The Alkali Metal Is Lithium Patents (Class 429/231.95)
  • Patent number: 10804572
    Abstract: A lithium secondary battery includes a wound electrode group and a lithium-ion conductive nonaqueous electrolyte. The wound electrode group includes a positive electrode, a negative electrode, and a separator between the positive electrode and the negative electrode. The negative electrode includes a negative electrode current collector. The negative electrode current collector includes: a layer having a first surface facing outward of the winding of the electrode group and a second surface facing inward of the winding of the electrode group; first protrusions protruding from the first surface; and second protrusions protruding from the second surface. Lithium metal is deposited on the first surface and the second surface by charging. A first average height of the first protrusions is higher than a second average height of the second protrusions.
    Type: Grant
    Filed: January 22, 2019
    Date of Patent: October 13, 2020
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Akira Kano, Ryohei Miyamae, Kiyohiro Isii, Junichi Sakamoto
  • Patent number: 10804530
    Abstract: Composite anode materials and methods of making same, the anode materials including capsules including graphene, reduced graphene oxide, graphene oxide, or a combination thereof, and particles of an active material disposed inside of the capsules. The particles may each include a core and a buffer layer surrounding the core. The core may include crystalline silicon, and the buffer layer may include a silicon oxide, a lithium silicate, carbon, or a combination thereof.
    Type: Grant
    Filed: August 3, 2017
    Date of Patent: October 13, 2020
    Assignee: NANOGRAF CORPORATION
    Inventors: James McKinney, Cary M. Hayner, Joshua J. Lau, Seonbaek Ha, Francis Wang
  • Patent number: 10797322
    Abstract: A nonaqueous battery includes a current collector that supports an electrode active material. The current collector includes a first layer, a second layer and a third layer. The second layer is interposed between the first layer and the third layer. The second layer includes 0.3 mass % or more and 1 mass % or less of magnesium and 0.2 mass % or more and 0.9 mass % or less of silicon, with a remainder being made up of aluminum. The first layer and the third layer constitute outer surfaces of the current collector. The first layer and the third layer each include 99.3 mass % or more of aluminum. In both of the first layer and the third layer, there is less than 0.3 mass % of magnesium and less than 0.2 mass % of silicon.
    Type: Grant
    Filed: March 30, 2018
    Date of Patent: October 6, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Koji Torita, Harunari Shimamura, Yusuke Fukumoto, Akihiro Ochiai
  • Patent number: 10784531
    Abstract: A composite body includes a positive electrode active material composed of a lithium composite metal oxide containing Li and at least one type of transition metal, and an electrolyte, wherein the positive electrode active material is present on one surface of the composite body, the one type of transition metal is Co, and the molar ratio of Co (cobalt) in the positive electrode active material (lithium cobalt oxide) present on the one surface is equal to or more than the molar ratio of O (oxygen).
    Type: Grant
    Filed: July 31, 2018
    Date of Patent: September 22, 2020
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Tomoyuki Okuyama
  • Patent number: 10777817
    Abstract: A lithium ion secondary battery having more improved cycle characteristics is provided. The present invention provides a lithium ion secondary battery which comprises a negative electrode comprising graphite particles, silicon oxide particles having a composition represented by SiOx(0<x?2), and hardly graphitizable carbon particles.
    Type: Grant
    Filed: March 22, 2016
    Date of Patent: September 15, 2020
    Assignee: NEC Corporation
    Inventor: Takeshi Azami
  • Patent number: 10777812
    Abstract: An electrochemically active material includes an active phase that includes silicon, and at least one inactive phase having a Scherrer Grain Size of greater than 5 nanometers. Each inactive phase of the material having a Scherrer Grain Size of greater than 5 nanometers has a lattice mismatch to Li15Si4 of greater than 5%.
    Type: Grant
    Filed: December 15, 2016
    Date of Patent: September 15, 2020
    Assignee: Johnson Matthey Public Limited Company
    Inventors: Xiaohua Ma, Mark N. Obrovac
  • Patent number: 10770714
    Abstract: The present invention relates to an electrode manufacturing method, an electrode manufactured thereby, and a battery comprising the same, the electrode manufacturing method comprising the steps of: applying an electrode active material onto a collector; and radiating a laser such that the end of an electrode active material layer, which has been obtained by applying the electrode active material, becomes straight, thereby removing the electrode active material. The present invention is advantageous in that the difference in area between active materials applied to the positive and negative electrodes, respectively, is minimized, thereby increasing the capacity and improving the stability of the battery.
    Type: Grant
    Filed: October 26, 2015
    Date of Patent: September 8, 2020
    Assignee: LG CHEM, LTD.
