Having Connector Tab Patents (Class 429/211)
  • Patent number: 11056686
    Abstract: Systems and methods for water soluble weak acidic resins as carbon precursors for silicon-dominant anodes may include an electrode coating layer on a current collector, where the electrode coating layer is formed from silicon and pyrolyzed water-soluble acidic polyamide imide as a primary resin carbon precursor. The electrode coating layer may include a pyrolyzed water-based acidic polymer solution additive. The polymer solution additive may include one or more of: polyacrylic acid (PAA) solution, poly (maleic acid, methyl methacrylate/methacrylic acid, butadiene/maleic acid) solutions, and water soluble polyacrylic acid. The electrode coating layer may include conductive additives. The current collector may include a metal foil, where the metal current collector includes one or more of a copper, tungsten, stainless steel, and nickel foil in electrical contact with the electrode coating layer. The electrode coating layer may be more than 70% silicon.
    Type: Grant
    Filed: June 9, 2020
    Date of Patent: July 6, 2021
    Assignee: Enevate Corporation
    Inventors: Younes Ansari, Liwen Ji, Benjamin Park
  • Patent number: 11046797
    Abstract: A disclosed binder composition comprises a copolymer which comprises a nitrile group-containing monomer unit, an acidic group-containing monomer unit and a basic group-containing monomer unit, wherein the proportion of the nitrile group-containing monomer unit in the copolymer is 70.0 mol % or more and 99.0 mol % or less, and wherein the total proportion of the acidic group-containing monomer unit and the basic group-containing monomer unit in the copolymer is 0.8 mol % or more and 10.0 mol % or less.
    Type: Grant
    Filed: March 24, 2017
    Date of Patent: June 29, 2021
    Assignee: ZEON CORPORATION
    Inventors: Kunihiro Goto, Maki Mesuda, Koji Annaka, Takuya Ishii
  • Patent number: 11038193
    Abstract: A battery incudes wound positive and negative electrodes, where the wound positive electrode includes a positive electrode current collector, a first positive electrode active material layer provided on an inner surface of the positive electrode current collector, and a second positive electrode active material layer provided on an outer surface of the positive electrode current collector. An inner circumference side end portion and an outer circumference side end portion of the positive electrode current collector are covered with the first active material layer, and the first positive electrode active material layer includes a low area density portion in a portion facing an inner circumference side end portion of the wound positive electrode.
    Type: Grant
    Filed: December 7, 2018
    Date of Patent: June 15, 2021
    Assignee: Murata Manufacturing Co., Ltd.
    Inventor: Koji Shibutani
  • Patent number: 11031588
    Abstract: Provided are a silicon-based composite anode active material for a secondary battery and an anode including the same. The anode active material for a secondary battery may be a silicon-based composite anode active material, which may include a graphite and a silicon component including two or more selected from the group consisting of Si, Si-M, SiOx, and SiC. The Si-M may be a silicon alloy, and the M may include at least one selected from the group consisting of a transition metal, an alkaline earth metal, a group 13 element, a group 14 element, and a rare earth element.
    Type: Grant
    Filed: September 23, 2019
    Date of Patent: June 8, 2021
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Seung-Min Oh, Yoon Sung Lee, Jung Young Cho, Yeolmae Yeo
  • Patent number: 11024870
    Abstract: The present disclosure provides a secondary battery and an electrode plate thereof. The electrode plate comprises a current collector and an active material layer. The current collector comprises an insulating layer and a first conducting layer provided on a surface of the insulating layer; the first conducting layer has a main portion and a protruding portion connected with the main portion, the main portion is coated with the active material layer, the protruding portion is not coated with the active material layer. The electrode plate further comprises a second conducting layer, the second conducting layer comprises a first portion, the first portion is provided on a surface of the protruding portion away from the insulating layer. The secondary battery comprises an electrode assembly, the electrode assembly comprises the electrode plate.
    Type: Grant
    Filed: February 4, 2019
    Date of Patent: June 1, 2021
    Assignee: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
    Inventors: Wei Li, Zige Zhang, Chengdu Liang, Qingrui Xue, Jing Li, Pengxiang Wang
  • Patent number: 11024874
    Abstract: A lithium secondary battery includes a positive electrode, a negative electrode, a separator, and a nonaqueous electrolyte having lithium-ion conductivity. The positive electrode contains a positive electrode active material containing lithium. The negative electrode faces the positive electrode. The separator is disposed between the positive and negative electrodes. The negative electrode includes a negative electrode current collector. The negative electrode current collector includes a layer and protrusions. The layer has a first surface on which lithium metal is deposited during charge. The protrusions protrude from the first surface. At least one of the protrusions includes a conductive material and an insulative material.
