Grid Or Holder For Active Material Patents (Class 429/233)
  • Patent number: 11205779
    Abstract: An electrode for a lithium secondary battery including a protective layer, and a lithium secondary battery including the same. The protective layer contains a thermally conductive material. The electrode for the lithium secondary battery maintains uniform heat distribution on a surface of the electrode during charging and discharging, so that lithium dendrites grow uniformly on the surface. Accordingly, the electrode does not cause a problem of an increase in contact area between the electrode and an electrolyte by the non-uniform growth of the lithium dendrites, or a problem of peeling of the protective layer, thereby improving stability and lifetime characteristics when applied to the battery.
    Type: Grant
    Filed: July 30, 2018
    Date of Patent: December 21, 2021
    Assignee: LG CHEM, LTD.
    Inventor: Hyunwoong Yun
  • Patent number: 11171323
    Abstract: The present invention provides a lithium metal powder protected by a substantially continuous layer of a polymer. Such a substantially continuous polymer layer provides improved protection such as compared to typical CO2-passivation.
    Type: Grant
    Filed: May 9, 2018
    Date of Patent: November 9, 2021
    Assignee: FMC LITHIUM USA CORP.
    Inventors: Marina Yakovleva, Yuan Gao, Kenneth Brian Fitch, Prakash Thyaga Palepu, Yangxing Li, Christopher Jay Woltermann
  • Patent number: 11069899
    Abstract: The present invention relates to a negative electrode for a secondary battery. The negative electrode for the secondary battery according to an embodiment of the present invention comprises a negative electrode collector and a negative electrode active material integrated with at least a portion of a surface of the negative electrode collector, wherein the negative electrode collector has a plurality of delamination prevention current collection grooves with which the negative electrode active material is integrated, and the negative electrode active material is disposed on an inner surface of each of the delamination prevention current collection grooves so that a space part in which a passivation layer is formed is defined during charging and discharging.
    Type: Grant
    Filed: October 13, 2017
    Date of Patent: July 20, 2021
    Assignee: LG CHEM, LTD.
    Inventors: Jin Hyun Cho, Hyun Woong Yun
  • Patent number: 11069900
    Abstract: The present disclosure relates to a positive electrode for lithium air batteries, a method of manufacturing the positive electrode, and a lithium air battery including the positive electrode, and more particularly to a positive electrode for lithium air batteries, wherein the positive electrode is manufactured through a dry process instead of a conventional wet process and a mixture of a positive electrode active material and a binder is ball-milled under specific conditions, thereby reducing or preventing a swelling phenomenon due to a solvent and increasing the force of coupling between the positive electrode active material and the binder, whereby it is possible to manufacture a high-density electrode and to improve the durability of the electrode, and wherein the lifespan of a lithium air battery is increased when the positive electrode is applied to the battery.
    Type: Grant
    Filed: June 6, 2019
    Date of Patent: July 20, 2021
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventors: Dae Gun Jin, Eun Ji Kwon, Jee Youn Hwang, Ji Hoon Jang, Gwang Seok Oh, Won Keun Kim, Samuel Seo
  • Patent number: 11043719
    Abstract: A thin film solid state battery configured with barrier regions formed on a flexible substrate member and method. The method includes forming a bottom thin film barrier material overlying and directly contacting a surface region of a substrate. A first current collector region can be formed overlying the bottom barrier material and forming a first cathode material overlying the first current collector region. A first electrolyte can be formed overlying the first cathode material, and a second current collector region can be formed overlying the first anode material. The method also includes forming an intermediary thin film barrier material overlying the second current collector region and forming a top thin film barrier material overlying the second electrochemical cell. The solid state battery can comprise the elements described in the method of fabrication.
    Type: Grant
    Filed: November 12, 2014
    Date of Patent: June 22, 2021
    Assignee: Sakti3, Inc.
    Inventors: Hyoncheol Kim, Marc Langlois, Myoungdo Chung, Ann Marie Sastry, Yen-Hung Chen, Stephen Buckingham
  • Patent number: 11031584
    Abstract: A lithium secondary battery includes: a positive electrode; a negative electrode; a separator disposed between the positive electrode and the negative electrode; and a nonaqueous electrolyte solution filled between the positive electrode and the negative electrode. The negative electrode includes: an electrically conductive layer having a surface; and lithium metal pieces arranged spaced from each other on the surface of the electrically conductive layer. There is no lithium metal on an imaginary line extending from a first end to a second end opposite to the first end of the surface of the electrically conductive layer and traversing a space between the lithium metal pieces.
