoto, Takeshi Masayoshi
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Patent number: 10593930Abstract: Disclosed is an electrode active material for a lithium secondary battery including a first material including a carbon material, a second material of a nanostructure formed on the first material, the second material including at least one selected from a metal and a metalloid capable of reversibly alloying with lithium, and a third material present on a surface of at least one of the first material and the second material to control a side reaction with an electrolyte solution, an electrode including the electrode active material, and a lithium secondary battery having the electrode.Type: GrantFiled: June 20, 2014Date of Patent: March 17, 2020Assignee: LG Chem, Ltd.Inventors: Yong-Ju Lee, Je-Young Kim, Mi-Rim Lee, Byung-Hun Oh, Seung-Youn Choi
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Patent number: 10593951Abstract: Disclosed are a cathode for metal-sulfur batteries which includes a cathode active material layer, which contains nitrogen-doped carbon, and a protective layer and a method of manufacturing the same. The cathode for lithium-sulfur batteries according to the present invention includes a cathode active material layer including a sulfur-containing material, a binder, and a nitrogen-doped carbon material; and a protective layer that is disposed on the cathode active material layer and is composed of a nitrogen-doped carbon material, wherein the nitrogen-doped carbon material of the cathode active material layer has a form wherein spherical particles and linear structures are mixed and the nitrogen-doped carbon material of the protective layer has a linear structure.Type: GrantFiled: June 9, 2017Date of Patent: March 17, 2020Assignee: IUCF-HYU (INDUSTRY—UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY)Inventors: Yang-Kook Sun, Heemin Kim
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Patent number: 10586982Abstract: Provided is an alkali metal-sulfur cell comprises: (A) an anode comprising (i) an anode active material layer composed of fine particles of a first anode active material, an optional conductive additive, and an optional binder and, prior to assembly of the cell, (ii) a layer of an alkali metal or alkali metal alloy having greater than 50% by weight of lithium, sodium, or potassium therein, wherein the layer of alkali metal or alkali metal alloy is in physical contact with the anode active material layer; (B) a cathode active material layer and an optional cathode current collector, wherein the cathode active material layer contains multiple particulates of a sulfur-containing material selected from a sulfur-carbon hybrid, sulfur-graphite hybrid, sulfur-graphene hybrid, conducting polymer-sulfur hybrid, metal sulfide, sulfur compound, or a combination thereof; and (C) an electrolyte in ionic contact with the anode active material layer and the cathode active material layer.Type: GrantFiled: August 1, 2017Date of Patent: March 10, 2020Assignee: Global Graphene Group, Inc.Inventors: Aruna Zhamu, Bor Z. Jang
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Patent number: 10573896Abstract: Provided is conductive carbon that gives an electrical storage device having a high energy density. This conductive carbon includes a hydrophilic part, and the contained amount of the hydrophilic part is 10 mass % or more of the entire conductive carbon. When performing a rolling treatment on an active material layer including an active material particle and this conductive carbon formed on a current collector during manufacture of an electrode of an electric storage device, the pressure resulting from the rolling treatment causes this conductive carbon to spread in a paste-like form and increase in density. The active material particles approach each other, and the conductive carbon is pressed into gaps formed between adjacent active material particles, filling the gaps. As a result, the amount of active material per unit volume in the electrode obtained after the rolling treatment increases, and the electrode density increases.Type: GrantFiled: March 5, 2015Date of Patent: February 25, 2020Assignee: NIPPON CHEMI-CON CORPORATIONInventors: Satoshi Kubota, Yoshihiro Minato, Shuichi Ishimoto, Kenji Tamamitsu, Katsuhiko Naoi, Wako Naoi
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Patent number: 10570016Abstract: The present invention relates to carbon nanotubes that are excellent in dispersibility and a process for producing the carbon nanotubes. The carbon nanotubes according to the present invention each comprise a wall that comprises a parallel portion and a narrowed portion having a tube outer diameter that is not more than 90% of a tube outer diameter of the parallel portion. Thus, the carbon nanotubes are readily dispersible owing to a high abundance ratio of easily-breaking portions.Type: GrantFiled: November 12, 2015Date of Patent: February 25, 2020Assignee: TODA KOGYO CORP.Inventors: Wataru Oda, Kazushige Kawai, Tomohiro Honda, Seiji Okazaki, Norimichi Nagai, Tetsuro Toda