    Inventors: Tae-Su Kim, Jin-Soo Lee, Bu-Gon Shin, Ki-Eun Sung, Dae-Han Seo
  • Patent number: 10756340
    Abstract: The present disclosure is directed to providing improved processability by forming a protective film on the surface of lithium metal used as an electrode layer through a simple process, and to improving the cycle characteristics of a lithium metal secondary battery by forming a stable protective film. The present disclosure provides a method for manufacturing a negative electrode, including the steps of: (S1) preparing lithium metal; and (S2) dipping the lithium metal in an acid solution for 60-120 seconds to form a LiF film on the surface of lithium metal.
    Type: Grant
    Filed: December 1, 2017
    Date of Patent: August 25, 2020
    Assignee: LG CHEM, LTD.
    Inventor: Hyun-Woong Yun
  • Patent number: 10749208
    Abstract: The object is to provide a lithium ion secondary battery which has an excellent cycle property even in high-temperature environment and which has small volume increase. An exemplary embodiment of the invention is a lithium ion secondary battery, comprising: a positive electrode, a negative electrode comprising a negative electrode active material, and an electrolyte liquid; wherein the electrolyte liquid comprises a chain-type fluorinated ester compound represented by a predetermined formula and a chain-type fluorinated ether compound represented by a predetermined formula; wherein the negative electrode active material comprises metal (a) that can be alloyed with lithium, metal oxide (b) that can absorb and desorb lithium ion, and carbon material (c) that can absorb and desorb lithium ion; and wherein metal (a) is silicon, and metal oxide (b) is silicon oxide.
    Type: Grant
    Filed: March 16, 2012
    Date of Patent: August 18, 2020
    Assignee: NEC CORPORATION
    Inventors: Makiko Uehara, Daisuke Kawasaki, Takehiro Noguchi, Akinobu Nakamura, Kenichi Shimura, Yoko Hashizume
  • Patent number: 10741299
    Abstract: (Problem to be Solved) The present invention was made in view of the above-described problems, with an object of providing a Li—P—S-based sulfide solid electrolyte material with both excellent electrochemical stability and a high lithium ion conductivity, providing a method of producing the Li—P—S-based sulfide solid electrolyte material, and providing a lithium battery including the sulfide solid electrolyte material. (Solution) There is provided a sulfide solid electrolyte material including a Li element, a P element, and a S element and having peaks at positions of 2?=17.90±0.20, 29.0±0.50, and 29.75±0.25? in powder X-ray diffraction measurement using a Cu-K? ray having an X-ray wavelength of 1.5418 ?, in which assuming that the diffraction intensity of the peak at 2?=17.90±0.20 is IA and the diffraction intensity of the peak at 2?=18.50±0.20 is IB, a value of IB/IA is less than 0.50.
    Type: Grant
    Filed: July 15, 2016
    Date of Patent: August 11, 2020
    Assignees: Tokyo Insititute of Technology, Toyota Jidosha Kabushiki Kaisha
    Inventors: Ryoji Kanno, Satoshi Hori
  • Patent number: 10741827
    Abstract: Methods for preparing an electrode for a secondary battery are provided herein. In some embodiments, the method includes coating a current collector with an electrode slurry to form a coating layer on the current collector, the electrode slurry including a binder, an electrode active material, a conductive material, and amorphous selenium nanoparticles, and a solvent; and drying the coating layer, wherein the drying vaporizes the amorphous selenium nanoparticles and forms a passageway in the coating layer.
    Type: Grant
    Filed: February 6, 2018
    Date of Patent: August 11, 2020
    Assignee: LG Chem, Ltd.
    Inventor: Young Hwan Lee
  • Patent number: 10727473
    Abstract: A secondary cell comprising a positive cathode electrode of capacity P (mAh) in communication with a liquid or gel electrolyte; an negative anode electrode of capacity N (mAh) in communication with the electrolyte; and a separator permeable to at least one mobile species which is redox-active at least one of the anode and the cathode; designed and constructed such that the anode capacity N is smaller than that of the cathode capacity P, hence N/P<0.9.
    Type: Grant
    Filed: December 12, 2017
    Date of Patent: July 28, 2020
    Assignee: Viking Power Systems Pte. Ltd.
    Inventors: Christopher Carl Fischer, Robert Ellis Doe, David Eaglesham, Matthew Joseph Trahan, Andrew Gmitter
  • Patent number: 10727479
    Abstract: Provided is a method of producing a mass of graphene-embraced particulates, comprising (A) peeling off graphene sheets from graphite particles and directly or indirectly transferring these graphene sheets to encapsulate primary particles of an anode active material using an energy-impact device, wherein multiple graphene sheets are overlapped together to embrace or encapsulate a primary particle; and (B) combining the resulting graphene-encapsulated primary particles with additional graphene sheets, along with an optional conductive additive, to form graphene-embraced particulates. Also provided are an anode electrode comprising multiple graphene-embraced particulates and a battery comprising such an anode electrode.
