Organic Component Is A Binder Patents (Class 429/217)
  • Patent number: 11955642
    Abstract: According to one embodiment, an electrode includes a current collector and an active material-containing layer. The active material-containing layer includes an active material, a conductive agent, and cellulose fiber. The conductive agent includes carbon fiber. The active material-containing layer includes a first surface brought into contact with the current collector, and a second surface. 2000/mm2 or less of first agglomerates are present on the second surface. Each of the first agglomerates includes at least one of the carbon fiber or the cellulose fiber, and does not include the active material. Each of the first agglomerates has a longest diameter of 5 ?m or more and a shortest diameter of 1 ?m or more.
    Type: Grant
    Filed: August 31, 2020
    Date of Patent: April 9, 2024
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Mitsuru Ishibashi, Wen Zhang, Kazuomi Yoshima, Keigo Hoshina, Norio Takami
  • Patent number: 11949107
    Abstract: A binder composition for a secondary battery electrode contains a polymer that includes a nitrile group-containing monomer unit, an aromatic vinyl monomer unit, and a linear alkylene structural unit but does not include a hydrophilic group-containing monomer unit.
    Type: Grant
    Filed: December 12, 2019
    Date of Patent: April 2, 2024
    Assignee: ZEON CORPORATION
    Inventors: Akito Nakai, Naoki Takahashi, Tomoya Murase
  • Patent number: 11936035
    Abstract: Core-shell particles, composite anode material, anodes made therefrom, lithium ion cells and methods are provided, which enable production of fast charging lithium ion batteries. The composite anode material has core-shell particles which are configured to receive and release lithium ions at their cores and to have shells that are configured to allow for core expansion upon lithiation. The cores of the core-shell particles are connected to the respective shells by conductive material such as carbon fibers, which may form a network throughout the anode material and possibly interconnect cores of many core-shell particles to enhance the electrical conductivity of the anode. Ionic conductive material and possibly mechanical elements may be incorporated in the core-shell particles to enhance ionic conductivity and mechanical robustness toward expansion and contraction of the cores during lithiation and de-lithiation.
    Type: Grant
    Filed: December 25, 2017
    Date of Patent: March 19, 2024
    Assignee: STOREDOT LTD.
    Inventors: David Jacob, Sergey Remizov, Nitzan Shadmi, Hani Farran, Daniel Aronov
  • Patent number: 11936037
    Abstract: The present disclosure relates to an anode for a lithium secondary battery and a lithium secondary battery including the same, wherein the anode includes a first anode active material layer formed on at least one surface of the anode current collector, wherein the first anode active material layer contains a mixture of natural graphite and artificial graphite as the anode active material and a first binder; a second anode active material layer formed on the first anode active material layer, wherein the second anode active material layer contains a mixture of artificial graphite and a silicon-based compound as the anode active material and a second binder; and wherein a weight ratio of the first binder and the second binder is 1 to 2:1.
    Type: Grant
    Filed: September 28, 2023
    Date of Patent: March 19, 2024
    Assignee: LG Energy Solution, Ltd.
    Inventors: Dong Hwi Kim, Tae Hee Kim, Nanji Yun, Yojin Kim, Hyunkyung Do
  • Patent number: 11920024
    Abstract: The present invention provides a method that enables the use of an aqueous solution of a copolymer of vinyl alcohol and an alkali metal neutralized product of ethylenically unsaturated carboxylic acid or carboxymethyl cellulose or a salt thereof, as a binder for secondary batteries, without causing a significant viscosity increase even if stored in the state of an aqueous solution. More specifically, the present invention provides a composition in the form of an aqueous solution containing a copolymer of vinyl alcohol and an alkali metal neutralized product of ethylenically unsaturated carboxylic acid and/or carboxymethyl cellulose or a salt thereof, wherein when the viscosity of the composition after being diluted with water (25° C. or less) to a viscosity of 200±100 mPa·s at room temperature (25° C.) and being adjusted to a temperature of 25° C. is defined as Xa1 (Pa·s), and the viscosity of the composition after being placed in an airtight container and being allowed to stand at 95° C.
    Type: Grant
    Filed: December 12, 2018
    Date of Patent: March 5, 2024
    Assignee: SUMITOMO SEIKA CHEMICALS CO., LTD.
    Inventors: Shun Hashimoto, Koji Fujita
  • Patent number: 11881584
    Abstract: A negative electrode active material including natural graphite, wherein a D90/D10, which is the ratio of D90 to D10, is 2.20 or less, a D50 is 6 ?m to 11 ?m, and a BET specific surface area is 2.2 m2/g or less.
    Type: Grant
    Filed: April 2, 2020
    Date of Patent: January 23, 2024
    Assignee: LG ENERGY SOLUTION, LTD.
    Inventors: Li Lin Piao, Je Young Kim, Sang Wook Woo
  • Patent number: 11870092
    Abstract: Energy storage systems, battery cells, and batteries of the present technology may include an abatement system for addressing effluent vapors produced by a cell block. The systems may include support structures configured to address vented effluents, and may include oxidants, catalysts, or entrainment systems to assist with the abatement.