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Patent number: 10535876Abstract: The present invention provides an anode material for a lithium-ion battery comprising a carbon particle having a particle size of 5 ?m to 30 ?m, and including defective portions on a surface of the carbon particle, the defective portions being grooves formed by cathodically exfoliating graphene layers from the carbon particle.Type: GrantFiled: August 29, 2014Date of Patent: January 14, 2020Assignee: NEC CorporationInventors: Qian Cheng, Noriyuki Tamura
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Patent number: 10532511Abstract: In an aspect, infilling includes one or more the following characteristics: (i) adjacent rows and columns, which may be overlapping or non-overlapping; (ii) no sharp angle turns, i.e., no turns of ninety degree or less; and (iii) intersecting between infill patterns occurs from layer to layer (i.e., at offset z-axis positions). An infilling technique may also or instead include rotating the infill pattern about ninety degrees in some alternating fashion from layer to layer.Type: GrantFiled: May 27, 2016Date of Patent: January 14, 2020Assignee: MakerBot Industries, LLCInventor: Andrey V. Patrov
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Patent number: 10535899Abstract: To provide a power storage device whose charge and discharge characteristics are unlikely to be degraded by heat treatment. To provide a power storage device that is highly safe against heat treatment. The power storage device includes a positive electrode, a negative electrode, a separator, an electrolytic solution, and an exterior body. The separator is located between the positive electrode and the negative electrode. The separator contains polyphenylene sulfide or solvent-spun regenerated cellulosic fiber. The electrolytic solution contains a solute and two or more kinds of solvents. The solute contains LiBETA. One of the solvents is propylene carbonate.Type: GrantFiled: December 7, 2016Date of Patent: January 14, 2020Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Kazuhei Narita, Ryota Tajima, Teppei Oguni
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Patent number: 10535873Abstract: The present invention provides a positive electrode active material for a secondary battery and a secondary battery including the same, which includes a core; a shell located to surround the core; and a buffer layer located between the core and the shell, and including a three-dimensional network structure connecting the core and the shell and a pore. The decomposition of the active material may be minimized by a rolling process in the manufacture of an electrode by controlling the specific surface area, average particle diameter and porosity of the active material particles as well as the specific structure, the reactivity with an electrolyte solution may be maximized, and the output and lifespan characteristics of the secondary battery may be improved since the particles forming the shell have crystal structure with orientation which facilitates intercalation and deintercalation of lithium ions.Type: GrantFiled: March 3, 2017Date of Patent: January 14, 2020Assignee: LG Chem, Ltd.Inventors: Sang Wook Lee, Wang Mo Jung, Byung Chun Park, Ju Kyung Shin, Sang Min Park, Min Suk Kang
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Patent number: 10522833Abstract: An LFP electrode material is provided which has improved impedance, power during cold cranking, rate capacity retention, charge transfer resistance over the current LFP based cathode materials. The electrode material comprises crystalline primary particles and secondary particles, where the primary particle is formed from a plate-shaped single-phase spheniscidite precursor and a lithium source. The LFP includes an LFP phase behavior where the LFP phase behavior includes an extended solid-solution range.Type: GrantFiled: April 24, 2017Date of Patent: December 31, 2019Assignee: A123 Systems, LLCInventors: Larry Beck, Jennifer Wilson, Chuanjing Xu, Zhong-You Shi, Maha Hammoud
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Patent number: 10522817Abstract: A positive electrode material includes: Li2Ni?M1?M2?Mn?O4-?. ? satisfies a relational expression of 0.50<??1.33. ? satisfies a relational expression of 0.33???1.1. ? satisfies a relational expression of 0???1.00. ? satisfies a relational expression of 0??<0.67. ? satisfies a relational expression of 0???1.00. M1 is at least one type selected from Co and Ga. M2 is at least one type selected from Ge, Sn, and Sb. Li2Ni?M1?M2?Mn?O4-? has a layered structure which includes a Li layer and a Ni layer. A crystal structure of Li2Ni?M1?M2?Mn?O4-? is a superlattice structure.Type: GrantFiled: March 10, 2016Date of Patent: December 31, 2019Assignee: DENSO CORPORATIONInventors: Yuki Tachibana, Yoshinori Satou, Nobuo Yamamoto, Shigeki Komine, Yuta Shimonishi
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Patent number: 10508335Abstract: The disclosure relates to a process for preparing particulate materials having high electrochemical capacities that are suitable for use as anode active materials in rechargeable metal-ion batteries. In one aspect, the disclosure provides a process for preparing a particulate material comprising a plurality of composite particles. The process includes providing particulate porous carbon frameworks comprising micropores and/or mesopores, wherein the porous carbon frameworks have a D50 particle diameter of at least 50 ?m; depositing an electroactive material selected from silicon and alloys thereof into the micropores and/or mesopores of the porous carbon frameworks using a chemical vapor infiltration process in a fluidized bed reactor, to provide intermediate particles; and comminuting the intermediate particles to provide said composite particles.Type: GrantFiled: February 13, 2019Date of Patent: December 17, 2019Assignee: Nexeon LimitedInventors: Sefa Yilmaz, Charles Mason, Richard Taylor, David Bent
