Alkalated Carbon, Graphite, Or Carbonaceous Component Is Active Material Patents (Class 429/231.4)
  • Patent number: 11527753
    Abstract: A sulfur-carbon composite including a porous carbon material; and sulfur present in at least a part of pores of the porous carbon material and on an outer surface of the porous carbon material, wherein an inner surface and the outer surface of the porous carbon material are doped with a carbonate compound. Also, a positive electrode and a secondary battery including the same. Further, a method of preparing a sulfur-carbon composite and a method of preparing a positive electrode.
    Type: Grant
    Filed: October 29, 2018
    Date of Patent: December 13, 2022
    Assignee: LG ENERGY SOLUTION, LTD.
    Inventors: Soohyun Kim, Kwonnam Sohn, Doo Kyung Yang
  • Patent number: 11495794
    Abstract: A negative electrode active material for a lithium secondary battery which includes a silicon oxide-based composite represented by M-SiOx (wherein 0<x?2, and M is Li or Mg), artificial graphite and spheroidized natural graphite; the spheroidized natural graphite is present in an amount of 5 wt % to 15 wt % based on the combined weight of the silicon oxide-based composite, artificial graphite and the spheroidized natural graphite; the spheroidized natural graphite has a tap density of 0.9 g/cc or more; and the total content of N, O and H impurities in the spheroidized natural graphite is 200 ppm to 1000 ppm based on 0.1 g of the spheroidized natural graphite. A lithium secondary battery including the negative electrode active material is also provided. The lithium secondary battery shows improved adhesion between the negative electrode active material layer and the current collector, and provides improved battery performance.
    Type: Grant
    Filed: January 25, 2019
    Date of Patent: November 8, 2022
    Assignee: LG ENERGY SOLUTION, LTD.
    Inventors: Sun-Young Shin, Je-Young Kim, Su-Min Lee, Yong-Ju Lee
  • Patent number: 11462728
    Abstract: A method of producing a structured composite material is described. A porous media is provided, an electrically conductive material is deposited on surfaces or within pores of the plurality of porous media particles, and an active material is deposited on the surfaces or within the pores of the plurality of porous media particles coated with the electrically conductive material to coalesce the plurality of porous media particles together and form the structured composite material.
    Type: Grant
    Filed: August 19, 2020
    Date of Patent: October 4, 2022
    Assignee: Lyten, Inc.
    Inventors: Michael W. Stowell, Bryce H. Anzelmo, David Tanner, Bruce Lanning, Joe Griffith Cruz
  • Patent number: 11437625
    Abstract: An anode for a lithium battery comprises a graphene foam structure composed of multiple pores and pore walls and Si nanowires residing in the pores. The Si nanowires are formed in situ inside the pores. The pore walls comprise a 3D network of interconnected graphene planes or stacked graphene planes having an inter-plane spacing d002 from 0.3354 nm to 0.40 nm as measured by X-ray diffraction. The Si nanowires have a diameter from 2 nm to 100 nm and a length-to-diameter aspect ratio of at least 5 and the Si nanowires are in an amount from 0.5% to 99% by weight based on the total weight of the graphene foam and the Si nanowires combined.
    Type: Grant
    Filed: May 9, 2018
    Date of Patent: September 6, 2022
    Assignee: Global Graphene Group, Inc.
    Inventors: Yu-Sheng Su, Jun Yin, Aruna Zhamu, Bor Z. Jang
  • Patent number: 11394028
    Abstract: Provided is a porous anode material structure for a lithium-ion battery, the structure comprising (A) an integral 3D graphene-carbon hybrid foam comprising multiple pores, having a pore volume Vp, and pore walls; and (B) coating of an anode active material, having a coating volume Vc, coated on surfaces of the pore walls; wherein pore walls contain single-layer or few-layer graphene sheets chemically bonded by a carbon material having a carbon material-to-graphene weight ratio from 1/200 to 1/2, and wherein the volume ratio Vp/Vc is from 0.1/1.0 to 10/1.0.
    Type: Grant
    Filed: January 21, 2019
    Date of Patent: July 19, 2022
    Assignee: Global Graphene Group, Inc.
    Inventor: Bor Z. Jang
  • Patent number: 11322739
    Abstract: The present application relates to a secondary battery, a method for manufacturing the same and an apparatus containing the same. Specifically, in the secondary battery, the first negative electrode film comprises a first negative electrode active material, the second negative electrode film comprises a second negative electrode active material. The first negative electrode active material comprises natural graphite and satisfies: 12%?A?18%; the second negative electrode active material comprises artificial graphite and satisfies: 20%?B?30%; A is a resilience rate of the first negative electrode active material measured under an action force of 15,000 N, and B is a resilience rate of the second negative electrode active material measured under an action force of 15,000 N. The secondary battery of the present application can have better kinetic performance and better high-temperature storage performance while maintaining higher energy density.