    Type: Grant
    Filed: April 23, 2019
    Date of Patent: June 1, 2021
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Ryohei Miyamae, Akira Kano, Kensuke Nakura
  • Patent number: 11024836
    Abstract: The present invention has an object to provide a positive electrode active material for a non-aqueous electrolyte secondary battery which not only suppresses gelation of a positive electrode mixed material paste upon producing the non-aqueous electrolyte secondary battery but also improves the stability thereof. Provided is the positive electrode active material represented by general formula LisNi1?x?y?zCoxMnyMzO2+? (0?x?0.35, 0?y?0.35, 0?z?0.10, 0.95<s<1.30, and 0???0.2, and M represents at least one element selected from V, Mg, Mo, Nb, Ti, W, and Al) and containing secondary particles formed by agglomeration of primary particles, wherein at least part of the surface of the primary particles thereof is covered with a lithium boron compound, and the amount of redundant lithium hydroxide of the positive electrode active material measured with a neutralization titration is at least 0.003% by mass and up to 0.5% by mass relative to the total of the positive electrode active material.
    Type: Grant
    Filed: May 12, 2017
    Date of Patent: June 1, 2021
    Assignee: SUMITOMO METAL MINING CO., LTD.
    Inventors: Motoaki Saruwatari, Kazuomi Ryoshi
  • Patent number: 11018342
    Abstract: A purpose of the present invention is to provide a binder composition for a secondary battery which improves the charge and discharge efficiency and the cycle characteristics of a battery. The binder composition for a secondary battery of the present invention is characterized by comprising a polyamide-imide comprising a repeating unit represented by chemical formula (1) or a precursor thereof, wherein A is a trivalent group obtained by removing carboxyl groups from a tricarboxylic acid, B is a divalent group obtained by removing amino groups from a diamine, and at least one of A and B is an aliphatic group.
    Type: Grant
    Filed: March 14, 2018
    Date of Patent: May 25, 2021
    Assignee: NEC CORPORATION
    Inventor: Shin Serizawa
  • Patent number: 11018372
    Abstract: A sodium-ion battery includes an electrode and a passivation layer on the electrode material.
    Type: Grant
    Filed: March 8, 2019
    Date of Patent: May 25, 2021
    Assignee: The Regents of the University of California
    Inventors: Gerbrand Ceder, YaoSen Tian, YingZhi Sun, Daniel C. Hannah, Shou-Hang Bo
  • Patent number: 11018341
    Abstract: A purpose of the present invention is to provide a binder composition for a secondary battery which can impart excellent battery characteristics, even when the heat treatment temperature is low. The binder composition for a secondary battery according to the present invention is characterized by comprising a polyamic acid comprising a repeating unit represented by chemical formula (1) and an aromatic compound comprising an electron donating group and an organic acid group, wherein A is a tetravalent group obtained by removing acid anhydride groups from a tetracarboxylic dianhydride, B is a divalent group obtained by removing amino groups from a diamine, and at least one of A and B is an aliphatic group.
    Type: Grant
    Filed: March 14, 2018
    Date of Patent: May 25, 2021
    Assignee: NEC CORPORATION
    Inventor: Shin Serizawa
  • Patent number: 11011750
    Abstract: A method for producing a positive electrode sheet is provided with a positive current collecting foil made of aluminum and a battery positive active material layer containing positive active material particles made of LiNiMn based spinel and applied and dried on the current collecting foil. The positive active material layer includes a first binder made of polyacrylic acid with a molecular weight of 50,000 or less and a second binder made of polyacrylic acid with a molecular weight of 300,000 or more. The first positive electrode paste forming the positive active material layer satisfies expressions (1) to (3): ??1.7??(1) ??0.9??(2) ?+??3.0??(3) where ? is an additive amount of the first binder in pts. wt. and ? is an additive amount of the second binder in pts. wt. when other solid content is 100 pts. wt.