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Patent number: 10505192Abstract: A lithium metal composite oxide includes a primary particle having a hexagonal crystal structure, and a primary particle having a cubic crystal structure.Type: GrantFiled: August 1, 2017Date of Patent: December 10, 2019Assignees: IUCF-HYU (INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY), ENERCERAMIC INC.Inventors: Yangkook Sun, Chongseung Yoon, Gangjun Park, Jangwook Park
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Patent number: 10493408Abstract: The two-dimensional metal carbide desalination membrane includes a stack of two-dimensional metal carbide layers. A two-dimensional metal carbide included in the two-dimensional metal carbide layers may have the formula Ti3C2Tx, where T represents a terminating functional group, and x represents a number of the terminating functional groups. The terminating group may be oxygen, hydroxide (OH), fluorine or combinations thereof. The two-dimensional metal carbide desalination membrane includes nano-channels which are selectively permeable to ions. The two-dimensional metal carbide desalination membrane is selectivity permeable to a number of different cations, including Li+, Na+, K+, Mg2+, Ca2+, Ni2+ and Al3+, with counter Cl? anions. Permeation rates depend on the charges of the cations and the ions' hydrated radius, with a critical point around 4.0 ?. The two-dimensional metal carbide desalination membranes can be used as desalination and/or water filtration membranes.Type: GrantFiled: November 17, 2015Date of Patent: December 3, 2019Assignee: Qatar Foundation for Education, Science and Community DevelopmentInventors: Khaled Ahmed Mahmoud, Yury Gogotsi, Chang Evelyn Ren
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Patent number: 10497934Abstract: A negative electrode active material for a secondary battery is provided. The negative electrode active material is composed of a composite including a metal element-doped inorganic particle or inorganic oxide particle, and a polymer coating layer coated on the metal element-doped inorganic particle or inorganic oxide particle, wherein the metal element is included in an amount of 0.01 to 20 parts by weight based on 100 parts by weight of the inorganic particle or inorganic oxide particle. Also provided are a method for preparing the negative electrode active material and a secondary battery having enhanced lifetime and high-efficiency charge/discharge properties by including the negative electrode active material.Type: GrantFiled: October 21, 2016Date of Patent: December 3, 2019Assignee: LG CHEM, LTD.Inventors: Su Jin Park, Yong Ju Lee, Eun Kyung Kim
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Patent number: 10483556Abstract: A fuel cell electrode, comprising: a porous metal structure; and a carbon nanotube structure comprising a plurality of carbon nanotubes, the carbon nanotube structure is fixed on a surface of the porous metal structure, wherein the porous metal structure and the carbon nanotube structure are shrunk together to form a plurality of wrinkled parts.Type: GrantFiled: October 31, 2017Date of Patent: November 19, 2019Assignees: Tsinghua University, HON HAI PRECISION INDUSTRY CO., LTD.Inventors: Hong-Ying Fu, Wen-Zhen Li
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Patent number: 10483534Abstract: A lithium metal anode electrode includes (a) a porous conductive layer including a current collector layer that is porous and has a plurality of first pores, at least parts of the first pores extending through the current collector layer; and a conduction loading layer composed of a porous material that does not alloy with lithium, disposed proximate to the current collector layer, and that having a plurality of second pores, at least parts of the second pores extending through the conduction loading layer; and (b) a lithium metal active material layer composed of lithium metal disposed proximate to the porous conductive layer. Parts of the first and second pores are connected and expose the lithium metal active material layer for electrochemical reactions. The first and second pores have respective surface areas that are adapted for lithium deposition so that a stable SEI layer can be formed thereon.Type: GrantFiled: July 13, 2015Date of Patent: November 19, 2019Assignee: PROLOGIUM HOLDING INC.Inventor: Szu-Nan Yang