    Type: Grant
    Filed: April 26, 2018
    Date of Patent: June 8, 2021
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Tooru Matsui, Junichi Sakamoto, Kazuko Asano, Akira Kano, Kensuke Nakura
  • Patent number: 11024867
    Abstract: A battery is provided which includes a first power generating element, a second power generating element, and a first adhesion layer adhering the first power generating element to the second power generating element. A first positive electrode collector of the first power generating element and a second negative electrode collector of the second power generating element face each other with (i.e., via) the first adhesion layer. Between the first positive electrode collector and the second negative electrode collector, the first adhesion layer is disposed in a region forming a first positive electrode active material layer or a region forming a second negative electrode active material layer, whichever is smaller. The first positive electrode collector and the second negative electrode collector are not in contact with each other in a region in which the first positive electrode active material layer and the second negative electrode active material layer face each other.
    Type: Grant
    Filed: April 10, 2019
    Date of Patent: June 1, 2021
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventor: Kazuyoshi Honda
  • Patent number: 11011805
    Abstract: Some examples include an electrode for an electrochemical cell including a plate portion and a tab portion. The plate portion includes a plate body, a perimeter body edge, and an inset area recessed into the plate body from the perimeter body edge. The inset area is defined by an inset edge. The tab portion extends from the plate portion. The tab portion includes a tab body and tab body edge. The inset edge extends between the perimeter body edge and the tab body edge.
    Type: Grant
    Filed: March 28, 2019
    Date of Patent: May 18, 2021
    Assignee: Medtronic, Inc.
    Inventors: Erik J. Hovland, Steve Bruesehoff
  • Patent number: 11005094
    Abstract: Provided is a lithium battery anode electrode comprising multiple particulates of an anode active material, wherein at least a particulate is composed of one or a plurality of particles of an anode active material being encapsulated by a thin layer of inorganic filler-reinforced elastomer having from 0.01% to 50% by weight of an inorganic filler dispersed in an elastomeric matrix material based on the total weight of the inorganic filler-reinforced elastomer, wherein the encapsulating thin layer of inorganic filler-reinforced elastomer has a thickness from 1 nm to 10 ?m, a fully recoverable tensile strain from 2% to 500%, and a lithium ion conductivity from 10?7 to S/cm to 5×10?2 S/cm and the inorganic filler has a lithium intercalation potential from 1.1 V to 4.5 V (preferably 1.2-2.5 V) versus Li/Li+. The anode active material is preferably selected from Si, Ge, Sn, SnO2, SiOx, Co3O4, Mn3O4, etc.
    Type: Grant
    Filed: March 7, 2018
    Date of Patent: May 11, 2021
    Assignee: Global Graphene Group, Inc.
    Inventors: Baofei Pan, Hui He, Aruna Zhamu, Bor Z. Jang
  • Patent number: 10930977
    Abstract: An electrochemical device including: a positive electrode current collector; a plurality of positive electrodes disposed on the positive electrode current collector; an electrolyte layer disposed on the plurality of positive electrodes; a negative electrode disposed on the electrolyte layer; and a negative electrode current collector disposed on the negative electrode, wherein the electrolyte layer includes a first electrolyte layer and a second electrolyte layer, and wherein the second electrolyte layer is between the first electrolyte layer and the negative electrode.
    Type: Grant
    Filed: July 31, 2018
    Date of Patent: February 23, 2021
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Sungjin Lim, Huisu Jeong, Kyounghwan Kim, Hwiyeol Park, Jeongkuk Shon, Wooyoung Yang, Jaemyung Lee, Junhyeong Lee, Jin S. Heo
  • Patent number: 10923728
    Abstract: Energy storage devices, battery cells, and batteries of the present technology include a current collector including a polymer film coupled with a plurality of wires of a metal-containing material. The current collector may include a first region and a second region. The first region may be characterized by an extension of the metal-containing material. The polymer film may be contained within the second region of the current collector. Additionally, the plurality of wires may extend from the extension of the metal-containing material along the polymer film.
    Type: Grant
    Filed: June 13, 2018
    Date of Patent: February 16, 2021
    Inventor: Qingcheng Zeng
  • Patent number: 10826065
    Abstract: A protection layer is formed on a highly-reactive substantially-pure metal anode to a thickness of between 1 nm and 200 nm, inclusive, using atomic layer deposition (ALD). The ALD protection layer allows the conduction of ions of the metal of the anode therethrough but suppresses electron transport therethrough. The ALD protection layer may also be effective to inhibit passage of air and/or water therethrough. The ALD protection layer can allow more relaxed purity requirements for subsequent battery assembly, electrolyte specifications, and/or cathode gas purity. Fabrication methods for the protection layers, protected metal anodes, and systems and devices incorporating such protected metal anodes are also disclosed herein.