    Type: Grant
    Filed: June 1, 2018
    Date of Patent: July 28, 2020
    Assignee: Global Graphene Group, Inc.
    Inventors: Aruna Zhamu, Jun Yin, Jen-Hsien Yang, Yu-Sheng Su, Bor Z. Jang
  • Patent number: 10714754
    Abstract: The purpose of the present invention is to provide a graphene which has high dispersibility, high electrical conductivity and oxidation resistance namely a graphene which has high electrochemical stability. In order to achieve the above-described purpose, a surface-treated graphene according to the present invention is obtained by having a compound represented by general formula (1) or a neutralized salt thereof adhere to a graphene.
    Type: Grant
    Filed: February 20, 2017
    Date of Patent: July 14, 2020
    Assignee: Toray Industries, Inc.
    Inventors: Koichiro Manabe, Eiichiro Tamaki, Manabu Kawasaki
  • Patent number: 10707481
    Abstract: The disclosure includes a composition of matter including a film formed on substantially all nSi-cPAN particles included in an electrode, the film including fluorine, oxygen, sulfur, carbon and lithium.
    Type: Grant
    Filed: October 30, 2015
    Date of Patent: July 7, 2020
    Assignee: The Regents of the University of Colorado, a body corporate
    Inventors: Se-Hee Lee, Jerry Martin, Vinay Bhat, Daniela Molina Piper, Tyler Evans
  • Patent number: 10700350
    Abstract: According to one embodiment, a nonaqueous electrolyte battery includes a positive electrode, a negative electrode, and a nonaqueous electrolyte. The positive electrode includes at least one oxide selected from the group consisting of a first oxide having a spinel structure and represented by LixNi0.5Mn1.5O4, a second metal phosphate having an olivine structure and represented by LixMn1?wFewPO4, and a third oxide having a layered structure and represented by LixNiyMnzCo1?y?zO2. The nonaqueous electrolyte includes a first solvent. The first solvent includes at least one compound selected from the group consisting of trimethyl phosphate, triethyl phosphate, tripropyl phosphate, tributyl phosphate, and fluorinated phosphate ester.
    Type: Grant
    Filed: February 20, 2018
    Date of Patent: June 30, 2020
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Norio Takami, Hiroki Inagaki, Takashi Kishi
  • Patent number: 10700351
    Abstract: According to one embodiment, a nonaqueous electrolyte battery includes a positive electrode, a negative electrode, and a nonaqueous electrolyte. The positive electrode includes at least one oxide selected from the group consisting of a first oxide having a spinel structure and represented by LixNi0.5Mn1.5O4, a second metal phosphate having an olivine structure and represented by LixMn1-wFewPO4, and a third oxide having a layered structure and represented by LixNiyMnzCo1-y-zO2. The nonaqueous electrolyte includes a first solvent. The first solvent includes at least one compound selected from the group consisting of trimethyl phosphate, triethyl phosphate, tripropyl phosphate, tributyl phosphate, and fluorinated phosphate ester.
    Type: Grant
    Filed: February 20, 2018
    Date of Patent: June 30, 2020
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Norio Takami, Hiroki Inagaki, Takashi Kishi
  • Patent number: 10686189
    Abstract: The present invention provides a negative electrode material for a non-aqueous electrolyte secondary battery, comprising negative electrode active material particles containing a silicon compound expressed by SiOx at least partially coated with a carbon coating where 0.5?x?1.6. The negative electrode active material particles have a negative zeta potential and exhibiting fragments of CyHz compound in an outermost surface layer of the silicon compound when subjected to TOF-SIMS. This negative electrode material can increase the battery capacity and improve the cycle performance and battery initial efficiency. The invention also provides a negative electrode active material layer, a negative electrode, and a non-aqueous electrolyte secondary battery using this material, and a method of producing this material.
    Type: Grant
    Filed: March 24, 2015
    Date of Patent: June 16, 2020
    Assignee: SHIN-ETSU CHEMICAL CO., LTD.
    Inventors: Hiromichi Kamo, Kohta Takahashi, Takakazu Hirose, Masahiro Furuya, Hiroki Yoshikawa
  • Patent number: 10680276
    Abstract: An electrode mixture of the present invention comprises: an electrode active material; a binder; and a conductive material. When a cross-section of the electrode mixture is imaged such that a pixel filled 100% with a conductive material among a plurality of divided pixels is considered to be a condensed pixel and a value obtained by counting condensed pixels is considered to be the degree of agglomeration, the degree of agglomeration of a conductive material in the electrode mixture in the depth direction of the electrode mixture has a standard deviation less than 3.0. The electrode mixture as described above includes a conductive material uniformly distributed therein and thus has low electrode resistance. Therefore, the electrode mixture can improve output and lifespan properties of a lithium secondary battery to which the electrode mixture has been applied.
    Type: Grant
    Filed: May 25, 2016
    Date of Patent: June 9, 2020
    Assignee: LG Chem, Ltd.