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Patent number: 10476101Abstract: To improve cycle durability in an electrical device such as a lithium ion secondary battery including a negative electrode containing a silicon-containing negative electrode active material, an electrical device includes a power generating element containing a unit cell layer. The unit cell contains a positive electrode in which a positive electrode active material layer containing a positive electrode active material is formed on a surface of a positive electrode current collector, a negative electrode in which a negative electrode active material layer containing a silicon-containing negative electrode active material is formed on a surface of a negative electrode current collector, and a separator. In the unit cell layer, the electrical device satisfies formula (1): 0.91?C/A<0.99 where the area of the negative electrode active material layer is A [m2] and the area of the positive electrode active material layer is C [m2].Type: GrantFiled: January 24, 2014Date of Patent: November 12, 2019Assignee: NISSAN MOTOR CO., LTD.Inventors: Wataru Ogihara, Shinji Yamamoto, Hideaki Tanaka
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Patent number: 10476072Abstract: An electrode for a metal-ion battery is provided wherein the active layer of the electrode comprises a plurality of porous particles comprising an electroactive material selected from silicon, germanium, tin, aluminium and mixtures thereof and a plurality of carbon particles selected from one or more of graphite, soft carbon and hard carbon. The ratio of the D50 particles size of the carbon particles to the D50 particle diameter of the porous particles is in the range of from 1.5 to 30. Also provided are rechargeable metal-ion batteries comprising said electrode and compositions of porous particles and carbon particles which may be used to prepare the active layer of said electrode.Type: GrantFiled: December 14, 2015Date of Patent: November 12, 2019Assignee: Nexeon LimitedInventors: Christopher Friend, Tsuyonobu Hatazawa
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Patent number: 10454103Abstract: The present application is generally directed to composites comprising a hard carbon material and an electrochemical modifier. The composite materials find utility in any number of electrical devices, for example, in lithium ion batteries. Methods for making the disclosed composite materials are also disclosed.Type: GrantFiled: August 11, 2017Date of Patent: October 22, 2019Assignee: Group14 Technologies, Inc.Inventors: Avery J. Sakshaug, Leah A. Thompkins, Henry R. Costantino, Aaron M. Feaver
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Patent number: 10446848Abstract: Carbon-based electrode materials including graphite particles bridged by hemispheres of fullerene, as well as methods of synthesizing the carbon-based electrode materials, are disclosed. These carbon-based electrode materials may allow for decreased irreversible capacity loss during cycling in lithium-ion battery systems.Type: GrantFiled: March 15, 2017Date of Patent: October 15, 2019Assignee: HONDA MOTOR CO., LTD.Inventor: Avetik Harutyunyan
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Patent number: 10439205Abstract: The present invention relates to a nickel-based composite oxide for a lithium secondary battery, and a lithium secondary battery including the same, and provides a nickel-based composite oxide for a lithium secondary battery, which comprises: a core part; and at least one tunnel connected from the inside of the core part to the outside thereof, wherein the tunnel has a diameter of 100 nm or larger, and the composite oxide further comprises coating layers located inside the tunnel and outside the core part.Type: GrantFiled: August 28, 2015Date of Patent: October 8, 2019Assignee: L&F CO., LTD.Inventors: Su An Choi, Ji Sun An, Chang Min Choi, Su Youn Kwong, Hyun Chul Jung, Sung Woo Cho
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Patent number: 10431813Abstract: The present disclosure relates to a carbon-silicon composite structure including a carbon particle layer having silicon nanoparticles dispersed therein, a method of preparing the carbon-silicon composite structure, a secondary battery anode material including the carbon-silicon composite structure, and a secondary battery including the secondary battery anode material.Type: GrantFiled: February 24, 2017Date of Patent: October 1, 2019Assignee: Sogang University Research FoundationInventors: Jun Hyuk Moon, Whonhee Lee
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Patent number: 10431817Abstract: An electrode material includes an inorganic particle and a carbonaceous film coating a surface of the inorganic particle, in which an amount of carbon is 0.8 to 2.5% by mass, and volume of micropores in a micropore diameter range of 2 to 200 nm is 3×10?2 to 3×10?1 cm3/g. A method for manufacturing an electrode material includes a step of immersing the inorganic particle in an aqueous solution, a step of producing a slurry including the inorganic particle immersed in an aqueous solution, a carbonaceous film precursor, and water, a step of producing a dried substance of the slurry, and a step of calcinating the dried substance in a non-oxidative atmosphere, in which an amount of the carbonaceous film precursor blended into the inorganic particle is 1.0 to 5.0 parts by mass. A lithium-ion secondary battery includes a cathode that is the electrode; an anode; and a non-aqueous electrolyte.Type: GrantFiled: September 27, 2017Date of Patent: October 1, 2019Assignee: SUMITOMO OSAKA CEMENT CO., LTD.Inventors: Hirofumi Yasumiishi, Ryuuta Yamaya