    Type: Grant
    Filed: October 5, 2015
    Date of Patent: November 3, 2020
    Assignee: University of Maryland, College Park
    Inventors: Alexander C. Kozen, Marshall A. Schroeder, Gary W. Rubloff, Liangbing Hu, Malakhi Noked, Sang Bok Lee
  • Patent number: 10777332
    Abstract: The present invention proposes an electrode thin film and a method for manufacturing the electrode thin film. The method includes: determining a height between a first roller and a substrate and a coating speed for the first roller coating a first metal nanowire suspension liquid onto the substrate based on a suspension property of the first metal nanowire suspension liquid; coating, by using the first roller, the first metal nanowire suspension liquid onto the substrate with the coating speed to form a wetting film on the substrate; and controlling a first temperature of the substrate heating the wetting film based on the suspension property of the first metal nanowire suspension liquid to dry the wetting film as the electrode thin film. The first temperature makes a dewetting speed of the wetting film higher than a drying speed of the wetting film.
    Type: Grant
    Filed: October 15, 2017
    Date of Patent: September 15, 2020
    Assignee: NATIONAL TSING HUA UNIVERSITY
    Inventors: Tong-Miin Liou, Chien-Chong Hong, Yan-Ren Chen
  • Patent number: 10748716
    Abstract: Provided is a nonaqueous lithium-type power storage element in which a lithium compound is included in positive electrode, wherein energy loss due to voltage decrease under high temperatures and high voltages is reduced, and the high-load charge and discharge cycle characteristics are exceptional.
    Type: Grant
    Filed: April 8, 2019
    Date of Patent: August 18, 2020
    Assignee: Asahi Kasei Kabushiki Kaisha
    Inventors: Kazuteru Umetsu, Yuichiro Hirakawa, Yuima Kimura, Hitoshi Morita, Nobuhiro Okada
  • Patent number: 10734642
    Abstract: Provided is an anode active material layer for a lithium battery. This layer comprises multiple particulates of an anode active material, wherein at least a particulate is composed of one or a plurality of particles of a high-capacity anode active material being encapsulated by a thin layer of elastomeric material that has a lithium ion conductivity no less than 10?7 S/cm (preferably no less than 10?5 S/cm) at room temperature and an encapsulating shell thickness from 1 nm to 10 ?m, and wherein the high-capacity anode active material (e.g. Si, Ge, Sn, SnO2, Co3O4, etc.) has a specific capacity of lithium storage greater than 372 mAh/g (the theoretical lithium storage limit of graphite).
    Type: Grant
    Filed: March 30, 2016
    Date of Patent: August 4, 2020
    Assignee: Global Graphene Group, Inc.
    Inventors: Aruna Zhamu, Bor Z Jang
  • Patent number: 10714782
    Abstract: A cell stack device in the present disclosure includes a cell stack including a plurality of arranged cells, and a first manifold configured to fix a first end of each of the cells with a sealing material and supply reactive gas to the cells. The first manifold includes a frame body configured to fix the first end of each of the cells with the sealing material inside the frame body, and a plate body bonded to a first end portion of the frame body and having a rigidity lower than that of the frame body. A module in the present disclosure includes a housing and the cell stack device housed in the housing. Furthermore, a module housing device in the present disclosure includes an external casing, the module in the external casing, and an auxiliary device configured to operate the module in the external casing.
    Type: Grant
    Filed: March 24, 2016
    Date of Patent: July 14, 2020
    Assignee: KYOCERA Corporation
    Inventors: Tatsuhiro Mure, Shinpei Shiraishi, Kazunari Sugihara, Mitsuhiro Nakamura
  • Patent number: 10707532
    Abstract: Provided is a composition for an adhesive layer of a non-aqueous secondary battery allowing formation of an adhesive layer that can achieve both high process adhesiveness and high blocking resistance in battery members such as an electrode and a separator. The presently disclosed composition for an adhesive layer of a non-aqueous secondary battery includes a particulate polymer A that has a glass-transition temperature of no higher than 20° C. and a volume-average particle diameter of at least 100 nm and less than 450 nm, and a particulate polymer B that has a glass-transition temperature of at least 30° C. and less than 60° C. and a volume-average particle diameter larger than the volume-average particle diameter of the particulate polymer A.
    Type: Grant
    Filed: October 7, 2016
    Date of Patent: July 7, 2020
    Assignee: ZEON CORPORATION
    Inventors: Yutaka Maruhashi, Junnosuke Akiike
  • Patent number: 10601034
    Abstract: A method of producing a powder mass for a lithium battery, the method comprising: (a) Providing a solution containing a sulfonated elastomer dissolved in a solvent or a precursor in a liquid form or dissolved in a solvent; (b) dispersing a plurality of particles of an anode active material in the solution to form a slurry; and (c) dispensing the slurry and removing the solvent and/or polymerizing/curing the precursor to form the powder mass, wherein the powder mass comprises multiple particulates and at least a particulate is composed of one or a plurality of particles of an anode active material being encapsulated by a thin layer of sulfonated elastomer having a thickness from 1 nm to 10 ?m, a fully recoverable tensile strain from 2% to 800%, and a lithium ion conductivity from 10?7 S/cm to 5×10?2 S/cm at room temperature.
    Type: Grant
    Filed: February 27, 2018
    Date of Patent: March 24, 2020
    Assignee: Global Graphene Group, Inc.