    Inventors: Jung Woo Yoo, Hyeok Moo Lee, Ji Hye Park, Song Taek Oh
  • Patent number: 10665861
    Abstract: A positive active material for a rechargeable lithium battery includes a lithium nickel-based metal oxide represented by LixNi1-yMyO2 and a lithium-containing oxide on a surface of the lithium nickel-based metal oxide. In the formula LixNi1-yMyO2, M is one or more of Co, Mn, Al, Mg, Ti, Zr, or a combination thereof, 0<x<1.1, and 0?y<0.5.
    Type: Grant
    Filed: October 27, 2017
    Date of Patent: May 26, 2020
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Dongjin Kim, Minhan Kim, Dohyung Park, Young Jin Park, Kyounghyun Kim, Ilseok Kim
  • Patent number: 10658704
    Abstract: A method of manufacturing an electrode laminate, which includes an active material layer and a solid electrolyte layer formed on the active material layer, includes: an active material layer forming step of forming an active material layer; and a solid electrolyte layer forming step of forming a solid electrolyte layer on the active material layer by applying a solid electrolyte layer-forming slurry to the active material layer and drying the solid electrolyte layer-forming slurry. In this method, a surface roughness Ra value of the active material layer is 0.29 ?m to 0.98 ?m when calculated using a laser microscope.
    Type: Grant
    Filed: September 23, 2016
    Date of Patent: May 19, 2020
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Kengo Haga, Junichiro Nishino, Norihiro Ose, Hajime Hasegawa, Mitsutoshi Otaki, Hiroki Kubo, Keisuke Omori
  • Patent number: 10651514
    Abstract: A battery and related methods are described. The battery can include a plurality of battery cell segments. Each of the battery cell segments can include: a positive temperature coefficient (PTC) material whose resistance increases with temperature, an anode segment, a cathode segment, and one or more current limiters. The one or more current limiters of a battery cell segment are configured to conditionally electrically isolate the battery cell segment based on an occurrence of a short circuit within the battery cell segment. The battery can be used to store electrical power and/or provide electrical power to a load.
    Type: Grant
    Filed: December 7, 2017
    Date of Patent: May 12, 2020
    Assignee: The Boeing Company
    Inventors: Shengyi Liu, John A. Trela, Kamiar J. Karimi
  • Patent number: 10644347
    Abstract: A negative electrode active material constituting a lithium ion secondary battery having high energy density and excellent cycle characteristics, and a negative electrode and a lithium ion secondary battery comprising the same are provided. The present invention relates to a negative electrode active material comprising graphite particles and crystalline silicon particles, wherein a median diameter of the crystalline silicon particles is 0.7 ?m or less, and a weight ratio of the crystalline silicon particles to the total weight of the graphite particles and the crystalline silicon particles is 1 wt % or more and 25 wt % or less.
    Type: Grant
    Filed: February 22, 2017
    Date of Patent: May 5, 2020
    Assignee: NEC Corporation
    Inventors: Daisuke Kawasaki, Takashi Ohtsuka, Suguru Tamai, Noboru Yoshida, Shinya Sudo
  • Patent number: 10633492
    Abstract: The present invention relates to a negative electrode for lithium secondary battery and a lithium secondary battery including the same. The negative electrode includes a negative electrode active layer comprising lithium, and a protective layer disposed on the negative electrode active layer, wherein the protective layer comprises a polymer matrix having a three dimensional crosslinked network structure of polymer or includes a non-crosslinked linear polymer, and an electrolyte in the polymer matrix in the amount of 100 to 1000 parts by weight based on 100 parts by weight of the polymer matrix. The negative electrode according to the present invention has no concern about loss of electrolyte and the resulting deterioration of battery life characteristics even during the repetitive charging/discharging of the battery and has improved battery stability due to the inhibition of growth of lithium dendrite.
    Type: Grant
    Filed: December 17, 2015
    Date of Patent: April 28, 2020
    Assignee: LG CHEM, LTD.
    Inventors: Taek Gyoung Kim, Min Chul Jang, Byoung Kuk Son, Doo Kyung Yang
  • Patent number: 10637049
    Abstract: The invention discloses a composite electrode materials. The composite electrode materials of this invention includes at least one active material. The active material is coated an artificial passive film on its surface to effectively block the contact of the electrolyte and the active material to prevent unnecessary consumption of Li-ions. Also, there have a middle layer and an outer layer outside of the artificial passive film. Both of the middle layer and the outer layer are composed of the gel/liquid electrolyte and the solid electrolyte, but with different concentration ratios. Therefore, the better ion-conduction is achieved with reduced charge-transfer resistance and reduced amount of organic solvent.
    Type: Grant
    Filed: January 22, 2019
    Date of Patent: April 28, 2020
    Assignees: PROLOGIUM TECHNOLOGY CO., LTD., PROLOGIUM HOLDING INC.