    Type: Grant
    Filed: October 29, 2021
    Date of Patent: May 3, 2022
    Assignee: Contemporary Amperex Technology Co., Limited
    Inventors: Jianjun Ma, Rui Shen, Libing He
  • Patent number: 11296321
    Abstract: The present disclosure provides a negative electrode plate and a battery, the negative electrode plate comprises a negative current collector and a negative film, the negative film is provided on at least one surface of the negative current collector and comprises a negative active material, the negative active material comprises graphite, and the negative electrode plate satisfies a relationship: 0.27?P×1.1/G+2/VOI?1.3, P represents a porosity of the negative film, G represents a graphitization degree of the negative active material, VOI represents an OI value of the negative film. The battery of the present disclosure can have the characteristics of long cycle life, high energy density and excellent dynamics performance at the same time.
    Type: Grant
    Filed: April 26, 2019
    Date of Patent: April 5, 2022
    Assignee: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
    Inventors: Yuliang Shen, Meng Kang, Tianquan Peng, Jiazheng Wang, Libing He
  • Patent number: 11276859
    Abstract: A negative active material for a rechargeable lithium battery includes natural graphite including secondary particles in which a plurality of primary particles are assembled; amorphous carbon on the surface of the primary particles; and a coating layer including amorphous carbon surrounding the secondary particles, wherein the primary particles have an average particle diameter of about 5 ?m to about 15 ?m, the secondary particles have an average particle diameter of about 8 ?m to about 24 ?m, and a peak intensity ratio I(002)/I(110) is less than or equal to about 120 as measured by X-ray diffraction.
    Type: Grant
    Filed: September 4, 2019
    Date of Patent: March 15, 2022
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Eunjoo Lee, Jaehou Nah
  • Patent number: 11189822
    Abstract: Provided is an anode particulate or a solid mass of particulates for a lithium battery, the particulate comprising a graphite matrix and a single or a plurality of carbon foam-protected primary particles of an anode active material embedded or dispersed in said graphite matrix, wherein the primary particles of anode active material contain at least one porous particle having a surface pore, internal pore, or both surface and internal pores, having a pore volume of Vpp and a solid volume Va, the carbon foam contains pores having a pore volume Vp, and the volume ratio Vp/Va is from 0.1/1.0 to 5.0/1.0 or a total pore-to-solid volume ratio (Vp+Vpp)/Va is from 0.3/1.0 to 10/1.0 and wherein the carbon foam is physically or chemically connected to the graphite matrix and the primary anode particles. The carbon foam is preferably reinforced with a high-strength material.
    Type: Grant
    Filed: January 2, 2019
    Date of Patent: November 30, 2021
    Assignee: Global Graphene Group, Inc.
    Inventor: Bor Z. Jang
  • Patent number: 11108037
    Abstract: Provided is a method for preparing a graphene/ternary material composite for use in lithium ion batteries, comprising the following preparation steps: (a) mixing a ternary material and a graphene oxide powder in an organic solvent to form a mixed dispersion; (b) adding a reducing agent to the mixed dispersion from step (a), and carrying out a reduction reaction at a reduction temperature of 80-160° C. while stirring, to obtain a reduction reaction mixture after a reduction time of 60-240 min; and (c) evaporating the solvent from the reduction reaction mixture from step (b) while stirring, and drying and then annealing the mixture at a low temperature in an inert atmosphere to obtain a graphene/ternary material composite having a three-dimensional network structure. Also provided is a graphene/ternary material composite prepared by using this method.
    Type: Grant
    Filed: December 30, 2016
    Date of Patent: August 31, 2021
    Assignees: BEIJING TUNGHSU CARBON ADVANCED MATERIALS TECHNOLOGY CO., LTD., TUNGHSU GROUP CO., LTD.
    Inventors: Qing Li, Min Chen, Heran Li
  • Patent number: 11069897
    Abstract: Various arrangements of an anode-free solid-state battery cell are presented herein. The battery cell can include a lithium ion buffer layer that is located between a solid-state electrolyte and an anode current collector. Lithium ions may be stored within the lithium ion buffer layer when the battery cell is charged, which can decrease an amount of swelling within the battery cell.
    Type: Grant
    Filed: May 16, 2019
    Date of Patent: July 20, 2021
    Assignee: TeraWatt Technology Inc.
    Inventors: Ken Ogata, Yang Yang, Hajime Hoshi, Masatsugu Nakano, Hiroshi Imoto
  • Patent number: 11056704
    Abstract: Provided are hybrid active material structures for use in electrodes of electrochemical cells and methods of forming these structures. A hybrid active material structure comprises at least one first substructure and at least one second substructures, each comprising a different layered active material and interfacing each other. Combining multiple layered active materials into the same structure and arranging these materials in specific ways allow achieving synergetic effects of their desirable characteristics. For example, a layered active material, which forms a stable solid electrolyte interface (SEI) layer, may be form an outer shell of a hybrid active material structure and interface with electrolyte. This shell may surround another layered active material, which has a higher capacity but would otherwise forma a less stable SEI layer. Furthermore, multiple layered active materials may be arranged into a stack, in which one of these materials may operate as an ionic and/or electronic conductor.
    Type: Grant
    Filed: July 17, 2019
    Date of Patent: July 6, 2021
    Assignee: GRU ENERGY LAB INC.