    Inventors: Aruna Zhamu, Bor Z. Jang
  • Patent number: 10586925
    Abstract: Provided is a release film to be in contact with a surface of a base member and a surface of an object between the surface of the base member and the surface of the object. The release film includes a crystalline layer and a debond layer in contact with the crystalline layer. The debond layer has pores and includes an amorphous substance soluble in a solvent.
    Type: Grant
    Filed: April 16, 2018
    Date of Patent: March 10, 2020
    Assignee: TIANMA MICROELECTRONICS CO., LTD.
    Inventors: Takumi Usukura, Mamoru Okamoto
  • Patent number: 10573894
    Abstract: Provided is an anode active material layer for a lithium battery. This layer comprises multiple particulates of an anode active material, wherein at least a particulate is composed of one or a plurality of particles of a high-capacity anode active material being encapsulated by a thin layer of elastomeric material that has a lithium ion conductivity no less than 10?7 S/cm (preferably no less than 10?5 S/cm) at room temperature and an encapsulating shell thickness from 1 nm to 10 ?m, and wherein the high-capacity anode active material (e.g. Si, Ge, Sn, SnO2, Co3O4, etc.) has a specific capacity of lithium storage greater than 372 mAh/g (the theoretical lithium storage limit of graphite).
    Type: Grant
    Filed: February 21, 2018
    Date of Patent: February 25, 2020
    Assignee: Global Graphene Group, Inc.
    Inventors: Aruna Zhamu, Bor Z. Jang
  • Patent number: 10504663
    Abstract: An electrochemical device has a positive electrode, a negative electrode, separators, and an electrolyte. The negative electrode has: a negative-electrode collector having a first principal face and a second principal face on the opposite side of the first principal face; a first negative-electrode active-material layer formed on the first principal face; and a second negative-electrode active-material layer which is formed intermittently on the second principal face and whose density of negative-electrode active material is lower than that of the first negative-electrode active-material layer. In the electrolyte, the positive electrode, negative electrode, and separators are immersed. The electrochemical device is such that the first and second negative-electrode active-material layers are pre-doped with lithium ions as a metallic lithium is electrically connected to the second principal face where the second negative-electrode active-material layer is not formed, and then immersed in the electrolyte.
    Type: Grant
    Filed: March 26, 2018
    Date of Patent: December 10, 2019
    Assignee: TAIYO YUDEN CO., LTD.
    Inventors: Yuki Kawai, Koji Kano
  • Patent number: 10497927
    Abstract: A method of making a negative electrode for an electrochemical cell includes applying a fluoropolymer via a deposition process to one or more surface regions of an electroactive material. The electroactive material may be selected from the group consisting of: lithium metal, silicon metal, silicon-containing alloys, and combinations thereof. The fluoropolymer reacts with lithium to form a composite surface layer on the one or more surface regions that comprises an organic matrix material having lithium fluoride particles distributed therein. Electrochemical cells including such negative electrode are also provided.
    Type: Grant
    Filed: August 31, 2017
    Date of Patent: December 3, 2019
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventor: Xingcheng Xiao
  • Patent number: 10454091
    Abstract: A rechargeable battery includes a wound electrode assembly including a separator between a first electrode and a second electrode, the first and second electrodes each including uncoated regions and coated regions; a case accommodating the electrode assembly; and a first electrode terminal and a second electrode terminal respectively coupled to the first and second electrodes and extending from the case, an uncoated region of the first electrode including inner and outer uncoated regions of a terminal end portion located at an outermost side of the electrode assembly, and the second electrode including an outer uncoated region of a terminal end portion facing the inner uncoated region of the first electrode and an additional inner coated region at an opposite side of the outer uncoated region.
    Type: Grant
    Filed: October 29, 2015
    Date of Patent: October 22, 2019
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Seung-Hee Park, Jea-Woan Lee, Chan Hong, Se-Ho Park, Soo-Mi Eo, Young-Kwang Cho, Yi-Seop Ahn, Yu-Mi Ha
  • Patent number: 10453622
    Abstract: A method for producing an electrode for an energy storage device includes: forming a current collector from a conductive material; forming a primer layer on the current collector; injecting dry powder electrode materials into the primer layer, wherein the dry powder electrode materials injected into the primer layer form an electrode film in electrical contact with the current collector.
    Type: Grant
    Filed: March 14, 2017
    Date of Patent: October 22, 2019
    Assignee: LiCAP Technologies, Inc.
    Inventors: Linda Zhong, Martin Matthew Zea, Kathleen Jingling Qiu
  • Patent number: 10411236
    Abstract: Embodiments of the invention provide methods and apparatuses for enhancing electron flow within a battery, such as a lead-acid battery. In one embodiment, a battery separator may include a conductive surface or layer upon which electrons may flow. The battery separator may include a fiber mat that includes a plurality of electrically insulative fibers. The battery separator may be positioned between electrodes of the battery to electrically insulate the electrodes. The battery separator may also include a conductive material disposed on at least one surface of the fiber mat. The conductive material may contact an electrode of the battery and may have an electrical conductivity that enables electron flow on the surface of the fiber mat.