    Inventor: Szu-Nan Yang
  • Patent number: 10622625
    Abstract: The present invention relates to a positive electrode and a secondary battery including the same, and particularly, to a positive electrode which includes a current collector; a first active material layer including first active material particles and disposed on the current collector; and a first pattern and a second pattern alternately disposed separately from each other on the first active material layer, wherein the first pattern includes first pattern active material particles, the second pattern includes second pattern active material particles, the first pattern has a thickness greater than that of the second pattern, and the second pattern has a volume expansion rate greater than that of the first pattern, and a secondary battery including the same.
    Type: Grant
    Filed: July 4, 2017
    Date of Patent: April 14, 2020
    Assignee: LG Chem, Ltd.
    Inventors: Hye Ri Jung, Jung Pil Lee
  • Patent number: 10615450
    Abstract: The present invention provides an electrolyte solution for a lithium secondary battery including an additive, which may prevent a chemical reaction between the electrolyte solution and an electrode by forming a stable solid electrolyte interface (SEI) and a protection layer on the surface of the electrode, and a lithium secondary battery in which life characteristics and high-temperature stability are improved by including the same.
    Type: Grant
    Filed: October 13, 2017
    Date of Patent: April 7, 2020
    Assignee: LG Chem, Ltd.
    Inventors: Kyoung Ho Ahn, Yu Ra Jeong, Chul Haeng Lee, Young Min Lim, Jeong Woo Oh, Jung Hoon Lee
  • Patent number: 10593934
    Abstract: A system and method of forming a silicon-hybrid anode material. The silicon-hybrid anode material including a microparticle mixture of a quantity of silicon microparticles and a quantity of metal microparticles intermixed with the quantity of silicon microparticles in a selected ratio. The microparticle mixture is formed in a silicon-hybrid anode material layer having a thickness of between about 2 and about 15 ?m.
    Type: Grant
    Filed: March 20, 2017
    Date of Patent: March 17, 2020
    Assignee: APPLEJACK 199 L.P.
    Inventors: Wenming Li, Byunghoon Yoon, Ann Koo
  • Patent number: 10593935
    Abstract: A positive active material includes an over-lithiated lithium transition metal oxide having a core-shell structure, wherein a shell layer of the core-shell structure includes a metal cation.
    Type: Grant
    Filed: May 13, 2016
    Date of Patent: March 17, 2020
    Assignees: SAMSUNG ELECTRONICS CO., LTD., SAMSUNG SDI CO., LTD.
    Inventors: Sungjin Ahn, Jinhwan Park, Jayhyok Song, Andrei Kapylou, Byongyong Yu
  • Patent number: 10581115
    Abstract: Electrolyte for a solid-state battery includes a body having grains of inorganic material sintered to one another, where the grains include lithium. The body is thin, has little porosity by volume, and has high ionic conductivity.
    Type: Grant
    Filed: March 7, 2019
    Date of Patent: March 3, 2020
    Assignee: CORNING INCORPORATED
    Inventors: Michael Edward Badding, Jacqueline Leslie Brown, Jennifer Anella Heine, Thomas Dale Ketcham, Gary Edward Merz, Eric Lee Miller, Zhen Song, Cameron Wayne Tanner, Conor James Walsh
  • Patent number: 10566605
    Abstract: Provided are an electrode for a rechargeable lithium battery including a current collector and an active material layer positioned on the current collector, the active material layer includes an electrode active material; binder; a composite material including an acrylonitrile-based resin and a carbon-based material positioned on the surface of the acrylonitrile-based resin; and a pore, and a rechargeable lithium battery including the same.
    Type: Grant
    Filed: July 20, 2015
    Date of Patent: February 18, 2020
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Hyun-Ki Park, Jae-Myung Kim, Deok-Hyun Kim
  • Patent number: 10566620
    Abstract: A battery comprising an acidified metal oxide (“AMO”) material, preferably in monodisperse nanoparticulate form 20 nm or less in size, having a pH<7 when suspended in a 5 wt % aqueous solution and a Hammett function H0>?12, at least on its surface.
    Type: Grant
    Filed: May 16, 2018
    Date of Patent: February 18, 2020
    Assignee: HHELI, LLC
    Inventor: Paige L. Johnson
  • Patent number: 10553854
    Abstract: An object of one embodiment of the present invention is to provide a secondary battery in which deterioration of charge-discharge cycle characteristics is suppressed, to suppress generation of defects caused by expansion and contraction of an active material in a negative electrode, or to prevent deterioration caused by deformation of a secondary battery. To prevent deterioration, a material that can be alloyed with lithium and fluidified easily is used for a negative electrode. To hold a negative electrode active material over a surface of a current collector, a covering layer that covers the negative electrode active material is provided. Furthermore, a portion where the current collector and the negative electrode active material are in contact with each other is alloyed. In other words, an alloy that is in contact with both the current collector and the negative electrode active material is provided in the negative electrode.