    Inventors: Song Han, Sa Zhou
  • Patent number: 11043673
    Abstract: Provided are an anode active material for a lithium secondary battery and a lithium secondary battery comprising the same, wherein the anode active material comprises at least three types of spherical graphite, and a difference between a 90% volume cumulative diameter (D90) and a 10% volume cumulative diameter (D10) is in the range of 13.0 ?m?(D90?D10)?35.0 ?m.
    Type: Grant
    Filed: January 17, 2018
    Date of Patent: June 22, 2021
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Hee Seon Choi, Sangpil Kim, Youngugk Kim, Jiyeon Kwak, Yeongap Kim
  • Patent number: 11038205
    Abstract: A surface-enabled, metal ion-exchanging battery device comprising a cathode, an anode, a porous separator, and a metal ion-containing electrolyte, wherein the metal ion is selected from aluminum (Al), gallium (Ga), indium (In), tin (Sn), lead (Pb), or bismuth (Bi), and at least one of the electrodes contains therein a metal ion source prior to the first charge or discharge cycle of the device and at least the cathode comprises a functional material or nano-structured material having a metal ion-capturing functional group or metal ion-storing surface in direct contact with the electrolyte. This energy storage device has a power density significantly higher than that of a lithium-ion battery and an energy density dramatically higher than that of a supercapacitor.
    Type: Grant
    Filed: July 12, 2017
    Date of Patent: June 15, 2021
    Assignee: Global Graphene Group, Inc.
    Inventors: Aruna Zhamu, Bor Z. Jang
  • Patent number: 11018336
    Abstract: Provided is graphene-embraced particulate for use as a lithium-ion battery anode active material, wherein the particulate comprises primary particle(s) of an anode active material and multiple sheets of a first graphene material overlapped together to embrace or encapsulate the primary particle(s) and wherein a single or a plurality of graphene-encapsulated primary particles, along with an optional conductive additive, are further embraced or encapsulated by multiple sheets of a second graphene material, wherein the first graphene and/or the second graphene material is attached to a redox partner species (e.g. sulfonyl group, —NH2, etc.) capable of reversibly forming a redox pair with lithium. The invention also provides an anode electrode and a battery comprising multiple graphene-embraced particulates having redox forming species bonded thereto.
    Type: Grant
    Filed: June 6, 2018
    Date of Patent: May 25, 2021
    Assignee: Global Graphene Group, Inc.
    Inventors: Aruna Zhamu, Bor Z. Jang
  • Patent number: 10991937
    Abstract: A negative electrode active material including a negative electrode active material particle, wherein the negative electrode active material particle includes a silicon compound particle comprising a silicon compound (SiOx: 0.5?x?1.6), the silicon compound particle includes crystalline Li2SiO3 and Li2Si2O5 in at least part of the silicon compound particle, among a peak intensity A derived from Li2SiO3, a peak intensity B derived from Si, a peak intensity C derived from Li2Si2O5, and a peak intensity D derived from SiO2 which are obtained from a 29Si-MAS-NMR spectrum of the silicon compound particle, the peak intensity A or the peak intensity C is the highest intensity, and the peak intensity A and the peak intensity C satisfy a relationship of the following formula 1,formula 1: C/3?A?3C.
    Type: Grant
    Filed: April 10, 2017
    Date of Patent: April 27, 2021
    Assignee: SHIN-ETSU CHEMICAL CO., LTD.
    Inventors: Takakazu Hirose, Hiromichi Kamo
  • Patent number: 10862115
    Abstract: Provided is an anode material for a secondary battery which reduces and inhibits swelling of a high-capacity silicon-containing alloy material to realize excellent charge/discharge cycle characteristics. The anode material includes alloy particles containing a transition metal which has electron conductivity, is difficult to react with lithium atoms and is at least one selected from the group of metals that belong to transition metals, and silicon, wherein the alloy particles include amorphous silicon, and silicide microcrystals formed by silicon and the transition metal, and the silicide microcrystals are scattered in amorphous silicon.
    Type: Grant
    Filed: May 30, 2016
    Date of Patent: December 8, 2020
    Inventors: Keiko Matsubara, Yoshiyuki Igarashi
  • Patent number: 10826128
    Abstract: A galvanic element is provided having a solid-state cell stack containing a multiplicity of electrochemical solid-state cells stacked along a longitudinal axis in a housing. Each of the electrochemical solid-state cells has a stack including at least one anode layer, at least one cathode layer and at least one solid electrolyte layer arranged between the anode layer and the cathode layer. At least one of the electrochemical solid-state cells includes an elastically deformable compensation element, which at least partly compensates for a change in volume along the longitudinal axis of the stacked electrochemical solid-state cells. A method for producing such galvanic elements is also provided. Advantageous applications are found in vehicles and mobile devices including such galvanic elements.
    Type: Grant
    Filed: October 21, 2016
    Date of Patent: November 3, 2020
    Assignee: Bayerische Motoren Werke Aktiengesellschaft
    Inventors: Saskia Lupart, Odysseas Paschos, Peter Lamp
  • Patent number: 10818440
    Abstract: The present disclosure relates to a pseudocapacitive conductive composite including conductive polymer chains formed on a graphene sheet, a composite for an electrode including sub-nanoscale particles of a metal oxide or metal sulfide formed on a graphene sheet, and an aqueous hybrid capacitor including the composites as electrode active materials.