    Type: Grant
    Filed: May 31, 2016
    Date of Patent: May 18, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yukiko Hori, Masanori Kitayoshi
  • Patent number: 11005085
    Abstract: A method for producing an electrode tab according to an embodiment of the present invention may comprise: a step of preparing a thin plate of a strip shape having a first thickness; a step of forming an adhesion part by compressing the thin plate from one end thereof to a second thickness; and a step of forming, from the other end of the thin plate to the adhesion part, a lead tab part formed to have the first thickness, by releasing the compression applied to the adhesion part.
    Type: Grant
    Filed: September 4, 2017
    Date of Patent: May 11, 2021
    Assignee: Samsung SDI Co., Ltd.
    Inventor: Jaewook Lee
  • Patent number: 11005102
    Abstract: The present application relates to a binder for a secondary battery. The binder includes a first copolymer unit including a carboxyl group-containing acrylic monomer and at least one of an acrylic acid derivative monomer and a substituted or unsubstituted styrene and a second copolymer unit including a residue of a polymer azo initiator. A mass ratio of the second copolymer unit relative to a total mass of the first copolymer unit and the second copolymer unit is 10 mass % to 40 mass %.
    Type: Grant
    Filed: June 19, 2019
    Date of Patent: May 11, 2021
    Assignee: SAMSUNG SDI CO., LTD.
    Inventor: Iwao Fukuchi
  • Patent number: 10998541
    Abstract: A method for manufacturing an electrode sheet including an electrode layer on both surfaces of a current collecting foil includes: feeding out an original electrode sheet including an unfinished electrode layer on each surface of the foil from a feeding part; causing a press roll pair to contact with the original sheet fed out to form the unfinished layers into electrode layers; receiving the sheet having passed through the roll pair by a sheet receiving part; and rotating rolls of the roll pair in a feeding direction. The feeding part, roll pair, and receiving part are placed such that the original sheet and the electrode sheet are to be wound on one of the rolls. The rolls are rotated such that a moving speed of cylindrical surface of one roll placed in a position where the sheets are wound thereon is higher than that of the other roll.
    Type: Grant
    Filed: January 15, 2019
    Date of Patent: May 4, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Tomofumi Hirukawa
  • Patent number: 10998553
    Abstract: An electrochemical cell including a positive electrode (e.g., a cathode) and a negative electrode (e.g., an anode), at least one of which includes an integrated ceramic separator. An integrated ceramic separator may include a plurality of ceramic particles. In some examples, an interlocking region may be disposed between the integrated ceramic separator layer and a corresponding electrode layer, the region including a non-planar boundary between the two layers. In some examples, the electrochemical cell includes a polyolefin separator disposed between the positive electrode and the negative electrode. In some examples, both the positive electrode and the negative electrode include an integrated ceramic separator. In these examples, the positive electrode and the negative electrode may be calendered together such that the integrated separator layers merge and become indistinguishable from each other.
    Type: Grant
    Filed: December 26, 2019
    Date of Patent: May 4, 2021
    Assignee: EnPower, Inc.
    Inventors: Adrian Yao, Jonathan Hwang, Mayuresh Keskar, Raymundo Roig
  • Patent number: 10991973
    Abstract: A lithium ion secondary battery including a plurality of electrode laminates, each electrode laminate including a positive electrode, a separator, and a negative electrode being alternatively laminated, each positive electrode and negative electrode having respective positive and negative electrode tabs protruding from a respective line segment, the positive electrode tabs of adjacent electrode laminates face each other and are connected to each other to provide a positive electrode tab bundle and the negative electrode tabs of the adjacent electrode laminates face each other and are connected to each other to provide a negative electrode tab bundle.
    Type: Grant
    Filed: December 21, 2017
    Date of Patent: April 27, 2021
    Assignee: LG CHEM, LTD.
    Inventors: Myung Ki Lee, Jooyong Song, Hee Seok Jeong, Ji Hee Ahn
  • Patent number: 10991948
    Abstract: Surface-treated copper foils including a copper foil having a first side and an opposite-facing second side and two treatment layers disposed on the first side and the second side respectively are described. Each treatment layer provides a treated surface which exhibit a ten-point average roughness Rz in a range of 1.2 ?m to 4.6 ?m and a peak density (Spd) in a range of 490,000 to 1,080,000 mm?2. Additionally, the Cr content in each of the treatment layers is a range of 25 to 70 ?g/dm2. The surface-treated copper foils have excellent electrode active material coating properties, such as good adhesion and uniformity.