    Type: Grant
    Filed: January 31, 2018
    Date of Patent: January 9, 2024
    Assignee: Apple Inc.
    Inventors: Steven Kaye, Luke Asher Wilhelm, Josef L. Miler, Alexander J. Clarabut
  • Patent number: 11870068
    Abstract: Provided is a secondary battery, specifically, a secondary battery having excellent stability and improved output characteristic and low temperature characteristic by including a cathode active material in which at least one of metals forming the cathode active material has a concentration gradient in at least a portion of a region between a central portion and a surface portion; and a conductive material mixture in which carbon nanotube is mixed with carbon black at an appropriate ratio, the carbon black being a spherical nanoparticle.
    Type: Grant
    Filed: October 19, 2020
    Date of Patent: January 9, 2024
    Assignee: SK ON CO., LTD.
    Inventors: Jin-Sub Lim, Kook-Hyun Han, Duck-Chul Hwang
  • Patent number: 11870058
    Abstract: In an aspect, a method of making a composition, comprising forming a solvent mixture comprising a polymer and a solvent; precipitating the solvent mixture with a non-solvent to form the composition comprising the filler in a fibrillated polymer matrix, wherein the composition is in the form of a particulate and at least one of the solvent and the non-solvent comprises a filler; and separating the composition from the solvent and the non-solvent to isolate the composition. In another aspect, a porous material wherein the filler particles are mechanically bonded together by the polymer and wherein the polymer is present as filaments adhering to and connecting the filler particles across interstitial spaces between the filler particles. In another aspect, a precipitated polymer solution produced by a phase inversion where the majority of the liquids can be mechanically removed.
    Type: Grant
    Filed: May 7, 2019
    Date of Patent: January 9, 2024
    Assignee: TEEBS R&D, LLC
    Inventor: Trevor Beard
  • Patent number: 11862799
    Abstract: An anode active material for a secondary battery that has improved cycle swelling properties and rapid charge performance, an anode comprising same, and a method for manufacturing same. The anode active material is a mixture of artificial graphite and spherical natural graphite, wherein the spherical natural graphite has an average particle diameter (D 50) of 12 ?m or less, with D 90-D 10 value ranging from 5 ?m to 12 ?m.
    Type: Grant
    Filed: December 10, 2019
    Date of Patent: January 2, 2024
    Assignee: LG ENERGY SOLUTION, LTD.
    Inventors: Hee Won Choi, Je Young Kim, Sang Wook Woo, Li Lin Piao
  • Patent number: 11862787
    Abstract: The present invention relates to a negative electrode active material for a lithium-ion battery, containing a Si phase, a Si—Zr compound phase, and a Sn—X compound phase in which X is at least one element selected from the group consisting of Cu, Ti, Co, Fe, Ni, and Zr, the Sn—X compound phase has a proportion of 0.1 mass % to 18 mass % to the whole, and the Si phase has a proportion of 10 mass % to 80 mass % to the whole.
    Type: Grant
    Filed: January 30, 2020
    Date of Patent: January 2, 2024
    Assignee: DAIDO STEEL CO., LTD.
    Inventors: Yuta Kimura, Hiroyuki Miyamoto
  • Patent number: 11848451
    Abstract: An anode for a non-aqueous electrolyte secondary battery includes: an anode current collector; and an anode mixture layer formed on the anode current collector, containing an anode active material, a conductor, a rubber-based binder, and a water-soluble polymer-based binder. The anode mixture layer comprises, relative to a total weight thereof, 1.0-2.5 wt % of the rubber-based binder and 0.5-1.5 wt % of the water-soluble polymer based binder. When the anode mixture layer is divided into ten equal parts in the thickness direction based on the current collector, a ratio (CA/CB) at an interval of 0 to 3 of a content ratio (CA) of the rubber-based binder to a total content of the rubber-based binder to a content ratio (CB) of the water-soluble polymer-based binder to a total content of the water-soluble polymer-based binder is larger than 1.0, and a ratio (CA/CB) at an interval of 7 to 10 is smaller than 1.0.
    Type: Grant
    Filed: January 6, 2022
    Date of Patent: December 19, 2023
    Assignee: SK ON CO., LTD.
    Inventors: Byoung-Wook Jo, Hyun-Joong Jang, Min-Hwan Kim
  • Patent number: 11848450
    Abstract: An anode for a non-aqueous electrolyte secondary battery includes: an anode current collector; and an anode mixture layer formed on the anode current collector, containing an anode active material, a conductor, a rubber-based binder, and a water-soluble polymer-based binder. The anode mixture layer comprises, relative to a total weight thereof, 1.0-2.5 wt % of the rubber-based binder and 0.5-1.5 wt % of the water-soluble polymer based binder. When the anode mixture layer is divided into ten equal parts in the thickness direction based on the current collector, a ratio (CA/CB) at an interval of 0 to 3 of a content ratio (CA) of the rubber-based binder to a total content of the rubber-based binder to a content ratio (CB) of the water-soluble polymer-based binder to a total content of the water-soluble polymer-based binder is larger than 1.0, and a ratio (CA/CB) at an interval of 7 to 10 is smaller than 1.0.