    Type: Grant
    Filed: June 26, 2018
    Date of Patent: October 27, 2020
    Assignee: Korea Advanced Institute of Science and Technology
    Inventors: Jeung Ku Kang, Il Woo Ock
  • Patent number: 10790535
    Abstract: An electrode for a secondary cell includes a current collector and an electrode layer. The electrode layer has a gas flow passage disposed on the surface and/or in the interior of the electrode layer. The gas flow passage extends in the in-plane direction of the electrode layer. The electrode layer is made from an electrode layer forming material that contains an electrode active material and an ion conductive liquid and is a non-bonded body. A secondary cell comprises a power generation element having an electrolyte layer, a positive electrode disposed on a first surface side of the electrolyte layer, and a negative electrode disposed on a second surface side on the back of the first surface side of the electrolyte layer; and an outer casing that houses the power generation element. At least one of the positive electrode and the negative electrode is the electrode for a secondary cell.
    Type: Grant
    Filed: December 14, 2017
    Date of Patent: September 29, 2020
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Takamasa Nakagawa, Hiroyuki Tanaka, Takahiro Tsukada, Hideaki Horie, Yuuki Kusachi, Yuusuke Emori, Yuusuke Mizuno
  • Patent number: 10790512
    Abstract: The present invention is intended to provide a nonaqueous electrolyte secondary battery that is suppressed in generation of a gas and a micro short circuit of a negative electrode, while exhibiting an excellent rate characteristic. The present invention relates to a nonaqueous electrolyte secondary battery having a sealed body 70 that encloses a positive electrode 40, a nonaqueous electrolyte solution 60, a negative electrode 30, and a separator 50 formed of an electrically insulating material. The negative electrode 30 is formed by forming a negative electrode active material layer 21, which contains at least a negative electrode active material 12 and a negative electrode binder 11, on a current collector 22. The negative electrode active material 12 contains a titanium compound as a main component, the titanium compound having a particle diameter of 0.1 ?m or more and 20.0 ?m or less.
    Type: Grant
    Filed: October 18, 2016
    Date of Patent: September 29, 2020
    Assignee: KANEKA CORPORATION
    Inventors: Ayumi Takaoka, Akiko Waki
  • Patent number: 10756351
    Abstract: The present invention is intended to provide a nonaqueous electrolyte secondary battery that is suppressed in generation of a gas and a micro short circuit of a negative electrode, while exhibiting an excellent rate characteristic. The present invention relates to a nonaqueous electrolyte secondary battery having a sealed body 70 that encloses a positive electrode 40, a nonaqueous electrolyte solution 60, a negative electrode 30, and a separator 50 formed of an electrically insulating material. The negative electrode 30 is formed by forming a negative electrode active material layer 21, which contains at least a negative electrode active material 12 and a negative electrode binder 11, on a current collector 22. The negative electrode active material 12 contains a titanium compound as a main component, the titanium compound having a particle diameter of 0.1 ?m or more and 20.0 ?m or less.
    Type: Grant
    Filed: October 18, 2016
    Date of Patent: August 25, 2020
    Assignee: KANEKA CORPORATION
    Inventors: Ayumi Takaoka, Akiko Waki
  • Patent number: 10756338
    Abstract: Provided are a method of manufacturing a cathode active material including a first step of preparing a metal glycolate solution, a second step of mixing lithium-containing transition metal oxide particles and the metal glycolate solution and stirring in a paste state, a third step of drying the paste-state mixture, and a fourth step of performing a heat treatment on the dried mixture, a cathode active material including a metal oxide layer which is manufactured by the above method, and a secondary battery composed of a cathode including the cathode active material.
    Type: Grant
    Filed: September 30, 2014
    Date of Patent: August 25, 2020
    Assignee: LG Chem, Ltd.
    Inventors: Dong Kwon Lee, Seung Beom Cho, Jun Seok Nho, Wook Jang
  • Patent number: 10727480
    Abstract: A sulfur composite cathode material and a preparation method thereof. After a sulfur-containing suspension is mixed with a host material, the isolated sulfur of large particles is transformed into a uniform sulfur coating on the surface of the host material through the “solid-liquid-solid” phase transition process of elemental sulfur. The organic solvent is removed to obtain a sulfur composite cathode material; and the host material comprises a carbon material. By utilizing the dissolving-precipitating balance of the elemental sulfur in the selected organic solvent, through the strong interaction between the carbon material and the elemental sulfur dissolved in the organic solvent, the sulfur dissolved in the solution is continuously deposited on the surface of the host material, and the undissolved sulfur particles is continuously dissolved in the organic solvent, and then continuously deposited on the surface of the sulfur-carrying material, so as to obtain a uniform sulfur composite cathode material.