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Patent number: 10424785Abstract: A negative electrode material for a non-aqueous electrolyte secondary battery includes a plurality of composite particles. Each of the plurality of composite particles includes an inorganic particle, one or more covering layers, each of which is in contact with a surface of the inorganic particle, and a carbonaceous material layer that covers the inorganic particle and has voids. The carbonaceous material layer includes a first region having a porosity of 4.3% or more and 10.0% or less, the first region being a region extending from the surface of the inorganic particle to the surface of an imaginary sphere that is centered at the center of the inorganic particle and has a radius of 3r, where r is a radius of the inorganic particle. Each of the voids is separated by one of the one or more covering layers from the surface of the inorganic particle.Type: GrantFiled: June 15, 2017Date of Patent: September 24, 2019Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Daisuke Katou, Kenichi Hotehama, Junko Matsushita
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Patent number: 10424783Abstract: A composite anode active material includes a metallic core alloyable with lithium, and a coating layer on the metallic core, the coating layer including lithium fluoride (LiF) nanoparticles and a carbonaceous material.Type: GrantFiled: September 2, 2016Date of Patent: September 24, 2019Assignee: Samsung SDI Co., Ltd.Inventors: Hyeri Eom, Sora Lee, Changsu Shin, Chang Ui Jeong
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Patent number: 10396351Abstract: A negative electrode material for a non-aqueous electrolyte secondary battery contains negative electrode active material particles containing a silicon compound expressed by SiOx, where 0.5?x?1.6, and a coating layer composed of an organic polymer coating the silicon compound, the silicon compound containing a lithium compound on its surface or inside.Type: GrantFiled: November 14, 2014Date of Patent: August 27, 2019Assignee: SHIN-ETSU CHEMICAL CO., LTD.Inventors: Hiromichi Kamo, Takakazu Hirose, Hiroki Yoshikawa
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Patent number: 10396363Abstract: An object of the present invention is to provide a copper foil inexpensive and sufficient in tensile strength even after heat treatment. The copper foil includes zinc in a content range of 0.02% by mass to 2.7% by mass in the total mass of the entire copper foil, and if the regions in thicknesses direction from both surfaces of the copper foil where occupies 5% by mass in the total mass of the entire copper foil are referred to as the respective external layers and a region between one external layer and the other external layer is referred to as an internal layer, the internal layer includes copper as a main element and includes 100 ppm or more of one or mixture of small amount-elements selected from carbon, sulfur, chlorine and nitrogen, and includes zinc at 10% or more in the total mass of zinc included in the entire copper foil.Type: GrantFiled: May 21, 2013Date of Patent: August 27, 2019Assignee: MITSUI MINING & SMELTING CO., LTD.Inventors: Koichi Miyake, Tomoyuki Maeda, Kazutaka Hozumi, Hiroaki Nakahara, Shinichi Yamauchi
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Patent number: 10392249Abstract: A hydrogen storage carbon material having a carbon structure suited for hydrogen storage and a production method thereof. The hydrogen storage carbon material according to this embodiment includes a carbon structure which has a ratio of an ultramicropore volume to a micropore volume of 60% or more, and in which stored hydrogen exhibits, in 1H-NMR measurement, a second peak at a position corresponding to a chemical shift of from ?2 ppm to ?20 ppm with respect to a first peak attributed to gaseous hydrogen.Type: GrantFiled: June 17, 2016Date of Patent: August 27, 2019Assignees: NATIONAL UNIVERSITY CORPORATION HOKKAIDO UNIVERSITY, NATIONAL UNIVERSITY CORPORATION GUNMA UNIVERSITY, NISSHINBO HOLDINGS INC.Inventors: Haruo Kumagai, Jun-ichi Ozaki, Asao Oya, Takafumi Ishii, Takuya Maie, Rieko Kobayashi, Yasuo Imashiro
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Patent number: 10377633Abstract: A non-flaky carbon material having specific optical structures, wherein the ratio between the peak intensity I110 of (110) plane and the peak intensity I004 of (004) plane of a graphite crystal determined by the powder XRD measurement, I110/I004, is 0.10 or more and 0.35 or less; an average circularity is 0.80 or more and 0.95 or less; d002 is 0.337 nm or less; and the total pore volume of pores having a diameter of 0.4 ?m or less measured by the nitrogen gas adsorption method is 25.0 ?l/g or more and 40.0 ?l/g or less. Also disclosed is a method for producing the carbon material, a carbon material for a battery electrode, a paste for an electrode incorporating the carbon material for a battery electrode, an electrode for a lithium battery incorporating a formed body of the paste for an electrode, a lithium-ion secondary battery including the electrode and a method for producing the electrode.Type: GrantFiled: February 8, 2016Date of Patent: August 13, 2019Assignee: SHOWA DENKO K.K.Inventors: Naoto Kawaguchi, Takashi Terashima, Yoshikuni Sato, Yasuaki Wakizaka