    Type: Grant
    Filed: September 24, 2014
    Date of Patent: February 4, 2020
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Nobuhiro Inoue, Ryota Tajima, Naoki Kurihara, Junpei Momo
  • Patent number: 10541401
    Abstract: A separator for a rechargeable lithium battery includes a substrate, an organic layer positioned on at least one side of the substrate and including an organic material and an inorganic layer positioned on at least one side of the substrate and including an inorganic material, wherein the organic material includes two or more kinds of organic particles having different particle sizes from each other.
    Type: Grant
    Filed: September 1, 2015
    Date of Patent: January 21, 2020
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Eon-Mi Lee, Jong-Hwan Park, Jung-Hyun Nam, Yeon-Joo Choi, Hoon Seok, Ae-Hui Goh
  • Patent number: 10535893
    Abstract: An insulating porous layer for a nonaqueous electrolyte secondary battery having excellent separator resistance is provided. The porous layer contains an inorganic filler and a resin, a central particle diameter of the inorganic filler is in a range of 0.1 ?m to 11 ?m, a BET specific surface area per unit area of the inorganic filler is not greater than 100 m2/g, and the value of formula (1) is in a range of 0.10 to 0.40: [1?T/M]??(1) In formula (1), T and M respectively represent a distance by which the insulating porous layer moves in a traverse direction or a machine direction from a starting point of measurement to a point where a critical load is obtained in a scratch test under a constant load of 0.1 N.
    Type: Grant
    Filed: April 27, 2018
    Date of Patent: January 14, 2020
    Assignee: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Kosuke Kurakane, Ichiro Arise, Chikara Murakami
  • Patent number: 10516161
    Abstract: A negative electrode active material includes a silicon-containing alloy represented by: SixSnyMzAa (A is unavoidable impurities, M is one or more transition metal elements, x, y, z, and a represent values of percent by mass, and 0<x<100, 0<y<100, 0<z<100, and 0?a<0.5 and x+y+z+a=100). The silicon-containing alloy has a lattice image subjected to Fourier transform processing to obtain a diffraction pattern. A distance between Si regular tetrahedrons is 0.39 nm or more when the distance between Si regular tetrahedrons in an amorphous region calculated from a Fourier image obtained by subjecting a diffraction ring portion present in a width of from 0.7 to 1.0 when a distance between Si regular tetrahedrons is 1.0 in this diffraction pattern to inverse Fourier transform is 10 nm or less.
    Type: Grant
    Filed: December 17, 2014
    Date of Patent: December 24, 2019
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Tomohiro Kaburagi, Manabu Watanabe, Nobutaka Chiba, Humihiro Miki, Makoto Tanimura
  • Patent number: 10511024
    Abstract: An electrode for a nonaqueous electrolyte secondary battery includes an electrode mixture layer. The electrode mixture layer contains a hollow active material particle and a needle-shaped filler having a through-hole that extends through the needle-shaped filler in a longitudinal direction. The needle-shaped filler is arranged on surfaces of the hollow active material particle.
    Type: Grant
    Filed: January 7, 2016
    Date of Patent: December 17, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hiroya Umeyama, Tatsuya Hashimoto, Naoyuki Wada, Keiichi Takahashi, Koichi Toriyama
  • Patent number: 10511048
    Abstract: The present invention relates to a method of preparing a negative electrode active material for a secondary battery which may prevent oxidation during the preparation of nano-sized silicon particles, a negative electrode active material for a secondary battery prepared thereby, and a negative electrode for a secondary battery and a lithium secondary battery including the same.
    Type: Grant
    Filed: December 9, 2016
    Date of Patent: December 17, 2019
    Assignee: LG CHEM, LTD.
    Inventors: Rae Hwan Jo, Yong Ju Lee, Eun Kyung Kim
  • Patent number: 10497935
    Abstract: Embodiments described herein relate generally to electrochemical cells having pre-lithiated semi-solid electrodes, and particularly to semi-solid electrodes that are pre-lithiated during the mixing of the semi-solid electrode slurry such that a solid-electrolyte interface (SEI) layer is formed in the semi-solid electrode before the electrochemical cell formation. In some embodiments, a semi-solid electrode includes about 20% to about 90% by volume of an active material, about 0% to about 25% by volume of a conductive material, about 10% to about 70% by volume of a liquid electrolyte, and lithium (as lithium metal, a lithium-containing material, and/or a lithium metal equivalent) in an amount sufficient to substantially pre-lithiate the active material. The lithium metal is configured to form a solid-electrolyte interface (SEI) layer on a surface of the active material before an initial charging cycle of an electrochemical cell that includes the semi-solid electrode.