    Type: Grant
    Filed: August 30, 2019
    Date of Patent: December 19, 2023
    Assignee: SK ON CO., LTD.
    Inventors: Byoung-Wook Jo, Hyun-Joong Jang, Min-Hwan Kim
  • Patent number: 11843117
    Abstract: An anode for a non-aqueous electrolyte secondary battery includes: an anode current collector; and an anode mixture layer formed on the anode current collector, containing an anode active material, a conductor, a rubber-based binder, and a water-soluble polymer-based binder. The anode mixture layer comprises, relative to a total weight thereof, 1.0-2.5 wt % of the rubber-based binder and 0.5-1.5 wt % of the water-soluble polymer based binder. When the anode mixture layer is divided into ten equal parts in the thickness direction based on the current collector, a ratio (CA/CB) at an interval of 0 to 3 of a content ratio (CA) of the rubber-based binder to a total content of the rubber-based binder to a content ratio (CB) of the water-soluble polymer-based binder to a total content of the water-soluble polymer-based binder is larger than 1.0, and a ratio (CA/CB) at an interval of 7 to 10 is smaller than 1.0.
    Type: Grant
    Filed: January 6, 2022
    Date of Patent: December 12, 2023
    Assignee: SK ON CO., LTD.
    Inventors: Byoung-Wook Jo, Hyun-Joong Jang, Min-Hwan Kim
  • Patent number: 11824197
    Abstract: An object of the present invention is to provide a composition for a positive electrode having high binding properties and high flexibility. A composition for a positive electrode, comprising: a graft copolymer-based resin; a polyvinylidene fluoride-based resin, wherein the graft copolymer-based resin includes a graft copolymer in which a monomer, having (meth)acrylonitrile as a main component, is graft-copolymerized with a polyvinyl alcohol. The graft copolymer-based resin optionally further includes at least one of a (meth)acrylonitrile-based non-graft polymer and a polyvinyl alcohol homopolymer. And, a slurry for a positive electrode comprising the composition. A positive electrode comprising a metal foil and a coating film of the slurry. The composition preferably has a mass ratio of the graft copolymer-based resin and the polyvinylidene fluoride resin, which is: graft copolymer-based resin/polyvinylidene fluoride-based resin=2/8 to 8/2.
    Type: Grant
    Filed: June 13, 2018
    Date of Patent: November 21, 2023
    Assignee: DENKA COMPANY LIMITED
    Inventors: Takuya Narutomi, Jun Watanabe, Shigeru Suzuki
  • Patent number: 11811055
    Abstract: The present disclosure relates to an anode for a lithium secondary battery and a lithium secondary battery including the same, wherein the anode includes an anode current collector; a first anode active material layer formed on at least one surface of the anode current collector and containing a mixture of natural graphite and artificial graphite in a weight ratio of 13˜34:66˜87 and a first binder as the anode active material; and a second anode active material layer formed on the first anode active material layer and containing a mixture of artificial graphite and a silicon-based compound in a weight ratio of 91˜99:1˜9 and a second binder as the anode active material.
    Type: Grant
    Filed: October 2, 2019
    Date of Patent: November 7, 2023
    Inventors: Dong Hwi Kim, Tae Hee Kim, Nanji Yun, Yojin Kim, Hyunkyung Do
  • Patent number: 11777098
    Abstract: Systems and methods for conductive polymer monomers as cathode additives for silicon-based lithium ion batteries may include a silicon-based anode, an electrolyte, and a cathode. The cathode may include an active material and small amounts of dispersed conductive polymer monomer additive. The cathode active material may include one or more of nickel cobalt aluminum oxide (NCA), nickel cobalt manganese oxide (NCM), lithium iron phosphate (LFP), lithium cobalt oxide (LCO), and lithium manganese oxide (LMO). The conductive polymer monomer additive may any known monomer based on thiophene, aniline, and/or pyrrole core structures alone or in combination. The conductive polymer monomer additive may comprise 5% or less by weight of the active material, or 1% or less by weight of the active material, or 0.5% or less by weight of the active material.
    Type: Grant
    Filed: April 27, 2020
    Date of Patent: October 3, 2023
    Assignee: Enevate Corporation
    Inventors: Liwen Ji, Benjamin Park, Jose Vega
  • Patent number: 11769866
    Abstract: Provided are a binder aqueous solution for a lithium-ion battery, a slurry for a lithium-ion battery negative electrode, a negative electrode for a lithium-ion battery, and a lithium-ion battery. The binder aqueous solution for a lithium-ion battery contains a water-soluble poly(meth)acrylamide (A). The water-soluble poly(meth)acrylamide (A) is a polymer of a monomer group containing, with respect to 100 mol % of the monomer group, 30 mol % to 95 mol % of a (meth)acrylamide group-containing compound (a), and 5 mol % to 40 mol % of an alkoxyalkyl (meth)acrylate (b) represented by the following general formula (1), CH2?C(R1)—CO—O—R2—O—R3??(1) (in which R1 is a hydrogen atom or a methyl group, R2 is an alkylene group having 1 to 4 carbon atoms, R3 is an alkyl group having 1 to 4 carbon atoms, and a total number of carbon atoms of the groups R1, R2 and R3 is 5 or less.