    Type: Grant
    Filed: April 12, 2012
    Date of Patent: September 10, 2019
    Assignee: Johns Manville
    Inventors: Souvik Nandi, Zhihua Guo, Jawed Asrar, Albert G. Dietz, III
  • Patent number: 10388963
    Abstract: A lithium ion battery electrode includes an electrode material layer. The lithium ion battery electrode further includes a current collector. The current collector is located on a surface of the electrode material layer. The current collector is a carbon nanotube layer. The carbon nanotube layer consists of a number of carbon nanotubes.
    Type: Grant
    Filed: August 11, 2016
    Date of Patent: August 20, 2019
    Assignees: Tsinghua University, HON HAI PRECISION INDUSTRY CO., LTD.
    Inventors: Jia-Ping Wang, Ke Wang, Kai-Li Jiang, Shou-Shan Fan
  • Patent number: 10347918
    Abstract: A surface-treated cathode active material useful for manufacturing a lithium secondary battery have excellent output characteristics by performing a double coating with metal oxide and an electron and ion conductive polymerized copolymer on a surface of a cathode active material for a lithium secondary battery to enhance electrochemical properties and thermal stability of the cathode active material.
    Type: Grant
    Filed: November 7, 2014
    Date of Patent: July 9, 2019
    Assignees: HYUNDAI MOTOR COMPANY, IUCF-HYU (INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIV.)
    Inventors: Kyo Min Shin, Sa Heum Kim, Dong Gun Kim, Yun Chae Jung, Dong Won Kim, Ik Su Kang, Yoon Sung Lee
  • Patent number: 10338144
    Abstract: According to an embodiment, a calculation apparatus includes a first calculator, a second calculator and a third calculator. The first calculator performs a regression analysis to calculate internal state parameters including a quantity of active material and an initial charged capacity of at least the first electrode. The second calculator calculates, based on the internal state parameters, an upper limit charged capacity in a predetermined range based a charged capacity at which an open circuit voltage of the rechargeable battery reaches an upper limit voltage. The third calculator changes the quantity of active material of the first electrode to a fixed value, and recalculates the initial charged capacity of the first electrode used on the fixed value and the upper limit charged capacity.
    Type: Grant
    Filed: February 6, 2015
    Date of Patent: July 2, 2019
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Nobukatsu Sugiyama, Ena Ishii, Tomokazu Morita, Mitsunobu Yoshida
  • Patent number: 10319993
    Abstract: Gas evolution during the high-temperature storage of a non-aqueous electrolyte secondary battery is suppressed to improve the high-temperature storage characteristics of the non-aqueous electrolyte secondary battery. A negative electrode for a non-aqueous electrolyte secondary battery contains silicon-containing particles and graphite particles. A covering layer is disposed on each of the graphite particles. The covering layer contains a first covering material and a second covering material, the first covering material containing particles that can be made to swell with a non-aqueous electrolytic solution, the second covering material containing a water-soluble polymer material. The first covering material is disposed on a surface of each of the graphite particles. The mass ratio of the second covering material to the first covering material is higher than 1.
    Type: Grant
    Filed: December 19, 2014
    Date of Patent: June 11, 2019
    Assignee: SANYO Electric Co., Ltd.
    Inventors: Na Wang, Shinji Kasamatsu, Yoshio Kato
  • Patent number: 10263276
    Abstract: A producing method of an assembled battery includes: preparing plural battery cells each of which includes an electrode body having a positive electrode and a negative electrode, and a container for housing the electrode body; classifying the plural battery cells into plural thickness ranks depending on a thickness in an arrangement direction of the electrode body housed inside each battery cell; and arranging the plural battery cells in the arrangement direction, and fastening the plural battery cells such that a load is applied to the plural battery cells in the arrangement direction, the plural battery cells being selected from the plural thickness ranks in a manner as to conform a length in the arrangement direction of the battery cells is adapted to a predetermined length when the plural battery cells are arranged in the arrangement direction.
    Type: Grant
    Filed: May 19, 2016
    Date of Patent: April 16, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Keiichiro Kobayashi
  • Patent number: 10199639
    Abstract: A secondary alkaline battery using manganese dioxide is described. The battery includes a mixed cathode material with birnessite-phase manganese dioxide or electrolytic manganese dioxide (EMD), a bismuth compound and a copper compound selected from the group consisting of elemental copper and a copper salt. In some embodiments, a conductive carbon and/or a binder may also be included.