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Patent number: 10381640Abstract: Provided is a negative electrode active material that can improve the capacity per volume and charge-discharge cycle characteristics of a nonaqueous electrolyte secondary battery represented by a lithium ion secondary battery. The negative electrode active material according to the present embodiment contains an alloy phase. The alloy phase undergoes thermoelastic diffusionless transformation when releasing or occluding metal ions. The negative electrode active material of the present embodiment is used in a nonaqueous electrolyte secondary battery. Thermoelastic diffusionless transformation refers to so-called thermoelastic martensitic transformation.Type: GrantFiled: August 27, 2013Date of Patent: August 13, 2019Assignee: NIPPON STEEL CORPORATIONInventors: Sukeyoshi Yamamoto, Noriyuki Negi, Tatsuo Nagata, Koji Moriguchi, Mitsuharu Yonemura, Tomoyuki Kakeshita, Tomoyuki Terai, Takashi Fukuda
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Patent number: 10366802Abstract: The present invention relates to compositions including nano-particles and a nano-structured support matrix, methods of their preparation and applications thereof. The compositions of the present invention are particularly suitable for use as anode material for lithium-ion rechargeable batteries. The nano-structured support matrix can include nanotubes, nanowires, nanorods, and mixtures thereof. The composition can further include a substrate on which the nano-structured support matrix is formed. The substrate can include a current collector material.Type: GrantFiled: June 4, 2010Date of Patent: July 30, 2019Assignee: University of Pittsburgh—Of the Commonwealth System of Higher EducationInventors: Prashant Nagesh Kumta, Wei Wang, Prashanth Jampani, Bharat Gattu
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Patent number: 10355272Abstract: Provided are an anode active material for a lithium secondary battery including a silicon-based composite formed of silicon (Si) and crystalline SiO2, wherein the Si and crystalline SiO2 are in the form of grains, a method of preparing the same, and a lithium secondary battery including the anode active material. Since an anode active material according to an embodiment of the present invention includes a silicon-based composite including Si and SiO2 in a grain state and the SiO2 is crystalline SiO2, the reaction between amorphous SiO2 and lithium in an electrolyte may be excluded. Thus, since the crystalline SiO2 is included in the silicon-based composite, excellent capacity characteristics of a secondary battery may be maintained and initial efficiency and life characteristics may be improved when the silicon-based composite is used as an anode active material.Type: GrantFiled: October 31, 2014Date of Patent: July 16, 2019Assignee: LG Chem, Ltd.Inventors: Hyun Chul Kim, Yong Ju Lee, Eun Kyung Kim
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Patent number: 10347897Abstract: Disclosed herein is a secondary battery configured to have a structure in which an electrode assembly of a cathode/separator/anode structure is mounted in a battery case in a state in which the electrode assembly is impregnated with an electrolyte, wherein electrode tabs are attached to active material uncoated portions of electrode plates of the electrode assembly and an anode tab, which is one of the electrode tabs and one end of which is attached to a battery case, is made of a Cu—Ni alloy.Type: GrantFiled: July 16, 2014Date of Patent: July 9, 2019Assignee: LG CHEM, LTD.Inventors: Wook Hee Jang, Yong Ro Lee, Hyung Seok Han, Hyang Mok Lee, Sang Sok Jung
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Patent number: 10340512Abstract: The invention relates to a composite made of a porous carbon and an active material containing sulphur and to method for producing same. A method for producing a composite made of a porous carbon structure and sulphur is disclosed, said composite being characterized by a high capacitance and a low capacitance loss, when used as an electrode material for a lithium-sulphur secondary battery. According to the invention, a dispersion of carbon powder, an active material containing sulphur and an aqueous medium are treated hydrothermally at a temperature sufficient for melting sulphur. The liquid phase which forms, which contains the melted sulphur and water, infiltrates the pores of the porous carbon.Type: GrantFiled: May 23, 2017Date of Patent: July 2, 2019Assignee: Heraeus Quarzglas GmbH & Co. KGInventors: Matthias Otter, Jörg Becker, Sascha Pihan, Christian Neumann
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Patent number: 10333142Abstract: Disclosed is a secondary battery including a positive electrode including a current collector coated with a positive electrode mixture that includes a positive electrode active material; a negative electrode including a current collector coated with a negative electrode mixture that includes a negative electrode active material; and an electrolyte solution including a lithium salt and a non-aqueous solvent, wherein the negative electrode includes a carbon-based material and a silicon-based compound, and the non-aqueous solvent includes cyclic carbonate and/or a linear solvent. The secondary battery exhibits superior lifespan characteristics and safety.Type: GrantFiled: August 29, 2014Date of Patent: June 25, 2019Assignee: LG CHEM, LTD.Inventors: Yeo Kyung Yoon, Ju Bin Kim