    Type: Grant
    Filed: September 15, 2020
    Date of Patent: September 26, 2023
    Assignee: ARAKAWA CHEMICAL INDUSTRIES, LTD.
    Inventors: Katsuhiko Ikeyatsu, Shinji Ozaki, Hideki Goda
  • Patent number: 11735722
    Abstract: Provided is method of producing graphene-embraced anode particulates for a lithium battery, the method comprising: (A) providing anode active material-decorated carbon or graphite particles, wherein the carbon or graphite particles have a diameter or thickness from 500 nm to 50 ?m and the anode active material, in a form of particles or coating having a diameter or thickness from 0.5 nm to 2 ?m, is bonded to surfaces of the carbon or graphite particles; and (B) embracing the anode active material-decorated carbon or graphite particles with a shell comprising multiple graphene sheets to produce the graphene-embraced anode particulates.
    Type: Grant
    Filed: April 10, 2019
    Date of Patent: August 22, 2023
    Assignee: Global Graphene Group, Inc.
    Inventor: Bor Z. Jang
  • Patent number: 11688844
    Abstract: The present invention provides a solvent-free process for producing foil with a functional coating containing an active material and a meltable polymer, the foil with a functional coating and its use as an electrode foil, electrolyte in solid-state batteries or separator for electrochemical storage. The process comprises scattering a dry powder mixture onto a foil, melting the dry powder mixture, and calendering the foil covered with the molten powder.
    Type: Grant
    Filed: May 21, 2021
    Date of Patent: June 27, 2023
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
    Inventors: Jannes Marten Ophey, Andreas Würsig
  • Patent number: 11631839
    Abstract: An electrode for a solid state battery is provided. The electrode active material layer of the electrode shows improved mechanical properties, such as elasticity or rigidity, of the electrode layer through the crosslinking of a binder resin. Thus, it is possible to inhibit or reduce the effect of swelling and/or shrinking of the electrode active material during charging/discharging. Therefore, the interfacial adhesion between the electrode active material layer and an electrolyte layer and the interfacial adhesion between the electrode active material layer and a current collector are maintained to a high level to provide a solid state battery having excellent cycle characteristics.
    Type: Grant
    Filed: March 22, 2018
    Date of Patent: April 18, 2023
    Assignee: LG ENERGY SOLUTION, LTD.
    Inventors: Sung-Ju Cho, Ho-Suk Shin, Seung-He Woo, Sung-Joong Kang, Hyea-Eun Han
  • Patent number: 11621422
    Abstract: An electrode slurry contains (A) a cellulose fiber, (B) a carboxymethyl-group-containing cellulose ether or a salt thereof, and a particulate material containing at least (C) an electrode active material, and the cellulose fiber (A) has an average fiber length of 1 to 750 ?m. The amount of the carboxymethyl-group-containing cellulose ether or the salt thereof (B) is 0.1 to 3 parts by weight based on 100 parts by weight of the total amount of the cellulose fiber (A), the carboxymethyl-group-containing cellulose ether or the salt thereof (B), and the electrode active material (C), in terms of solid content. The present invention provides an electrode slurry that allows an improved surface smoothness (coating uniformity) of an electrode and an improved coating property, a process for producing the electrode slurry, an electrode, a process for producing the electrode, a non-aqueous secondary battery, and a lithium-ion secondary battery.
    Type: Grant
    Filed: January 10, 2018
    Date of Patent: April 4, 2023
    Assignees: DAICEL CORPORATION, DAICEL FINECHEM LTD.
    Inventors: Masao Iwaya, Shinya Ono, Naoki Doi
  • Patent number: 11616237
    Abstract: A battery plate having a substrate with opposing surfaces and one or more nonplanar structures and one or more active materials disposed on at least one of the opposing surfaces; wherein the battery plate includes one or more of: i) one or more projections disposed within but do not extend beyond the active material; ii) one or more projections which project beyond the active material and substantially free of the active material or dust formed from the active material; and/or iii) a frame about the periphery of the substrate which projects beyond the active material and is substantially free of the active material or dust formed from the active material; and wherein the battery plate is adapted to form part of one or more electrochemical cells in a battery assembly.