    Type: Grant
    Filed: March 20, 2020
    Date of Patent: April 27, 2021
    Assignee: CHANG CHUN PETROCHEMICAL CO., LTD.
    Inventors: Kuei-Sen Cheng, Yao-Sheng Lai, Jui-Chang Chou
  • Patent number: 10991985
    Abstract: A secondary battery of sealed structure disclosed herein is provided with a stacked electrode body inside a battery case. At a region closer to a lid body of the battery case when a rectangular positive electrode sheet and rectangular negative electrode sheet that make up the electrode body is bisected with respect to a direction from the lid body to a bottom surface of a case body, a positive electrode collector exposed portion and a negative electrode collector exposed portion, which do not have a positive or negative electrode active material layer, are formed, in the rectangular positive electrode sheet and negative electrode sheet, on the inward side of the rectangular positive and negative electrode sheets, in such a manner that one side of each exposed portion makes up part of an edge, of the positive and negative electrode sheets, neighboring and opposing the lid body.
    Type: Grant
    Filed: February 14, 2019
    Date of Patent: April 27, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Satoshi Nakashima
  • Patent number: 10985375
    Abstract: Provided is a slurry composition for a non-aqueous secondary battery positive electrode that has excellent stability and enables formation of a positive electrode mixed material layer that causes a non-aqueous secondary battery to display excellent output characteristics. The slurry composition contains a positive electrode active material and a copolymer. The proportion constituted by nickel among transition metal in the positive electrode active material is at least 30.0 mol % and not more than 100.0 mol %. The copolymer includes a nitrile group-containing monomer unit in a proportion of at least 70.0 mass % and not more than 96.0 mass % and a basic group-containing monomer unit in a proportion of at least 0.1 mass % and not more than 5.0 mass %.
    Type: Grant
    Filed: September 8, 2017
    Date of Patent: April 20, 2021
    Assignee: ZEON CORPORATION
    Inventors: Koji Annaka, Takuya Ishii
  • Patent number: 10985402
    Abstract: A battery includes a first positive electrode collector, a first negative electrode collector, a first power generating element, a second power generating element, and a first insulating part. The first and second power generating elements each include a positive electrode active material-containing layer, a negative electrode active material-containing layer, and an inorganic solid electrolyte-containing layer. In each of the first and second power generating elements, the inorganic solid electrolyte layer is in contact with the positive electrode active material-containing layer and the negative electrode active material-containing layer. The positive electrode active material layers of the first and second power generating elements are in contact with the first positive electrode collector. The negative electrode active material layers of the first and second power generating elements are in indirect contact with the first negative electrode collector.
    Type: Grant
    Filed: March 6, 2019
    Date of Patent: April 20, 2021
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Izuru Sasaki, Junichi Hibino
  • Patent number: 10950857
    Abstract: Provided are electrochemical cells that include as a cathode active material within the cathode of the cell secondary particles that provide excellent capacity and improved cycle life. The particles are characterized by grain boundaries between adjacent crystallites of the plurality of crystallites and comprising a second composition having a layered ?-NaFeO2-type structure, a cubic structure, a spinel structure, or a combination thereof, wherein the electrochemically active cathode active material has an initial discharge capacity of 180 mAh/g or greater; and wherein the electrochemical cell has an impedance growth at 4.2V less than 50% for greater than 100 cycles at 45° C.
    Type: Grant
    Filed: January 17, 2019
    Date of Patent: March 16, 2021
    Assignee: CAMX Power LLC
    Inventors: Adrian W. Pullen, David Ofer, Suresh Sriramulu, Kenan Sahin, Jane Rempel
  • Patent number: 10933401
    Abstract: The present invention relates to a magnetic cesium adsorbent, a preparation method therefor, and a cesium removal method using the same, the preparation method comprising the steps of: (a) preparing a metal hexacyanoferrate; and (b) hydrothermally reacting the metal hexacyanoferrate so as to prepare a metal hexacyanoferrate having a rhombohedral crystal structure.
    Type: Grant
    Filed: July 4, 2017
    Date of Patent: March 2, 2021
    Assignee: KOREA ATOMIC ENERGY RESEARCH INSTITUTE
    Inventors: Tae Hong Park, Young Jin Cho, Sang Eun Bae, Sang Ho Lim, Jai Il Park, Young Sang Youn, Jei Won Yeon
  • Patent number: 10923721
    Abstract: A negative electrode for a rechargeable lithium battery may include a negative electrode active mass layer including a negative active material having a Young's modulus of about 10 GPa to about 35 GPa and having an active mass density of greater than or equal to about 1.65 g/cc and a current density of greater than or equal to about 3.2 mAh/cm2.