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Patent number: 10312517Abstract: A sulfur particle containing a core of elemental sulfur having homogeneously dispersed particles of a conductive carbon and branched polyethyleneimine; and a coating of branched polyethyleneimine (bPEI) encapsulating the core is provided. In the sulfur particle the dispersed particles of conductive carbon are associated with the bPEI. A cathode having an active material containing the sulfur particles and a sulfur loading of 1.0 mg S/cm2 to 10 mg/cm2 and a battery containing the cathode are also provided.Type: GrantFiled: October 31, 2016Date of Patent: June 4, 2019Assignee: TOYOTA MOTOR ENGINEERING & MANUFACTURING NORTH AMERICA, INC.Inventors: John Muldoon, Claudiu B. Bucur
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Patent number: 10305108Abstract: A graphite-based active material including: a first composite particle including a first graphite core particle and a first non-graphite-based carbon material covering the surface of the first graphite core particle; and a second composite particle including a second graphite core particle and a second non-graphite-based carbon material covering the surface of the second graphite core particle, wherein the mass fraction of the second non-graphite-based carbon material in the second composite particle, mass fraction B, is 5% by mass or more and more than the mass fraction of the first non-graphite-based carbon material in the first composite particle, mass fraction A, and the proportion of the second composite particle to the total of the first composite particle and the second composite particle is 1% by mass or more.Type: GrantFiled: March 30, 2015Date of Patent: May 28, 2019Assignee: NEC ENERGY DEVICES, LTD.Inventor: Shin Tanaka
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Patent number: 10283747Abstract: A nonaqueous electrolyte secondary battery of the present invention includes a positive electrode containing olivine-structured Fe or a Mn-containing phosphorus compound as a positive electrode active material; a negative electrode containing a titanium-containing metal oxide capable of inserting and extracting lithium ions as a negative electrode active material; a nonwoven fabric separator, which contains an electrically insulating fiber and is bonded to a surface of at least one of the positive electrode and the negative electrode; and a nonaqueous electrolyte. In a thickness direction of the nonwoven fabric separator, a density of the fiber on a side having contact with the positive electrode is high, and a density of the fiber on a side having contact with the negative electrode is low.Type: GrantFiled: March 17, 2014Date of Patent: May 7, 2019Assignee: Kabushiki Kaisha ToshibaInventors: Yoshiyuki Isozaki, Norio Takami, Shinsuke Matsuno, Keigo Hoshina, Yuma Kikuchi
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Patent number: 10283772Abstract: The present invention relates to the field of the Li-ion battery and, particularly, relates to a cathode material for the Li-ion battery, a method for preparing the same and a Li-ion battery containing the same. A surface of the cathode material of spinel type lithium-manganese-nickel-containing composite oxide of the present invention is coated with a complex coating layer composed of a first coating layer containing Li7La3Zr2O12 and a second coating layer containing LiNbO3. The method includes: firstly coating the first coating layer containing Li7La3Zr2O12 on the surface of spinel type lithium-manganese-nickel-containing composite oxide in a solid phase method; and then coating the second coating layer containing LiNbO3 in a hydro-thermal method.Type: GrantFiled: January 18, 2017Date of Patent: May 7, 2019Assignee: NINGDE AMPEREX TECHNOLOGY LIMITEDInventors: Hui Liu, Leimin Xu, Liang Wang, Meng Wang, Wei Wang, Na Liu
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Patent number: 10283767Abstract: A method is described for producing silicon particles, in particular for an anode material of a lithium cell. In order to improve the cycle stability of lithium cells and to minimize losses in capacitance, in particular, microorganisms are dispersed in at least one solvent in a method step a), the solvent including at least one silicon compound. In a method step b), the at least one solvent is then removed, and a residue remains. In method step c), the residue is then heated under a reducing atmosphere. In addition, the invention relates to corresponding silicon particles, and to a corresponding anode material including silicon particles, and to a lithium cell provided with such.Type: GrantFiled: May 4, 2015Date of Patent: May 7, 2019Assignee: ROBERT BOSCH GMBHInventors: Andre Moc, Imke Heeren, Ingo Kerkamm, Pallavi Verma