    Type: Grant
    Filed: July 3, 2018
    Date of Patent: July 28, 2020
    Assignee: Sun Yat-Sen University
    Inventors: Zishou Zhang, Kancheng Mai, Xuliang Fan, Geng Cheng, Yangfan Zhang
  • Patent number: 10720637
    Abstract: A method for making a positive electrode includes the following steps: dispersing a plurality of carbon nanotubes in water, to form a carbon nanotube dispersion; adding an aniline solution into the carbon nanotube dispersion, to form a mixed solution; adding an initiator into the mixed solution, to form a carbon nanotube composite structure preform; freeze-drying the carbon nanotube composite structure preform in a vacuum environment; carbonizing the carbon nanotube composite structure preform in a protective gas after freeze-drying, to form a carbon nanotube composite structure; and adding a positive electrode active material into the carbon nanotube composite structure. The present application also relates to the positive electrode and a battery including the positive electrode.
    Type: Grant
    Filed: November 1, 2018
    Date of Patent: July 21, 2020
    Assignees: Tsinghua University, HON HAI PRECISION INDUSTRY CO., LTD.
    Inventors: Yue-Gang Zhang, Lu-Jie Jia, Jian Wang, Yang Wu, Shou-Shan Fan
  • Patent number: 10700347
    Abstract: The present disclosure relates to a lithium-ion battery anode comprising a flexible and free-standing carbon nanotube film, and a plurality of titanium dioxide nanoparticles uniformly adsorbed on a surface of each of the plurality of carbon nanotubes. The flexible and free-standing carbon nanotube film comprises a plurality of carbon nanotubes. A particle size of each of the plurality of titanium dioxide nanoparticles is less than or equal to 30 nanometers. The present disclosure also relates to a lithium-ion battery comprising the lithium-ion battery anode.
    Type: Grant
    Filed: February 8, 2018
    Date of Patent: June 30, 2020
    Assignees: Tsinghua University, HON HAI PRECISION INDUSTRY CO., LTD.
    Inventors: Kun-Lei Zhu, Kai Liu, Jia-Ping Wang, Kai-Li Jiang, Shou-Shan Fan
  • Patent number: 10693183
    Abstract: A sodium-ion battery that includes an anode comprising hard carbon and lithium; and an electrolyte composition comprising an ether solvent and a sodium salt.
    Type: Grant
    Filed: April 9, 2015
    Date of Patent: June 23, 2020
    Assignee: Battelle Memorial Institute
    Inventors: Xiaolin Li, Jun Liu, Vincent L. Sprenkle
  • Patent number: 10693139
    Abstract: The present disclosure relates to a carbonaceous structure and a method for preparing the same, an electrode material and a catalyst including the carbonaceous structure, and an energy storage device including the electrode material.
    Type: Grant
    Filed: September 29, 2017
    Date of Patent: June 23, 2020
    Assignee: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Jeungku Kang, Jong Ho Won, Hyungmo Jeong
  • Patent number: 10680271
    Abstract: The purpose of the present invention is to provide a secondary cell in which a decrease in energy density is inhibited. In order to achieve this purpose, this secondary cell has a positive electrode in which a positive electrode active material layer is provided on a positive electrode collector, and a negative electrode in which a negative electrode active material layer is provided on a negative electrode collector; the positive electrode active material layer and the negative electrode active material layer are laminated so as to face each other with a separator interposed therebetween; the negative electrode active material layer has a greater area than the positive electrode active material layer; and a thin section is provided in at least a part of the negative electrode active material layer at a location where the negative electrode active material layer does not face the positive electrode active material layer.
    Type: Grant
    Filed: December 16, 2016
    Date of Patent: June 9, 2020
    Assignee: NEC CORPORATION
    Inventor: Takuya Hasegawa
  • Patent number: 10629892
    Abstract: A negative electrode for a rechargeable lithium battery includes a negative active material layer on a current collector. The negative active material layer includes a carbon-based negative active material. A Degree of Divergence (DD) value of the negative electrode is greater than or equal to about 19. The DD value may be calculated based on the following equation: DD(Degree of Divergence)=(Ia/Itotal)*100 where Ia is a sum of peak intensities at non-planar angles measured by XRD using a CuK? ray and Itotal is a sum of peak intensities at all angles measured by XRD using a CuK? ray.
    Type: Grant
    Filed: October 31, 2017
    Date of Patent: April 21, 2020
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Jinhyon Lee, Bokhyun Ka, Kyeuyoon Sheem, Soonho Ahn
  • Patent number: 10587007
    Abstract: Provided are a lithium secondary battery electrolyte and a lithium secondary battery. The lithium secondary battery electrolyte includes a lithium salt, non-aqueous organic solvent, and an oxalate derivative. The lithium secondary battery includes a cathode, an anode, a separator, and the lithium secondary battery electrolyte. The lithium secondary battery electrolyte has excellent high-temperature stability, a high discharge capacity at a low temperature, and excellent lifespan characteristics.
    Type: Grant
    Filed: December 19, 2014
    Date of Patent: March 10, 2020
    Assignee: SK Innovation Co., Ltd.
    Inventors: Jin Sung Kim, Hyo Seung Park, Seong Il Lee, Kwang Kuk Lee
  • Patent number: 10535872
    Abstract: A negative electrode active material that includes negative electrode active material particles that contain a silicon compound that contains a Li compound. The silicon compound is at least partially coated with a carbon coating, and the negative electrode active material particles are coated with a coating composed of at least one of a compound having a boron-fluorine bond and a compound having a phosphorous-fluorine bond on at least a part of the surface of either or both of the silicon compound and the carbon coating. The negative electrode active material particles contain a boron or a phosphorous element in a range of 10 to 10000 ppm by mass with respect to the total amount of negative electrode active material particles. These features can provide for a negative electrode active material that can increase battery capacity and improve cycle performance in a non-aqueous electrolyte secondary battery.