    Type: Grant
    Filed: May 18, 2018
    Date of Patent: March 28, 2023
    Assignee: Advanced Battery Concepts, LLC
    Inventors: Edward O. Shaffer, II, Donald Hobday, Brian R. Sturdavant, Jeffrey L. Adkins, Adam V. Cadena
  • Patent number: 11581523
    Abstract: In an embodiment, a Li-ion battery cell comprises an anode electrode with an electrode coating that (1) comprises Si-comprising active material particles, (2) exhibits an areal capacity loading in the range of about 3 mAh/cm2 to about 12 mAh/cm2, (3) exhibits a volumetric capacity in the range from about 600 mAh/cc to about 1800 mAh/cc in a charged state of the cell, (4) comprises conductive additive material particles, and (5) comprises a polymer binder that is configured to bind the Si-comprising active material particles and the conductive additive material particles together to stabilize the anode electrode against volume expansion during the one or more charge-discharge cycles of the battery cell while maintaining the electrical connection between the metal current collector and the Si-comprising active material particles.
    Type: Grant
    Filed: October 18, 2018
    Date of Patent: February 14, 2023
    Assignee: SILA NANOTECHNOLOGIES, INC.
    Inventors: Gleb Yushin, Laura Gerber, Adam Kajdos, Justin Yen, Justin Doane, Jens Steiger
  • Patent number: 11575125
    Abstract: Anodic materials for lithium ions batteries include a current collector and a superlattice disposed on at least a portion of the current collector, the superlattice comprising: alternating layers of an anode active material and an anode inactive material; and a plurality of channels that extend from the current collector through the alternating layers of anode active material and anode inactive material.
    Type: Grant
    Filed: February 5, 2019
    Date of Patent: February 7, 2023
    Assignee: UChicago Argonne, LLC
    Inventors: Zonghai Chen, Khalil Amine, Rachid Amine, Ali Abouimrane, Ozgul Keles, Billur Deniz Karahan, Osman Levent Eryilmaz
  • Patent number: 11552289
    Abstract: The present invention relates to a composite negative electrode material for a secondary battery, and a negative electrode and a lithium secondary battery which include the same, and particularly to a composite negative electrode material for a secondary battery, which includes a graphene sheet, and two or more coating layers formed on both sides of the graphene sheet, wherein the two or more coating layers include at least one polymer coating layer and at least one pitch coating layer, and the graphene sheet and the two or more coating layers are included in a weight ratio of greater than 1:greater than 0.01 to less than 0.1, and a negative electrode and a lithium secondary battery which include the same.
    Type: Grant
    Filed: May 19, 2017
    Date of Patent: January 10, 2023
    Inventors: Su Min Lee, Sun Young Shin, Eun Kyung Kim, Su Yeon Lee, Lilin Piao
  • Patent number: 11545667
    Abstract: Passivation methods and compositions for electrode binders are disclosed. A coated binder particle for use in an electrode film of an energy storage device is provided. The coated binder particle can comprise a coating over the surface of a binder particle, wherein the coating provides ionic insulation to the binder particle. In some embodiments, the coating covers the entire surface of the binder particle. In still further embodiments, a coated binder particle in an energy storage device blocks ionic contact between the binder and an electrolyte.
    Type: Grant
    Filed: March 20, 2018
    Date of Patent: January 3, 2023
    Assignee: Tesla, Inc.
    Inventor: Mohammed-Yazid Saidi
  • Patent number: 11539048
    Abstract: A negative electrode includes at least a negative electrode composite material layer. The negative electrode composite material layer contains at least composite particles and a binder. Each composite particle includes a negative electrode active material particle and a film. The film covers at least part of a surface of the negative electrode active material particle. The film contains a layered silicate mineral. The binder includes nanofibers.
    Type: Grant
    Filed: September 30, 2019
    Date of Patent: December 27, 2022
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yutaka Oyama, Naoto Onodera
  • Patent number: 11532823
    Abstract: The present invention pertains to a flexible electrode, to a process for the manufacture of said flexible electrode and to uses of said flexible electrode in electrochemical devices, in particular in secondary batteries.
    Type: Grant
    Filed: June 13, 2017
    Date of Patent: December 20, 2022
    Assignee: SOLVAY SA
    Inventors: Hélène Rouault, Gaëlle Besnard, Léo Merchat, Jérémie Salomon, Julio A. Abusleme, Marc-David Braida, Christine Hamon
  • Patent number: 11532821
    Abstract: A lithium ion secondary battery includes a positive electrode, a negative electrode, and an electrolyte. The negative electrode has a negative electrode current collector and a negative electrode active material layer provided on the negative electrode current collector. The negative electrode current collector satisfies: (D2/D1)?0.968??(1), D2?21.947*(X/100)?24.643??(2), 110?X?125??(3), and where D1 is a first displacement amount in a first piercing test at a first piercing speed of 0.1 mm/min or more; D2 is a second displacement amount in a second piercing test at a second piercing speed of less than 0.1 mm/min; and X is an expansion coefficient (%) of the negative electrode active material layer.