    Type: Grant
    Filed: December 30, 2016
    Date of Patent: February 5, 2019
    Assignee: Research Foundation of the City University of New York
    Inventors: Gautam G. Yadav, Joshua Gallaway, Michael Nyce, Sanjoy Banerjee
  • Patent number: 10109856
    Abstract: A negative electrode including a current collector, a first mix layer containing first active material particles and a binder, and a second mix layer containing second active material particles and a binder. The first mix layer is placed on the current collector. The second mix layer overlies the first mix layer. The first active material particles and the second active material particles contain Si. The second mix layer includes a plurality of pillar portions. The expansion coefficient of the second mix layer during charge is higher than the expansion coefficient of the first mix layer during charge. The electrical conductivity of the first mix layer is higher than the electrical conductivity of the second mix layer.
    Type: Grant
    Filed: September 18, 2014
    Date of Patent: October 23, 2018
    Assignee: SANYO Electric Co., Ltd.
    Inventor: Shouichiro Sawa
  • Patent number: 10109879
    Abstract: Electrochemical cells, such as those present within flow batteries, can have at least one electrode with a density gradient in which the density increases outwardly from a separator. Such electrodes can decrease contact resistance and lessen the incidence of parasitic reactions in the electrochemical cell. Flow batteries containing the electrochemical cells can include: a first half-cell containing a first electrode, a second half-cell containing a second electrode, and a separator disposed between the first half-cell and the second half-cell. At least one of the first electrode and the second electrode has a density gradient such that a density of at least one of the first electrode and the second electrode increases outwardly from the separator.
    Type: Grant
    Filed: May 27, 2016
    Date of Patent: October 23, 2018
    Assignee: Lockheed Martin Energy, LLC
    Inventors: Jeremy Loretz, Srivatsava Venkataranga Puranam, Helen Elizabeth Vanbenschoten
  • Patent number: 10087537
    Abstract: The present invention relates to a mesh-shaped, porous electric current density distributor for use with an electrode, the current density distributor being adapted for providing electric current to an active layer of the electrode, which active layer is provided to contact a face of the current density distributor, wherein the current density distributor comprises a porous mesh having a plurality of electrically conductive paths, wherein at least part of the electrically conductive paths extend along a direction of major current flow over the current density distributor. The porous mesh comprises in a direction crosswise to the direction of major electric current flow, a plurality of first paths of an electric insulator. The current carrying capacity of the current density distributor in crosswise direction to the major current flow over the current density distributor is smaller than the current carrying capacity in the direction along the major current flow over the current density distributor.
    Type: Grant
    Filed: February 26, 2014
    Date of Patent: October 2, 2018
    Assignee: VITO NV
    Inventors: Deepak Pant, Xochitl Dominguez Benetton, Yolanda Alvarez Gallego, Bert Bouwman
  • Patent number: 10079371
    Abstract: An electrochemical storage multi-cell may comprise: a housing, including a plurality of concentric annular cell chambers; a plurality of electrochemical storage cells, wherein each of the plurality of annular cells are positioned in one of the plurality of annular cell chambers, and the plurality of annular cells are electrically connected in series; and conductive electrolyte filling each of the annular cell chambers.
    Type: Grant
    Filed: January 9, 2015
    Date of Patent: September 18, 2018
    Assignee: A123 Systems, LLC
    Inventors: James E. Dawson, Mujeeb Ijaz
  • Patent number: 10038193
    Abstract: An electrode for use in a device such as a secondary battery may include a first layer having first active particles adhered together by a binder, a second layer having second active particles adhered together by a binder, and an interphase layer interposed between the first and second layers. In some examples, the interphase layer may include an interpenetration of the first and second particles, such that substantially discrete fingers of the first layer interlock with substantially discrete fingers of the second layer.
    Type: Grant
    Filed: July 28, 2017
    Date of Patent: July 31, 2018
    Assignee: EnPower, Inc.
    Inventors: Kjell William Schroder, Adrian Yao, Neelam Singh
  • Patent number: 10033035
    Abstract: An object of the present invention is to provide a method for producing active material composite particles having a dense coating layer. In the present invention, the above object is achieved by providing a method for producing an active material composite particle, the method comprising steps of: a coating step of coating a surface of an active material with a precursor solution of a Li ion conductive oxide to form a precursor layer; a heat treatment step of performing heat treatment on the precursor layer to form a coating layer comprising the Li ion conductive oxide; and a compression shearing treatment step of performing compression shearing treatment on the coating layer.
    Type: Grant
    Filed: February 5, 2016
    Date of Patent: July 24, 2018
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Takayuki Uchiyama, Masahiro Iwasaki, Hirokazu Kawaoka
  • Patent number: 10008714
    Abstract: An anode mixture with high energy density and capability of restraining the decrease in capacity maintaining rate due to the expansion and contraction of an anode active material is provided. The anode mixture includes a first anode active material, a second active material and a solid electrolyte material. The first anode active material is an active material having a carbon matrix and a particle containing Si or Sn dispersed into the carbon matrix. An average particle diameter of the first anode active material is 15 ?m or less and a content of the carbon matrix in the first anode active material is 15% by weight or more and 65% by weight or less. A content of the particle in the first anode active material is 35% by weight or more and 85% by weight or less and has an average particle diameter of 11 nm or less.