    Type: Grant
    Filed: April 21, 2016
    Date of Patent: January 14, 2020
    Assignee: SHIN-ETSU CHEMICAL CO., LTD.
    Inventors: Takumi Matsuno, Hiromichi Kamo, Takakazu Hirose, Hiroki Yoshikawa
  • Patent number: 10424775
    Abstract: A lithium battery includes an anode, a cathode, and a protective film disposed on at least one of the anode and the cathode, in which the protective film includes a compound including: i) at least one element selected from a Group 13 element, a Group 14 element, a Group 15 element, and a first Group 16 element; and ii) a second Group 16 element, in which the first Group 16 element is different from the second Group 16 element.
    Type: Grant
    Filed: May 2, 2017
    Date of Patent: September 24, 2019
    Assignees: SAMSUNG ELECTRONICS CO., LTD., SAMSUNG SDI CO., LTD.
    Inventors: Youngeal Kim, Wooyoung Yang, Kihong Kim, Hyorang Kang
  • Patent number: 10381637
    Abstract: Provided is a less hygroscopic carbonaceous material that is obtained from a plant-derived carbonaceous raw material and that, when used as a negative electrode material for a nonaqueous electrolyte secondary battery, allows the battery to exhibit good battery characteristics. Provided is a carbonaceous material for negative electrodes of nonaqueous electrolyte secondary batteries. This carbonaceous material is a particulate carbonaceous material containing carbonaceous particles. The carbonaceous material has a BET specific surface area of 1 m2/g or more and less than 20 m2/g. Each of the carbonaceous particles of the carbonaceous material has a core and a skin covering the core. The core contains a calcined product of a plant-derived carbonaceous raw material. The skin is made of a material that has higher electron emission ability upon irradiation with an electron beam than a material of the core.
    Type: Grant
    Filed: October 10, 2014
    Date of Patent: August 13, 2019
    Assignee: KURARAY CO., LTD.
    Inventors: Akira Koshima, Taketoshi Okuno, Kenichi Koyakumaru, Hideharu Iwasaki, Kenta Aoki, Makoto Imaji, Yasuhiro Tada, Naohiro Sonobe
  • Patent number: 10305107
    Abstract: Surface-modified, low surface area synthetic graphite may have a BET surface from 1.0 to 4.0 m2/g and a crystallite size Lc to crystallite size La ratio of greater than 1. Processes for modifying the surface of low surface area synthetic graphite may result in surface-modified, low surface area synthetic graphite have a BET surface from 1.0 to 4.0 m2/g and a crystallite size Lc to crystallite size La ratio of greater than 1. Such synthetic graphite may have many uses, including for example, as a negative electrode material in lithium-ion batteries.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: May 28, 2019
    Assignee: Imerys Graphite & Carbon Switzerland Ltd.
    Inventors: Michael E. Spahr, Pirmin A. Ulmann, Simone Zurcher, Michal Gulas, Flavio Mornaghini
  • Patent number: 10283760
    Abstract: A nonaqueous electrolyte secondary battery, wherein the negative electrode contains a titanium-containing oxide; the positive electrode contains a spinel type lithium manganate, and a cobalt-containing compound and/or a lithium-transition metal composite oxide having a stratified rock salt type structure; and the nonaqueous electrolyte contains one compound selected from the group consisting of an organic compound having an oxalic acid backbone, an organic compound having an isocyanate group, a lithium salt of an organic compound having a sulfonic acid backbone, and a succinic anhydride compound having a side chain with 3 or more carbon atoms in a content of 0.01 to 5% by weight with respect to 100% by weight of the nonaqueous electrolyte.
    Type: Grant
    Filed: December 18, 2014
    Date of Patent: May 7, 2019
    Assignee: KANEKA CORPORATION
    Inventors: Yuuki Sawada, Yukimasa Niwa
  • Patent number: 10236500
    Abstract: A method of operating a lithium-ion cell comprising (a) a cathode comprising a carbon or graphitic material having a surface area to capture and store lithium thereon; (b) an anode comprising an anode active material; (c) a porous separator disposed between the two electrodes; (d) an electrolyte in ionic contact with the two electrodes; and (e) a lithium source disposed in at least one of the two electrodes to obtain an open circuit voltage (OCV) from 0.5 volts to 2.8 volts when the cell is made; wherein the method comprises: (A) electrochemically forming the cell from the OCV to either a first lower voltage limit (LVL) or a first upper voltage limit (UVL), wherein the first LVL is no lower than 0.1 volts and the first UVL is no higher than 4.6 volts; and (B) cycling the cell between a second LVL and a second UVL.
    Type: Grant
    Filed: April 19, 2017
    Date of Patent: March 19, 2019
    Assignee: Nanotek Instruments, Inc.