    Type: Grant
    Filed: October 19, 2016
    Date of Patent: February 16, 2021
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Seongjae Ko, Jae Hou Nah
  • Patent number: 10916778
    Abstract: Disclosed is a secondary battery which can improve safety by forming a carbon coating layer and an electrode active material layer on an electrode plate such that ends of the carbon coating layer and the electrode active material layer are in different positions.
    Type: Grant
    Filed: July 17, 2017
    Date of Patent: February 9, 2021
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Young San Ko, Min Jae Kim, Ki Jun Kim, Chae Woong Cho, Jun Sik Lee
  • Patent number: 10910643
    Abstract: According to an embodiment, a nonaqueous electrolyte battery is provided. The nonaqueous electrolyte includes a negative electrode, a positive electrode and a nonaqueous electrolyte. The negative electrode includes negative electrode active material particles. The negative electrode active material particles include a spinel-type lithium titanate. The negative electrode has such a surface state that a ratio ALi/ATi of an Li atom abundance ratio ALi to a Ti atom abundance ratio ATi, according to a photoelectron spectroscopic measurement for a surface, is increased at a rate of 0.002 to 0.02 per cycle in a charge-and-discharge cycle test under the predetermined condition.
    Type: Grant
    Filed: June 3, 2019
    Date of Patent: February 2, 2021
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Hiromichi Kuriyama, Hidesato Saruwatari, Hideki Satake, Dai Yamamoto
  • Patent number: 10903472
    Abstract: The present disclosure provides an electrode tab coupling member and an electrode tab coupling assembly including the same that can solve the limitations of existing arts and the technical issues demanded from the past.
    Type: Grant
    Filed: March 23, 2018
    Date of Patent: January 26, 2021
    Assignee: LG Chem, Ltd.
    Inventor: Hyun Wook Jeon
  • Patent number: 10899632
    Abstract: The present invention relates to a method of producing a sodium iron(II)-hexacyanoferrate(II) (Na2-xFe[Fe(CN)6].mH2O), where x is <0.4) material commonly referred to as Prussian White. The method comprises the steps of acid decomposition of Na4Fe(CN)6.10H2O to a powder of Na2-xFe[Fe(CN)6].mH2O, drying and enriching the sodium content in the Na2-xFe[Fe(CN)6].mH2O powder by mixing the powder with a saturated or supersaturated solution of a reducing agent containing sodium in dry solvent under an inert gas. The steps of acid decomposition and enriching the sodium content are performed under non-hydrothermal conditions.
    Type: Grant
    Filed: September 21, 2017
    Date of Patent: January 26, 2021
    Assignee: ALTRIS AB
    Inventors: William Brant, Ronnie Mogensen, Reza Younesi, Féres Dehchar
  • Patent number: 10905011
    Abstract: A state detecting device which can be applied even in a severe environment. The state detecting device includes a chargeable all-solid-state battery, a piezoelectric element which supplies charging power to the all-solid-state battery, and an integrated circuit including various sensors which operate with electric power supplied from the all-solid-state battery. The all-solid-state battery, the piezoelectric element, and the integrated circuit are mounted on one surface of a flexible substrate. The flexible substrate is attached to a flexible object which is either an object to be measured or constitutes at least part of an inner surface of a space to be measured.
    Type: Grant
    Filed: March 16, 2018
    Date of Patent: January 26, 2021
    Assignee: TDK Corporation
    Inventors: Masafumi Kami, Hiroshi Kobayashi, Tamon Kasajima
  • Patent number: 10873082
    Abstract: A negative electrode active material including a negative electrode active material particle; the negative electrode active material particle including a silicon compound shown by SiOx (0.5?x?1.6), wherein at least part of the Si4+ contained in the negative electrode active material particle is to be changed to at least one state selected from valence states of Siy+ (y is any of 0, 1, 2, and 3) in occlusion of Li in the negative electrode active material. This provides a negative electrode active material that is capable of increasing battery capacity and improving cycle performance when it is used as a negative electrode active material for a secondary battery.
    Type: Grant
    Filed: May 16, 2017
    Date of Patent: December 22, 2020
    Assignee: SHIN-ETSU CHEMICAL CO., LTD.