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Patent number: 10269503Abstract: The present invention relates to a lithium-sulfur ultracapacitor including a cathode containing a sulfur-porous carbon composite material; a separator; a lithium metal electrode disposed on an opposite side of the cathode with respect to the separator; a graphite-based electrode disposed adjacent to the lithium metal electrode; and an electrolyte impregnating the cathode, the lithium metal electrode, and the graphite-based electrode, wherein the lithium metal electrode and the graphite-based electrode together constitute an anode, and a method of preparing the lithium-sulfur ultracapacitor.Type: GrantFiled: November 23, 2016Date of Patent: April 23, 2019Assignee: KOREA INSTITUTE OF CERAMIC ENGINEERING AND TECHNOLOGYInventors: Kwang Chul Roh, Dae Soo Jung, Mok-Hwa Kim
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Patent number: 10256050Abstract: An energy storage device, such as a sodium ion capacitor, including an anode and a cathode, at least one of the anode and the cathode including a nitrogen and oxygen functionalized carbon (NOFC). The NOFC has a nitrogen content greater than 4 wt %, such as 13 wt %, an oxygen content greater than 8 wt %, such as 11 wt %, and a surface area greater than 800 m2g?1, such as 945 m2g?1. The energy storage device has favorable reversible and rate capability, such as 437 mAhg?1 at 100 mAg?1, and 185 mAhg?1 at 1600 mA g?1.Type: GrantFiled: December 23, 2016Date of Patent: April 9, 2019Assignee: SPARKLE POWER LLCInventor: David Mitlin
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Patent number: 10256458Abstract: A battery electrode composition is provided that comprises a composite material comprising one or more nanocomposites. The nanocomposites may each comprise a planar substrate backbone having a curved geometrical structure, and an active material forming a continuous or substantially continuous film at least partially encasing the substrate backbone. To form an electrode from the electrode composition, a plurality of electrically-interconnected nanocomposites of this type may be aggregated into one or more three-dimensional agglomerations, such as substantially spherical or ellipsoidal granules.Type: GrantFiled: March 30, 2012Date of Patent: April 9, 2019Assignee: Georgia Tech Research CorporationInventors: Gleb Nikolayevich Yushin, Kara Linn Evanoff, Oleksandr Magazynskyy
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Patent number: 10243213Abstract: A bio-mineralized composition for use in an electrochemical cell is described. The bio-mineralized composition may comprise a material represented by general formula y[Li1±xMaOc].(1?y)[Mb(PO4)3±d(Ap)1±e].Cz or y[Ma].(1?y)[Mb(PO4)3±d(Ap)1±e].Cz or y[Li1±xMaOc].w[Li2±xMaOc].(1?y?w)[Mb(PO4)3±d(Ap)1±e].Cz or y[MaOv].(1?y)[Mb(PO4)3±d(Ap)1±e].Cz where M represents at least one element; Ap represents group of mixtures; C represents Carbon or its allotropes; P represents element phosphorous; Si represents silicon; Li represents lithium; B represents boron; O represents oxygen and x, y, z, w, a, b, c, d and e represent a number.Type: GrantFiled: September 8, 2017Date of Patent: March 26, 2019Inventor: Shailesh Upreti
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Patent number: 10243237Abstract: Metal-sulfur batteries, such as lithium-sulfur batteries, are prepared using one or more organosulfur species such as organic polysulfides and organic polythiolates as part of the liquid or gel electrolyte solution, as part of the cathode, as part of the anode (or used to treat the anode), and/or as part of a functionalized porous polymer providing an intermediate separator element.Type: GrantFiled: December 2, 2016Date of Patent: March 26, 2019Assignee: Arkema Inc.Inventors: Gary S. Smith, Lijuan Wang, George C. Fortman
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Patent number: 10243197Abstract: Provided is a lithium metal anode comprising a Langmuir-Blodgett films as an artificial solid electrolyte interface layer, a lithium metal battery comprising the same, and a preparation method thereof. Various ultra-thin film layers made of carbon and ceramic are formed on the surface of the LiM to serve as a stable artificial SEI layer and suppress formation and perforation of lithium dendrite and side reactions.Type: GrantFiled: February 27, 2017Date of Patent: March 26, 2019Assignees: Korean Institute of Science and Technology, Cornell UniversityInventors: Won Il Cho, Mun Sek Kim, In Wook Nah, Min Seop Kim, Lynden A. Archer, Snehashis Choudhury, Zhengyuan Tu
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Patent number: 10230103Abstract: Provided is a negative electrode active material that can improve the discharge capacity per volume and charge-discharge cycle characteristics. The negative electrode active material of the present embodiment includes a powder material and an oxide layer. The powder material contains an alloy phase which undergoes thermoelastic diffusionless transformation when releasing metal ions or occluding the metal ions. The oxide layer is formed on the surface of the powder material, and has a thickness of not more than 10 nm.Type: GrantFiled: February 25, 2015Date of Patent: March 12, 2019Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATIONInventors: Sukeyoshi Yamamoto, Noriyuki Negi, Tatsuo Nagata