    Inventors: Aruna Zhamu, Bor Z. Jang
  • Patent number: 10218003
    Abstract: An anode and a secondary battery including the anode, which can improve charge and discharge efficiency and can reduce or suppress precipitation of metal ions, are provided. The anode includes a negative electrode active material layer on a current collector, the negative electrode active material layer including a negative electrode active material, a binder, and a conductive material. The negative electrode active material includes at least one pore on a surface thereof, and the conductive material is located at the pore of the negative electrode active material.
    Type: Grant
    Filed: April 5, 2016
    Date of Patent: February 26, 2019
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Youngeun Kim, Eunjung Kim, Sangwoon Yang, In Kim
  • Patent number: 10164242
    Abstract: Porous electrodes in which the porosity has a low tortuosity are generally provided. In some embodiments, the porous electrodes can be designed to be filled with electrolyte and used in batteries, and can include low tortuosity in the primary direction of ion transport during charge and discharge of the battery. In some embodiments, the electrodes can have a high volume fraction of electrode active material (i.e., low porosity). The attributes outlined above can allow the electrodes to be fabricated with a higher energy density, higher capacity per unit area of electrode (mAh/cm2), and greater thickness than comparable electrodes while still providing high utilization of the active material in the battery during use. Accordingly, the electrodes can be used to produce batteries with high energy densities, high power, or both compared to batteries using electrodes of conventional design with relatively highly tortuous pores.
    Type: Grant
    Filed: May 19, 2015
    Date of Patent: December 25, 2018
    Assignees: Massachusetts Institute of Technology, The Regents of the University of Michigan, The Regents of the University of California
    Inventors: Yet-Ming Chiang, Chang-Jun Bae, John William Halloran, Qiang Fu, Antoni P. Tomsia, Can K. Erdonmez
  • Patent number: 10050275
    Abstract: An electrode for lithium ion recharged battery cell includes current collectors, a cathode layer, a separator and a cohesive anode mass. The cohesive anode mass includes silicon as an active material and a polymeric binder. The polymeric binder is a homo-polymer or copolymer of one or more monomers selected from the group consisting of acrylic acid, 3-butenoic acid, 2-methacrylic acid, 2-pentenoic acid, 2,3-dimethylacrylic acid, 3,3-dymethylacrylic acid, trans-butenedioc acid, cis-butenedioc acid and itaconic acid and optionally an alkali metal salt thereof. The silicon can include 20 to 100% of the active material in the cohesive mass. The binder is mixed with the silicon to form the cohesive mass that adheres to the current collector and maintains the cohesive mass in electrical contact with the current collector.
    Type: Grant
    Filed: May 7, 2010
    Date of Patent: August 14, 2018
    Assignee: Nexeon Limited
    Inventors: Melanie J. Loveridge, Michael Jonathan Lain, Esam Kronfli
  • Patent number: 9947927
    Abstract: An object of the present invention is to provide a production method for suppressing the deformation of a negative electrode in the production of a negative electrode for an all-solid-state battery using turbostratic carbon and a solid electrolyte. The problem described above can be solved by a production method for a negative electrode for an all-solid-state battery comprising the steps of: (1) coating a carbonaceous material having a true density of from 1.30 g/cm3 to 2.10 g/cm3 determined by a butanol method with a solid electrolyte; and (2) pressure-molding the solid electrolyte-coated carbonaceous material.
    Type: Grant
    Filed: March 31, 2015
    Date of Patent: April 17, 2018
    Assignee: KUREHA CORPORATION
    Inventors: Kenta Aoki, Shota Kobayashi, Tatsuya Yaguchi, Hiroshi Imoto, Yasuhiro Tada, Naohiro Sonobe
  • Patent number: 9923180
    Abstract: Porous separators for use in electrochemical cells and methods of their manufacture are provided. The separators are porous structures comprising an electroactive material and an electronically insulating structural material, wherein the electroactive material forms a percolating path in the separator.
    Type: Grant
    Filed: June 2, 2008
    Date of Patent: March 20, 2018
    Assignee: A123 Systems LLC
    Inventors: Karen E. Thomas-Alyea, Susan J. Babinec, Richard K. Holman
  • Patent number: 9871248
    Abstract: A composition including a plurality of electroactive porous particle fragments including silicon as an electroactive material is characterized in that each porous particle fragment includes a network of pores defined and separated by silicon containing walls. The network of pores suitably has a three dimensional arrangement of pores extending through the volume of the particle in which the pore openings are provided on two or more planes over the surface of the particle. The composition is useful as an electroactive material that is able to form an alloy with lithium and can be used in the fabrication of anodes for use in lithium ion secondary batteries. A method of fabricating the silicon containing porous particle fragments is also disclosed.
    Type: Grant
    Filed: September 2, 2011
    Date of Patent: January 16, 2018
    Assignee: Nexeon Limited
    Inventors: Philip John Rayner, Melanie J. Loveridge
  • Patent number: 9853323
    Abstract: A positive electrode for a lithium-ion secondary battery includes a positive electrode particle including a positive active material including a lithium salt, and a coating layer including an amorphous carbonaceous layer on a surface of the positive active material, and a sulfide solid electrolyte contacting the coating layer, wherein the sulfide solid electrolyte includes a solid sulfide.