    Inventors: Takakazu Hirose, Reiko Sakai
  • Patent number: 10873103
    Abstract: An electrode assembly and rechargeable battery, the electrode assembly including a first electrode including a first sub-electrode in which an active material is on both surfaces of a base substrate, a second sub-electrode in which the active material is on one surface of the base substrate, and a first electrode uncoated region extending from the first sub-electrode; a second electrode including a third sub-electrode in which an active material is on both surfaces of a base substrate, a fourth sub-electrode in which the active material is on one surface of the base substrate, and a second electrode uncoated region extending from the third sub-electrode; and a separator between the electrodes, wherein the active material at the third sub-electrode includes a protruding portion protruding therefrom, and a distance from the end of the active material at sides based on the third sub-electrode to the protruding portion is 0 to 3 mm.
    Type: Grant
    Filed: February 15, 2019
    Date of Patent: December 22, 2020
    Assignee: SAMSUNG SDI CO., LTD.
    Inventors: Youngsan Ko, Kijun Kim, Yuhyun Kim, Junsik Lee, Woonsuk Jang
  • Patent number: 10862119
    Abstract: The present invention relates to a cathode active material for a secondary battery and a preparation method thereof, and more particularly, to a lithium composite oxide including a secondary particle formed as primary particles cohere, in which a manganese (Mn) oxide is present in the periphery of the primary particles, a concentration of an Mn oxide in the primary particle has a concentration gradient from the center of the primary particle to a surface of the particle, a concentration of an Mn oxide in the secondary particle has a concentration gradient from a surface of the secondary particle to the center thereof, and a lithium ion migration path is formed in the primary particle, and a preparation method thereof. A secondary battery including the cathode active material for a secondary battery may have high safety, while exhibiting high capacity and high output.
    Type: Grant
    Filed: November 15, 2018
    Date of Patent: December 8, 2020
    Assignee: ECOPRO BM CO., LTD.
    Inventors: Moon Ho Choi, Jong Hwan Park, Gyeong Jae Heo, Hyun Jong Yu, Kyoung Jun Lee, Jung Bae Park, Seung Hyun Choi
  • Patent number: 10833323
    Abstract: A negative electrode active material for a non-aqueous electrolyte secondary battery, wherein the negative electrode active material includes negative electrode active material particles, the negative electrode active material particles include a silicon compound particle which includes a silicon compound including oxygen, the silicon compound particle includes a Li compound, and the silicon compound particle is adhered with a phosphate salt in an outermost surface layer thereof. With this, the negative electrode active material which is high in the capacity and the stability to aqueous slurry as well as excellent in the cycle characteristic and the first efficiency can be provided.
    Type: Grant
    Filed: January 30, 2017
    Date of Patent: November 10, 2020
    Assignee: SHIN-ETSU CHEMICAL CO., LTD.
    Inventors: Takakazu Hirose, Hiromichi Kamo, Takumi Matsuno, Reiko Sakai
  • Patent number: 10826059
    Abstract: A positive active material for a rechargeable lithium battery includes a first oxide particle having a layered structure and a second oxide layer located in a surface of the first oxide particle and including a second oxide represented by the following Chemical Formula 1: MaLbOc, wherein in Chemical Formula 1, 0<a?3, 1?b?2, 3.8?c?4.2, M is at least one element selected from the group of Mg, Al, Ga, and combinations thereof, and L is at least one element selected from of group Ti, Zr, and combinations thereof.
    Type: Grant
    Filed: January 24, 2019
    Date of Patent: November 3, 2020
    Assignee: SAMSUNG SDI CO., LTD.
    Inventors: Jae-Hyun Shim, Ki-Soo Lee, Se-Hee Lee, Hyeon-Ah Ju
  • Patent number: 10826110
    Abstract: A positive electrode active material for a lithium ion secondary battery is lithium vanadium phosphate represented by a following composition expression (1) and in which a peak intensity ((002)int/(201)int) of a (002) plane normalized with respect to a peak intensity of a (201) plane and a peak intensity ((102)int/(201)int) of a (102) plane normalized with respect to a peak intensity of the (201) plane in an X-ray diffraction pattern satisfy 0.35?(002)int/(201)int?0.53 and 0.46?(102)int/(201)int?0.63, respectively, LixVOPO4 . . . (1).