    Type: Grant
    Filed: November 3, 2015
    Date of Patent: December 3, 2019
    Assignees: 24M Technologies, Inc., Kyocera Corporation
    Inventors: Naoki Ota, Mihai Duduta, Takaaki Fukushima, Hiuling Zoe Yu, Taison Tan, Hiromitsu Mishima
  • Patent number: 10490820
    Abstract: In a positive-electrode active material layer of a positive-electrode plate for a non-aqueous electrolyte secondary battery, a dispersion index value C determined from a small-size-particle ratio A and a coefficient B of variation and expressed by an expression, C=B/A3, is 0.8 or less. The small-size-particle ratio A is a ratio of the number of small-size-particle-containing spots where a detected intensity of phosphorus is equal to or lower than a detected density of trilithium phosphate having a particle size of 1 ?m or less, to the number of phosphorus-containing spots among the analyzed spots. The coefficient B of variation is a ratio of a standard deviation of segmented-region accumulated values to an arithmetic mean of the segmented-region accumulated values each of which is the sum of detected intensities in the phosphorus-containing spots in a corresponding one of the segmented regions obtained through segmentation of the analyzed region.
    Type: Grant
    Filed: April 4, 2016
    Date of Patent: November 26, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Nobuyuki Yamazaki, Masanori Kitayoshi, Takashi Miura
  • Patent number: 10483529
    Abstract: Composite powder for use in an anode of a lithium ion battery, whereby the particles of the composite powder comprise silicon-based domains in a matrix, whereby the individual silicon-based domains are either free silicon-based domains that are not or not completely embedded in the matrix or are fully embedded silicon-based domains that are completely surrounded by the matrix, whereby the percentage of free silicon-based domains is lower than or equal to 4 weight % of the total amount of Si in metallic or oxidized state in the composite powder.
    Type: Grant
    Filed: December 11, 2015
    Date of Patent: November 19, 2019
    Assignees: UMICORE, SHOWA DENKO K.K.
    Inventors: Stijn Put, Dirk Van Genechten, Kris Driesen, Jin Hu, Yvan Strauven, Arihiro Muto, Nobuaki Ishii, Masataka Takeuchi
  • Patent number: 10483588
    Abstract: The present disclosure provides a gel electrolyte membrane and a method for forming the same, an electrode assembly, a gel polymer lithium-ion battery and an electric vehicle. The gel electrolyte membrane is located between the cathode and the anode, and has adhesion of solid electrolyte and electrical conductivity of ion of liquid electrolyte. The gel electrolyte membrane obtained in the present disclosure has a porous mesh structure, a wide film forming temperature, a short required time, a high level of liquid electrolyte in the gel polymer, a high conductivity of 3.4 to 6.3*10?3 S·cm?1, a wide electrochemical window, a good compatibility with the cathode and the anode, and low requirements for the conditions of the synthesis. The gel polymer lithium-ion battery and electrode assembly and electric vehicle of the present disclosure has high safety, simple forming technique and low requirements for environment, thus is suitable for industrial production.
    Type: Grant
    Filed: December 30, 2016
    Date of Patent: November 19, 2019
    Assignee: Interstellar Solid-State Li-ion Batteries Technology (Chengdu) Co., Ltd.
    Inventors: Xiaoli Peng, Yong Xiang, Chengxu Mou, Li Xia, Wanjin Pu, Jinwei He
  • Patent number: 10476100
    Abstract: An electrode material is provided to include a Li-containing oxide of the formula of Li(NixCoyMz)O2, wherein M is an element different from Li, Ni, Co, or O, wherein x, y, and z are each independently between 0 and 1 and the sum of x, y, z is 1; and an oxygen scavenger material contacting at least a portion of the Li-containing oxide. In another embodiment, the electrode material further includes a second Li-containing oxide having the formula of Li(Nix2Coy2Mz2)O2, wherein M is an element different from Li, Ni, Co, or O, wherein x2, y2, and z2 are each independently between 0 and 1 and the sum of x2, y2, z2 is 1, wherein the oxide composite is configured as a first material layer, wherein the second Li-containing oxide is configured as a second material layer disposed next to the first material layer.
    Type: Grant
    Filed: October 4, 2010
    Date of Patent: November 12, 2019
    Assignee: Ford Global Technologies, LLC
    Inventors: Chi Paik, Robert J. Kudla, Andrew Robert Drews
  • Patent number: 10468199
    Abstract: This nonaqueous lithium power storage element contains a positive electrode, a negative electrode, a separator, and a nonaqueous electrolyte that contains lithium ions. The positive electrode has a positive electrode current collector and a positive electrode active material layer disposed on one surface or both surfaces of the positive electrode current collector, and the positive electrode active material layer contains a positive electrode active material that contains a carbon material. When the pore distribution of the positive electrode active material layer is measured by mercury intrusion, the pore distribution curve for the relationship between the pore diameter and log differential pore volume has at least one peak having a peak value of 1.0-5.0 mL/g for the log differential pore volume in the pore diameter range of 0.1-50 ?m, and the total cumulative pore volume Vp in the pore diameter range of 0.1-50 ?m is 0.7-3.0 mL/g.