    Type: Grant
    Filed: October 31, 2014
    Date of Patent: December 26, 2017
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Heidy Visbal, Yuichi Aihara
  • Patent number: 9837681
    Abstract: A small capacity battery for powering electronic devices, such as an e-book reader, is provided. This small capacity battery is designed to produce low area-specific resistance, which maintains usable operating voltages even during periods of high current draw. As a result, a lighter and smaller form-factor battery may provide the same battery capacity as a larger and heavier conventional battery. A user may then be provided with a lightweight and small form-factor electronic device that achieves an extended battery life.
    Type: Grant
    Filed: June 16, 2015
    Date of Patent: December 5, 2017
    Assignee: AMAZON TECHNOLOGIES, INC.
    Inventors: James Robert Lim, Thomas Gang Wang, David Wang, David Tuzman, Poon-Keong Ang, Vidhyananth Ramasamy Venkatasamy
  • Patent number: 9831490
    Abstract: A graphite material for a negative electrode of a lithium-ion secondary battery is provided. A ratio Lc(112)/Lc(006) defined as a ratio of expansion of graphene sheets to sheet displacement ranges from 0.08 to 0.11, both inclusive. A crystallite size Lc(006) calculated from a wide-angle X-ray diffraction line ranges from 30 nm to 40 nm, both inclusive. An average particle size ranges from 3 ?m to 20 ?m, both inclusive.
    Type: Grant
    Filed: June 25, 2013
    Date of Patent: November 28, 2017
    Assignee: MT Carbon Co., Ltd.
    Inventors: Yohei Yagishita, Kohei Yamaguchi, Miwa Katayama, Wataru Oda, Akemi Inami, Yoshiki Kubo, Seiji Okazaki, Akio Sakamoto
  • Patent number: 9780365
    Abstract: Provided are battery electrode structures that maintain high mass loadings (i.e., large amounts per unit area) of high capacity active materials in the electrodes without deteriorating their cycling performance. These mass loading levels correspond to capacities per electrode unit area that are suitable for commercial electrodes even though the active materials are kept thin and generally below their fracture limits. A battery electrode structure may include multiple template layers. An initial template layer may include nanostructures attached to a substrate and have a controlled density. This initial layer may be formed using a controlled thickness source material layer provided, for example, on a substantially inert substrate. Additional one or more template layers are then formed over the initial layer resulting in a multilayer template structure with specific characteristics, such as a surface area, thickness, and porosity.
    Type: Grant
    Filed: October 20, 2011
    Date of Patent: October 3, 2017
    Assignee: Amprius, Inc.
    Inventors: Zuqin Liu, Song Han, Ghyrn E. Loveness
  • Patent number: 9705136
    Abstract: An energy storage device includes a nano-structured cathode. The cathode includes a conductive substrate, an underframe and an active layer. The underframe includes structures such as nano-filaments and/or aerogel. The active layer optionally includes a catalyst disposed within the active layer, the catalyst being configured to catalyze the dissociation of cathode active material.
    Type: Grant
    Filed: February 9, 2014
    Date of Patent: July 11, 2017
    Assignee: Traverse Technologies Corp.
    Inventor: Ronald A. Rojeski
  • Patent number: 9673447
    Abstract: A method of operating a lithium-ion cell comprising (a) a cathode comprising a carbon or graphitic material having a surface area to capture and store lithium thereon; (b) an anode comprising an anode active material; (c) a porous separator disposed between the two electrodes; (d) an electrolyte in ionic contact with the two electrodes; and (e) a lithium source disposed in at least one of the two electrodes to obtain an open circuit voltage (OCV) from 0.5 volts to 2.8 volts when the cell is made; wherein the method comprises: (A) electrochemically forming the cell from the OCV to either a first lower voltage limit (LVL) or a first upper voltage limit (UVL), wherein the first LVL is no lower than 0.1 volts and the first UVL is no higher than 4.6 volts; and (B) cycling the cell between a second LVL and a second UVL.
    Type: Grant
    Filed: April 12, 2012
    Date of Patent: June 6, 2017
    Assignee: Nanotek Instruments, Inc.
    Inventors: Guorong Chen, Yanbo Wang, Qing Fang, Xiqing Wang, Aruna Zhamu, Bor Z. Jang
  • Patent number: 9627709
    Abstract: A method of fabricating a multilayered thin film solid state battery device. The method steps include, but are not limited to, the forming of the following layers: substrate member, a barrier material, a first electrode material, a thickness of cathode material, an electrolyte, an anode material, and a second electrode material. The formation of the barrier material can include forming a polymer material being configured to substantially block a migration of an active metal species to the substrate member, and being characterized by a barrier degrading temperature. The formation of cathode material can include forming a cathode material having an amorphous characteristic, while maintaining a temperature of about ?40 Degrees Celsius to no greater than 500 Degrees Celsius such that a spatial volume is characterized by an external border region of the cathode material. The method can then involve transferring the resulting thin film solid state battery device.
    Type: Grant
    Filed: October 15, 2014
    Date of Patent: April 18, 2017
    Assignee: Sakti3, Inc.
    Inventors: Ann Marie Sastry, Chia-Wei Wang, Yen-Hung Chen, Hyoncheol Kim, Xiang Chun Zhang, Myoundo Chung