    Type: Grant
    Filed: March 15, 2018
    Date of Patent: November 3, 2020
    Assignee: TDK CORPORATION
    Inventors: Junpei Shitaba, Hideaki Seki, Masahiro Tsuchiya
  • Patent number: 10811728
    Abstract: The present invention relates to a lithium-sulphur cell comprising an anode comprising lithium metal or lithium metal alloy;a cathode comprising a mixture of electroactive sulphur material and solid electroconductive material; and a liquid electrolyte comprising at least one lithium salt and a solvent comprising a dinitrile.
    Type: Grant
    Filed: May 21, 2015
    Date of Patent: October 20, 2020
    Assignees: Oxis Energy Ltd., Arkema France
    Inventors: Sebastian Desilani, Ashley Cooke, Gregory Schmidt
  • Patent number: 10797345
    Abstract: An object of the present invention is to further lower the viscosity of a sulfur compound solid electrolyte dispersion paste while suppressing sedimentation of a sulfur compound solid electrolyte. Provided is a sulfur compound solid electrolyte dispersion paste for secondary batteries, containing a dispersion resin (A), a sulfur compound solid electrolyte (B) and a solvent (C), wherein the dispersion resin (A) contains at least one type of acrylic resin (a) having a weight-average molecular weight of 3000 or higher.
    Type: Grant
    Filed: September 11, 2018
    Date of Patent: October 6, 2020
    Assignees: KANSAI PAINT CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Naoyuki Iwata, Atsushi Tsukamoto, Masakazu Tamaru, Hiroyuki Yamaguchi, Satoshi Yoshida, Yuki Ishigaki
  • Patent number: 10790505
    Abstract: Electrochemical cells of the present disclosure may include one or more multilayered electrodes. One or both multilayered electrodes may be configured such that a second layer farther from the current collector has a higher resistance to densification than a first layer closer to the current collector. This may be achieved by including a plurality of non-active ceramic particles in the second layer. Accordingly, calendering of the electrode results in a greater compression of the first layer, and a beneficial porosity profile is created. This may improve the ionic conductivity of the electrode, as compared with known systems.
    Type: Grant
    Filed: September 25, 2019
    Date of Patent: September 29, 2020
    Assignee: EnPower, Inc.
    Inventors: Adrian Yao, Jonathan Hwang
  • Patent number: 10784497
    Abstract: The present invention is directed to battery system and operation thereof. In an embodiment, lithium material is plated onto the anode region of a lithium secondary battery cell by a pulsed current. The pulse current may have both positive and negative polarity. One of the polarities causes lithium material to plate onto the anode region, and the opposite polarity causes lithium dendrites to be removed. There are other embodiments as well.
    Type: Grant
    Filed: August 7, 2017
    Date of Patent: September 22, 2020
    Assignee: QuantumScape Corporation
    Inventors: Timothy Holme, Marie Mayer, Ghyrn Loveness, Zhebo Chen, Rainer Fasching
  • Patent number: 10781110
    Abstract: Disclosed is a method for producing a cathode active material precursor for a sodium secondary battery by using a coprecipitation technique and a cathode active material precursor for a sodium secondary battery produced thereby, and a cathode active material for a sodium secondary battery using the cathode active material precursor for a sodium secondary battery and a method for producing the same.
    Type: Grant
    Filed: May 30, 2018
    Date of Patent: September 22, 2020
    Assignee: IUCF-HYU(INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY)
    Inventors: Yang Kook Sun, Seung Min Oh, Min Woo Jang
  • Patent number: 10777819
    Abstract: The present invention aims to provide a composition for a lithium secondary battery electrode which is excellent in dispersibility of an active material and adhesiveness, capable of maintaining an appropriate viscosity for a long period of time, and capable of providing a high-capacity lithium secondary battery even when the amount of a binder is small. Provided is a composition for a lithium secondary battery electrode including: an active material; a polyvinyl acetal resin; and an organic solvent, the polyvinyl acetal resin having a structural unit having a hydroxyl group represented by the following formula (1), a structural unit having an acetal group represented by the following formula (2), and a structural unit having a carboxyl group, the polyvinyl acetal resin containing 45 to 95 mol % of the structural unit having a hydroxyl group represented by the following formula (1): where R1 represents a hydrogen atom or a C1-C20 alkyl group.
    Type: Grant
    Filed: March 30, 2017
    Date of Patent: September 15, 2020
    Assignee: SEKISUI CHEMICAL CO., LTD.