    Type: Grant
    Filed: March 15, 2019
    Date of Patent: December 20, 2022
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Yoshinori Wakui, Koji Morita, Hirotaka Fukudome
  • Patent number: 11522179
    Abstract: The present invention relates to a negative electrode including a current collector and a negative electrode active material layer disposed on the current collector, wherein the negative electrode active material layer includes a negative electrode active material, carbon black, and a binder, wherein the negative electrode active material includes silicon particles, and the binder includes a copolymer containing a unit derived from a poly(vinylalcohol) (PVA) and a unit derived from an ionized and substituted acrylate, the binder being included in the negative electrode active material layer in an amount of 18 wt % to 22 wt %.
    Type: Grant
    Filed: September 5, 2019
    Date of Patent: December 6, 2022
    Assignee: LG ENERGY SOLUTION, LTD.
    Inventors: Young Jae Kim, Jung Woo Yoo
  • Patent number: 11500732
    Abstract: A system for providing data protection services for user data generated by an application, includes persistent storage for storing user data backups and a manager. The manager is programmed to identify a backup generation event for user data based on a protection policy, in response to identifying the backup generation event, obtain user data associated with the backup generation event from the application, select a calendar of calendars included in the user data, obtain user metadata associated with the calendar, and generate a user data backup using the user data and the user metadata, in which the user data backup comprises calendar events of the calendar and portions of the user metadata associated with the calendar events.
    Type: Grant
    Filed: March 5, 2021
    Date of Patent: November 15, 2022
    Assignee: EMC IP Holding Company LLC
    Inventors: Sunil Yadav, Shelesh Chopra, Amarendra Behera, Tushar Dethe, Himanshu Arora, Jigar Premjibhai Bhanushali, Vipin Kumar Kaushal, Sapna Chauhan, Anjana Rao, Deependra Pratap Singh
  • Patent number: 11495780
    Abstract: The present invention relates to a method of preparing an electrode for a lithium secondary battery and an electrode for a lithium secondary battery prepared thereby, wherein, since the method may suppress the migration of a binder and may uniformly control the distribution of the binder in the electrode by forming a plurality of negative electrode active material layers and allowing a drying condition of each of the negative electrode active material layers to be different, the method may improve life characteristics by improving adhesion between a negative electrode active material and a current collector and may improve charging characteristics by reducing interfacial resistance of the negative electrode.
    Type: Grant
    Filed: July 7, 2017
    Date of Patent: November 8, 2022
    Inventors: Sol Nip Lee, Young Geun Choi, Song Taek Oh
  • Patent number: 11495829
    Abstract: A solid electrolyte interface is formed on a silicon monoxide electrode in a battery cell. While the solid electrolyte interface is being formed on the silicon monoxide electrode, the battery cell is charged for one or more initial cycles.
    Type: Grant
    Filed: September 30, 2019
    Date of Patent: November 8, 2022
    Assignee: Wisk Aero LLC
    Inventors: Chen Li, Patrick K. Herring
  • Patent number: 11462773
    Abstract: A secondary battery positive electrode is provided with: a positive electrode current collector; a positive electrode mixture layer; and an intermediate layer disposed between the positive electrode current collector and the positive electrode mixture layer. The intermediate layer comprises first particles configured from an electrically conductive material, and second particles which are configured from an insulating inorganic material and have an average grain size greater than an average grain size of the first particles. The volume ratio of the first particles in the intermediate layer is not less than 25% and less than 70%. The volume ratio of the second particles in the intermediate layer is not less than 30% and less than 75%. The density of the intermediate layer is greater than 1 g/cm3 and not more than 2.5 g/cm3.
    Type: Grant
    Filed: October 22, 2019
    Date of Patent: October 4, 2022
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Yuji Oura, Tomoki Shiozaki, Hideharu Takezawa, Takahito Nakayama, Takahiro Takahashi, Daisuke Furusawa
  • Patent number: 11462737
    Abstract: A binder composition for a non-aqueous secondary battery electrode contains a water-soluble polymer including, in a proportion of at least 0.1 mass % and not more than 20 mass %, a monomer unit derived from a monomer represented by general formula (1): CH2?C(R1) —C?O—NH—R2—OH (R1 is hydrogen or an alkyl group and R2 is (CHR3)n(O(CHR3)m)l[n=1 to 10; m=1 to 4; 1=0 to 3; and R3 is hydrogen or an alkyl group having a carbon number of 1 to 4]).
    Type: Grant
    Filed: September 23, 2016
    Date of Patent: October 4, 2022
    Assignee: ZEON CORPORATION
    Inventors: Kenya Sonobe, Yusuke Adachi
  • Patent number: 11462729
    Abstract: Embodiments related to electrodes comprising composite mixtures and related devices (e.g., convection batteries), systems, and methods are disclosed.
    Type: Grant
    Filed: April 12, 2019
    Date of Patent: October 4, 2022
    Assignee: Massachusetts Institute of Technology
    Inventors: Thomas J. Carney, Fikile Richard Brushett
  • Patent number: 11450876
    Abstract: A porous electrode for electrochemical cells, methods of making the same and its application are described. The porous electrode is comprised of a porous conductive layer and an insulating layer, whereas the pores inside the conductive layer function as mini-containers for the active metal for rechargeable batteries, and the insulating material covers the top conductive surface of the conductive layer and blocks the sites where active metal dendrite would otherwise preferentially grow. An example of such electrodes is a porous copper foil with top surface coated with polyvinylene difluoride (PVDF). Electrochemical cells containing the invented electrode, such as rechargeable lithium batteries, sodium batteries and aluminum batteries, have good cycle life and safety performance.