    Type: Grant
    Filed: July 20, 2016
    Date of Patent: June 26, 2018
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Satoshi Mizutani
  • Patent number: 9997773
    Abstract: Disclosed are a negative electrode active material for lithium secondary batteries, a method of preparing the same and a lithium secondary battery including the same. More particularly, the negative electrode active material includes a core that includes a lithium titanium oxide represented by Formula 1 below and a coating layer that is located in a surface of the core and includes fluorine, and thus, a moisture content in the active material is decreased and adsorption of outside moisture is inhibited, thereby removing concern for side reaction occurrence due to moisture. In addition, loss of an SEI layer may be prevented due to a stable fluorine-containing coating layer formed on a surface of the active material. As a result, battery performance may be enhanced and stable expression thereof is possible: LixTiyO4,??[Formula 1] wherein x and y are the same as defined in the present specification.
    Type: Grant
    Filed: July 23, 2015
    Date of Patent: June 12, 2018
    Assignee: LG Chem, Ltd.
    Inventors: Ju Ho Chung, Eun Kyung Kim, Sang Wook Woo, Sung Bin Park, Ye Ri Kim, Jun Hyuk Song
  • Patent number: 9806371
    Abstract: An anode capable of preventing expansion of an anode active material layer and a battery using it are provided. The anode includes an anode current collector, and an anode active material layer containing silicon (Si) as an element, wherein the anode active material layer therein contains at least one selected from the group consisting of a fluoride of an alkali metal and a fluoride of an alkali earth metal.
    Type: Grant
    Filed: August 14, 2015
    Date of Patent: October 31, 2017
    Assignee: SONY CORPORATION
    Inventors: Takakazu Hirose, Kenichi Kawase, Isamu Konishiike, Masayuki Iwama
  • Patent number: 9692056
    Abstract: Batteries having improved current collection are provided. In some implementations, an electrode structure of a battery may include an active material and two or more current collectors in electrical communication with the active material. In some implementations, an electrode structure of a battery may include two or more current collector layers. According to various implementations, the electrode structure may or may not include a current collector substrate. In some implementations, a battery anode includes a current collector substrate in electronic contact with nanostructured active material. In order to ensure that electronic communication between the active material and the current collector substrate is maintained throughout the life of the battery, a second electronically conductive path is provided in the form of a current collector layer over the nanostructured active material. The additional layer is thin and electronically conductive, and does not interfere adversely with battery operation.
    Type: Grant
    Filed: April 15, 2013
    Date of Patent: June 27, 2017
    Assignee: Amprius, Inc.
    Inventors: Zuqin Liu, Song Han
  • Patent number: 9680177
    Abstract: An all-solid-state thin-film battery according to an aspect of the present disclosure includes: a solid electrolyte layer; a cathode active material layer; a cathode current collector layer including a first portion and a second portion; an anode terminal layer; and an anode layer including a third portion and a fourth portion. The first contact surface between the solid electrolyte layer and the cathode active material layer, the second contact surface between the solid electrolyte layer and the first portion of the cathode current collector layer, and the third contact surface between the third portion of the anode layer and the anode terminal layer are located within a single plane.
    Type: Grant
    Filed: May 16, 2015
    Date of Patent: June 13, 2017
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Kazuya Iwamoto, Hitoshi Kimura
  • Patent number: 9614215
    Abstract: A negative electrode material for a lithium secondary battery, having one of iron foil and iron-base alloy foil, wherein the one of iron foil and iron-base alloy foil which has a surface profile having a plurality of concave shaped hollows formed by heat treating with laser beam irradiation and the surface is a surface which contacts with an electrolyte solution for a lithium secondary battery. There is further provided a lithium secondary battery including a negative electrode of the negative electrode material, a positive electrode using a lithium compound as an active material, an electrolyte between the negative electrode and the positive electrode, and a separator dividing the negative electrode and the positive electrode from each other.
    Type: Grant
    Filed: March 7, 2014
    Date of Patent: April 4, 2017
    Assignee: SANGO CO., LTD.
    Inventors: Kouichi Izuhara, Makoto Daifuku, Shunsuke Ouchi
  • Patent number: 9583781
    Abstract: The disclosed embodiments provide a battery cell. The battery cell includes a set of layers which are wound together to form a jelly roll, including a cathode with an active coating, a separator, and an anode with an active coating. The battery cell also includes a pouch enclosing the layers, wherein the pouch is flexible. To increase a current flow in the battery cell, a first set of conductive tabs is coupled to a cathode substrate of the cathode, and a second set of conductive tabs is coupled to an anode substrate of the anode.
    Type: Grant
    Filed: April 24, 2013
    Date of Patent: February 28, 2017
    Assignee: Apple Inc.