    Type: Grant
    Filed: January 20, 2017
    Date of Patent: November 5, 2019
    Assignee: Asahi Kasei Kabushiki Kaisha
    Inventors: Keita Kusuzaka, Kazuteru Umetsu, Nobuhiro Okada, Tekeshi Kamijo, Atsushi Hosokibara, Tadashi Matsushita
  • Patent number: 10468723
    Abstract: An electrolyte includes an organic solvent and a cyclic ester compound that is substituted with a sulfonate group.
    Type: Grant
    Filed: January 19, 2017
    Date of Patent: November 5, 2019
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Hyun Bong Choi, Ae Ran Kim, Mi Young Son, Woo Cheol Shin, Myung Heui Woo, Seung Tae Lee, Ha rim Lee
  • Patent number: 10446884
    Abstract: An example of a three-electrode test cell includes a negative electrode, a positive electrode having an aperture defined therein, a reference electrode, and a first microporous polymer separator soaked in an electrolyte. The reference electrode is disposed within the aperture of the positive electrode and physically separated from the positive electrode. The first microporous polymer separator is disposed between the negative electrode and the positive electrode.
    Type: Grant
    Filed: October 17, 2016
    Date of Patent: October 15, 2019
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Li Yang, Mei Cai, Martin S. Ruthkosky, Fang Dai
  • Patent number: 10439208
    Abstract: Disclosed is a negative electrode active material for secondary batteries having improved lifespan characteristics. In particular, provided is a negative electrode active material, for secondary batteries, including silicon (Si), and amorphous hard carbon or low-crystalline soft carbon.
    Type: Grant
    Filed: July 24, 2014
    Date of Patent: October 8, 2019
    Assignee: LG Chem, Ltd.
    Inventors: In Sung Uhm, Jungwoo Yoo, Je Young Kim, Hoe Jin Hah, Ji Yoon Kwon
  • Patent number: 10431830
    Abstract: A current collector for a battery includes: a layer (1) formed from an electrically conductive material and at least one of (a) a polymer compound having an alicyclic structure, (b) a saturated hydrocarbon polymer compound having a hydroxyl group, (c) a phenoxy resin and an epoxy resin, and (d) an amine having an amine equivalent of 120 g/eq or less and an epoxy resin; a layer (2) which is formed on at least one surface of the layer (1); and a layer (3) formed from an electrically conductive material. The current collector for a battery has stability to an equilibrium potential environment in a negative electrode, a low electric resistance, a blocking property to solvent in electrolytic solution, and a blocking property to a component in an electrolyte. In addition, the current collector for a battery has a high capacity retention rate, and battery durability is improved.
    Type: Grant
    Filed: August 29, 2013
    Date of Patent: October 1, 2019
    Assignees: KANEKA CORPORATION, NISSAN MOTOR CO., LTD.
    Inventors: Satoshi Oku, Yusuke Kato, Akiko Waki, Takashi Kikuchi, Takashi Ito, Masahiro Kojima, Gentaro Kano, Shiho Inoue, Yasuyuki Tanaka, Norihisa Waki, Yuji Muroya, Kazuki Miyatake, Yoshio Shimoida, Keisuke Wakabayashi, Tomohisa Matsuno, Seiji Ishimoto
  • Patent number: 10424779
    Abstract: The present disclosure relates to lithium-ion batteries and methods for their manufacture. Specifically, the method includes forming a cathode on a first substrate and forming an anode on a second substrate. The anode material includes silicon. The method includes slitting the first substrate and the second substrate. After slitting the respective substrates, the method includes depositing stabilized lithium metal particles on the anode and forming a cathode electrode tab coupled to the cathode and an anode electrode tab coupled to the anode. The method also includes coupling the anode and the cathode to form a layered structure. The method further includes winding the layered structure to form a rolled structure and placing the rolled structure in a container. The method additionally includes placing an electrolyte in the container sealing the container with the rolled structure and electrolyte placed therein to form a battery.
    Type: Grant
    Filed: September 7, 2016
    Date of Patent: September 24, 2019
    Assignee: Google LLC
    Inventors: Ramesh C Bhardwaj, Tai Sup Hwang
  • Patent number: 10424777
    Abstract: To provide a cathode active material for a lithium ion secondary battery, which has high packing properties and high volume capacity density, and a method for its production.
    Type: Grant
    Filed: November 5, 2014
    Date of Patent: September 24, 2019
    Assignee: SUMITOMO CHEMICAL CO., LTD.
    Inventors: Satoshi Takamatsu, Yukimitsu Wakasugi, Megumi Uchida