    Type: Grant
    Filed: September 29, 2017
    Date of Patent: September 20, 2022
    Inventor: Wentao Li
  • Patent number: 11430973
    Abstract: The present invention provides a viscous adhesive capable of retaining the shape of an electrode and allowing for production of an electrode for a lithium-ion battery having a structure in which the energy density of the electrode does not decrease. The present invention relates to a viscous adhesive for a lithium-ion electrode which allows active materials to adhere to each other in a lithium-ion electrode, the viscous adhesive having a glass transition temperature of 60° C. or lower, a solubility parameter of 8 to 13 (cal/cm3)1/2, and a storage shear modulus and a loss shear modulus of 2.0×103 to 5.0×107 Pa as measured in a frequency range of 10?1 to 101 Hz at 20° C.
    Type: Grant
    Filed: April 20, 2018
    Date of Patent: August 30, 2022
    Assignee: SANYO CHEMICAL INDUSTRIES, LTD.
    Inventors: Tomoya Ohta, Kotaro Nasu, Kenichi Kawakita, Takuya Suenaga, Yusuke Mori, Yasuhiko Ohsawa, Yuki Kusachi, Hajime Satou, Hiroshi Akama, Hideaki Horie
  • Patent number: 11424435
    Abstract: The development of a novel battery comprising of high-oxidation-state periodate complex cathode and zinc anode is disclosed. A periodate complex H7Fe4(IO4)3O8 was prepared by a precipitation reaction between Fe(NO3)3 and NaIO4, and was used in battery development for the first time. NaMnIO6 double periodate salts were also synthesized from MnSO4 and NaIO4 using the same techniques. The H7Fe4(IO4)3O8 alone showed specific capacity of 300 mAh g?1; while NaMnIO6 showed specific capacity as high as 750 mAh g?1. Compared to single-electron processes in conventional cathode reactions, the possibility to significantly enhance cathode specific capacity via a multi-electron process associated with valence change from I(VII) to I2 is demonstrated. Novel 3D-printed reserve battery casing designs comprising replaceable electrodes also disclosed. Batteries featuring an ion-exchange membrane dual-electrolyte design are disclosed. Periodate based dry cell batteries utilizing polymer electrolytes are also disclosed.
    Type: Grant
    Filed: May 8, 2020
    Date of Patent: August 23, 2022
    Assignee: New Jersey Institute of Technology
    Inventors: Somenath Mitra, Zhiqian Wang
  • Patent number: 11424437
    Abstract: A negative electrode for a non-aqueous electrolyte secondary battery is provided. The negative electrode includes at least a negative electrode active material. The negative electrode active material includes a first type of silicon oxide particles and a second type of silicon oxide particles. The first type of silicon oxide particles has not been pre-doped with lithium. The second type of silicon oxide particles has been pre-doped with lithium. The first type of silicon oxide particles has a first average particle size. The second type of silicon oxide particles has a second average particle size. The ratio of the second average particle size to the first average particle size is not lower than 1.5 and not higher than 11.2.
    Type: Grant
    Filed: July 9, 2019
    Date of Patent: August 23, 2022
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Ryosuke Ohsawa, Akira Tsujiko, Kaoru Inoue
  • Patent number: 11404695
    Abstract: A binder composition contains a water-soluble polymer and water. The water-soluble polymer includes a nitrile group-containing monomer unit and an ethylenically unsaturated carboxylic acid monomer unit, and has a weight-average molecular weight of not less than 1,000 and not more than 50,000.
    Type: Grant
    Filed: June 14, 2018
    Date of Patent: August 2, 2022
    Assignee: ZEON CORPORATION
    Inventor: Junichi Asano
  • Patent number: 11393608
    Abstract: The present invention relates to a fabric material-based flexible electrode and a manufacturing method thereof, and a fabric material-based flexible electrode according to the present invention comprises: a substrate (10) including multiple fibers (11) crossing each other; a bonding layer (20), on the substrate (10), including an amine group (NH2)-containing monomolecular substance adsorbed thereon; a nanoparticle layer (30), on the bonding layer (20), having metallic nanoparticles (31) coated thereon; and a plating layer (40), on the nanoparticle layer (30), having a predetermined metal electroplated thereon.
    Type: Grant
    Filed: August 14, 2018
    Date of Patent: July 19, 2022
    Assignee: Korea University Research and Business Foundation
    Inventors: Jinhan Cho, Seung-Hui Woo, Donghyeon Nam
  • Patent number: 11394021
    Abstract: A negative active material and a rechargeable lithium battery, the negative active material including a silicon-carbon composite, the silicon-carbon composite including crystalline carbon; amorphous carbon; and silicon nanoparticles having a needle shape, a flake shape, a sheet shape, or a combination thereof, wherein the silicon nanoparticles have a D50 particle diameter of 5 nm to 150 nm and an aspect ratio of 4 to 10.