    Inventors: Taisup Hwang, Richard M. Mank, Bookeun Oh
  • Patent number: 9531011
    Abstract: An electrode plate is configured by applying an active material onto a base member formed of a punching steel plate, the electrode plate being wound via a separator together with an electrode plate, which has a different polarity, and having an outermost peripheral portion positioned at the outermost periphery of an electrode assembly. The rate of hole area of the base member at a different electrode overlapping portion, which radially inwardly overlaps on a winding terminal end of the electrode plate having the different polarity, is smaller than that of the base member at the outermost peripheral portion.
    Type: Grant
    Filed: February 13, 2013
    Date of Patent: December 27, 2016
    Assignee: GS YUASA INTERNATIONAL LTD.
    Inventors: Manabu Kanemoto, Tadashi Kakeya, Mitsuhiro Kodama
  • Patent number: 9520598
    Abstract: A printed energy storage device includes a first electrode including zinc, a second electrode including manganese dioxide, and a separator between the first electrode and the second electrode, the first electrode, second, electrode, and separator printed onto a substrate. The device may include a first current collector and/or a second current collector printed onto the substrate. The energy storage device may include a printed intermediate layer between the separator and the first electrode. The first electrode, and the second electrode may include 1-ethyl-3-methylimidazolium tetrafluoroborate (C2mimBF4). The first electrode and the second electrode may include an electrolyte having zinc tetrafluoroborate (ZnBF4) and 1-ethyl-3-methylimidazolium tetrafluoroborate (C2mimBF4). The first electrode, the second electrode, the first current collector, and/or the second current collector can include carbon nanotubes. The separator may include solid microspheres.
    Type: Grant
    Filed: October 9, 2013
    Date of Patent: December 13, 2016
    Assignee: NthDegree Technologies Worldwide Inc.
    Inventors: Vera N. Lockett, John G. Gustafson, Alexandra E. Hartman, Mark D. Lowenthal, William J. Ray
  • Patent number: 9490485
    Abstract: A method for producing a laminated electrically conductive sheet includes the steps of preparing a support board, forming an electrically conductive layer at one side in a thickness direction of the support board, and transferring the electrically conductive layer onto at least one surface in the thickness direction of a resin-containing layer containing a resin.
    Type: Grant
    Filed: May 2, 2013
    Date of Patent: November 8, 2016
    Assignee: NITTO DENKO CORPORATION
    Inventor: Shinichi Inoue
  • Patent number: 9457512
    Abstract: Conventional ion rechargeable batteries having an electrode layer on an electrolyte layer suffer from an impurity layer formed at the interface, degrading performance. Conventional batteries with no such impurity layer have a problem of weak interface bonding. In the present invention, in a baking process step after an electrode layer is laminated on an electrolyte layer, materials for an electrode layer and an electrolyte layer are selected such that an intermediate layer formed of a reaction product contributing to charging and discharging reactions is formed at the interface of the electrode layer and the electrolyte layer. In addition, a paste that an active material is mixed with a conductive material at a predetermined mixing ratio is used to form a positive electrode layer and a negative electrode layer. Reductions in electrode resistance and interface resistance and improvement of charging and discharging cycle characteristics are made possible.
    Type: Grant
    Filed: July 1, 2013
    Date of Patent: October 4, 2016
    Assignee: NAMICS CORPORATION
    Inventors: Mamoru Baba, Shoichi Iwaya, Hitoshi Masumura, Noriyuki Sakai, Takayuki Fujita, Hiroshi Sasagawa, Hiroshi Sato
  • Patent number: 9450236
    Abstract: An electricity-storing device includes a first electrode, a second electrode of opposite polarity as the first electrode, and a separator. The first electrode includes a current collector foil, an active material layer formed on at least one surface of the current collector foil, and an electrical resistance layer formed on the at least one surface of the current collector foil so as to be adjacent to and in direct contact with the active material layer, at least a portion of an interface between the active material layer and the electrical resistance layer including a mixed phase where constituents from the active material layer and the electrical resistance layer intermingle.
    Type: Grant
    Filed: January 16, 2015
    Date of Patent: September 20, 2016
    Assignee: GS Yuasa International Ltd.
    Inventors: Kenji Tanaka, Kazuaki Matsuo, Kazuhide Tozuka, Kazuya Okabe
  • Patent number: 9401511
    Abstract: In one embodiment, a metal/oxygen electrochemical cell includes a negative electrode, a separator positioned adjacent to the negative electrode, a positive electrode spaced apart from the negative electrode by the separator, the positive electrode including a porous electrically conductive material portion, the porous electrically conductive material portion coated with a conformally coated protective layer, and an electrolyte within the porous electrically conductive material portion.
    Type: Grant
    Filed: August 7, 2013
    Date of Patent: July 26, 2016
    Assignee: Robert Bosch GmbH
    Inventors: Boris Kozinsky, John F. Christensen, Paul Albertus