    Type: Grant
    Filed: April 4, 2019
    Date of Patent: July 19, 2022
    Assignee: SAMSUNG SDI CO., LTD.
    Inventors: Changsu Shin, Yongseok Kim, Jaehou Nah
  • Patent number: 11387447
    Abstract: A silicon negative electrode sheet includes: a current collector; and at least two active coatings containing negative active materials, which are sequentially coated on the current collector. Through holes are formed on the active coating along the thickness direction and are arranged at intervals. The liquid holding capacity of the silicon negative electrode sheet and the charging capacity of a silicon negative electrode can be improved.
    Type: Grant
    Filed: January 17, 2020
    Date of Patent: July 12, 2022
    Assignee: BEIJING XIAOMI MOBILE SOFTWARE CO., LTD.
    Inventors: Sihong Du, Zongqiang Wang
  • Patent number: 11380899
    Abstract: The present invention relates to a method for preparing a positive electrode, comprising preparing a mixture by dry mixing a positive electrode active material, a dry conductive material, and a dry binder, applying high shear force to the mixture, disposing the mixture on a current collector, and rolling the current collector on which the mixture is disposed, wherein the dry conductive material is at least any one of a carbon nanotube and a carbon fiber, and the high 10 shear force is 100 N to 500 N.
    Type: Grant
    Filed: April 27, 2018
    Date of Patent: July 5, 2022
    Assignee: LG ENERGY SOLUTION, LTD.
    Inventors: Chang Wan Koo, Sang Hoon Choy
  • Patent number: 11374218
    Abstract: A negative electroactive material for use in a negative electrode of an electrochemical cell that cycles lithium ions is provided. The negative electroactive material includes a particle defining a core region that includes silicon, silicon-containing alloys, tin-containing alloys, and combinations thereof. A porous, elastomeric multilayer coating is disposed on a surface of the core region that includes a first carbonaceous layer and a second porous elastomeric layer. The second porous elastomeric layer includes siloxane and a plurality of electrically conductive particles. The multilayer coating is capable of reversibly elongating from a contracted state to an expanded state in at least one direction to minimize or prevent fracturing of the plurality of negative electroactive material particles during lithium ion cycling.
    Type: Grant
    Filed: August 21, 2019
    Date of Patent: June 28, 2022
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Meng Jiang, Lei Wang, Raghunathan K
  • Patent number: 11374256
    Abstract: A method for producing an all solid state battery in which an anode foil, an anode layer, a solid electrolyte layer, and a cathode layer are layered in this order, and an area of the solid electrolyte layer and the anode layer is larger than an area of the cathode layer is disclosed. The method includes a first pressing step of roll-pressing a first layered body so an adhesive force between the anode foil and the anode layer becomes 30 N/cm2 or more, to form a second layered body; a layered body forming step of forming a third layered body comprising the anode foil, the anode layer, the solid electrolyte layer, and the cathode layer, using the second layered body; and a second pressing step of roll-pressing the third layered body with a linear pressure of 1.0 t/cm or more to form a forth layered body.
    Type: Grant
    Filed: March 5, 2019
    Date of Patent: June 28, 2022
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kengo Haga, Hideki Asadachi
  • Patent number: 11329269
    Abstract: This application relates to a battery comprising a positive electrode plate, a separator, and a negative electrode plate, wherein the positive electrode plate comprises a positive electrode current collector and at least two layers of positive active material coated on at least one surface of the positive electrode current collector, and wherein an underlying positive active material layer in contact with the positive electrode current collector comprises a first positive active material, a first polymer material and a first conductive material; and wherein an upper positive active material layer in contact with the underlying positive active material layer and away from the positive electrode current collector comprises a second positive active material, a second polymer material and a second conductive material, and the first polymer material comprises fluorinated polyolefin and/or chlorinated polyolefin polymer material. The battery has good safety and improved electrical properties.
    Type: Grant
    Filed: May 28, 2019
    Date of Patent: May 10, 2022
    Assignee: Contemporary Amperex Technology Co., Limited
    Inventors: Yuqun Zeng, Yongshou Lin, Zhenhua Li, Haizu Jin, Xiaowen Zhang
  • Patent number: 11329286
    Abstract: A lithium cobalt-based positive electrode active material is provide, which includes sodium and calcium, wherein the total amount of the sodium and calcium is 150 ppm to 500 ppm based on the total weight of the lithium cobalt-based positive electrode active material. A method for preparing the lithium cobalt-based positive electrode active material is also provided.
    Type: Grant
    Filed: December 10, 2018
    Date of Patent: May 10, 2022
    Inventors: Sung Bin Park, Min Kyu You, Chi Ho Jo, Hyuck Hur, Jin Tae Hwang, Wang Mo Jung