    Inventor: Ayako Oota
  • Patent number: 10756322
    Abstract: Provided are a composite separator for a secondary battery including: a porous substrate; and a coating layer, formed on the porous substrate, by thermally curing aqueous slurry including inorganic particles, first binder particles, a second binder, and a thermal curing agent, wherein the first binder particles contain a copolymer of a monomer mixture including an acrylamide-based monomer, a vinyl cyanide-based monomer, an acrylic monomer having a carboxyl group, and an acrylic monomer having a hydroxyl group, and a lithium secondary battery including the same.
    Type: Grant
    Filed: November 28, 2018
    Date of Patent: August 25, 2020
    Assignees: SK INNOVATION CO., LTD., SK IE TECHNOLOGY CO., LTD.
    Inventors: Yun Bong Kim, Won Sub Kwack, Hye Jin Kim, Su Ji Lee, Kyu Young Cho
  • Patent number: 10756391
    Abstract: An energy storage device having improved safety is provided, and methods of manufacturing the same. The device can be an electrochemical cell that includes: a positive electrode including a positive electrode active material in electrically conductive contact with a positive electrode current collector; a negative electrode including a negative electrode active material in electrically conductive contact with a negative electrode current collector and a negative electrode tab connected to the negative electrode current collector and a negative electrically conductive member; an electrically insulative and ion conductive medium in ionically conductive contact with the positive electrode and the negative electrode; and an outer case containing the positive electrode, negative electrode and electrically insulative and ion conductive medium, where the outer case comprises a scored area connected to a cooling plate.
    Type: Grant
    Filed: October 23, 2018
    Date of Patent: August 25, 2020
    Assignee: NIO USA, Inc.
    Inventors: Marc W. Juzkow, Adam H. Ing
  • Patent number: 10741833
    Abstract: There is provided a negative electrode active material for a nonaqueous electrolyte secondary battery, the negative electrode active material including a base particle containing Si and SiO2, a mixed phase coating that covers a surface of the base particle and contains SiO2 and carbon, and a carbon coating that covers a surface of the mixed phase coating. The base particle is preferably formed of SiOX (0.5?X?1.5). The mixed phase coating preferably contains carbon dispersed in a phase formed of SiO2. The cycle characteristics of a nonaqueous electrolyte secondary battery including negative electrode active material particles containing Si and SiO2 are improved.
    Type: Grant
    Filed: August 1, 2018
    Date of Patent: August 11, 2020
    Assignee: SANYO Electric Co., Ltd.
    Inventors: Tatsuya Akira, Hiroshi Minami, Taizou Sunano, Yoshio Kato
  • Patent number: 10734640
    Abstract: Much improved energy storage is provided by exploiting the phase transition between different states or phases of a condensed matter “working material.” Such phases constitute the high energy “charged” and low energy “discharged” state of the battery. The two phases conduct electricity in a different manner. This is reflected by different chemical potentials that determine the open circuit voltage of the battery. Such a battery can have an energy density that easily exceeds that of current chemical batteries and super capacitors.
    Type: Grant
    Filed: August 31, 2018
    Date of Patent: August 4, 2020
    Assignee: Polymorph Quantum Energy
    Inventor: Stewart Edward Barnes
  • Patent number: 10734654
    Abstract: A secondary battery includes: an electrode body including an electrode main body, a collector foil protrusion section, and a collector foil connection portion; a first collector terminal including a first extension part that is welded to the collector foil connection portion; and a second collector terminal that is a member separate from the first collector terminal and includes a second extension part welded to the collector foil connection portion. The first extension part and the second extension part are located on the opposite sides of the collector foil connection portion. The secondary battery includes a welded joint at which both the first extension part and the second extension part are welded to the collector foil connection portion such that the first extension part, the second extension part, and the collector foil connection portion are united. The first collector terminal and the second collector terminal are united through the welded joint.
    Type: Grant
    Filed: February 2, 2018
    Date of Patent: August 4, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Satomi Yamamoto, Mizuho Matsumoto, Hiroshi Takamatsu, Hiroaki Imanishi, Ichiro Murata, Kiyomi Kozuki
  • Patent number: 10720648
    Abstract: Methods and apparatuses for protecting the edge of electrodes and other layers in electrochemical cells are generally described.
    Type: Grant
    Filed: March 16, 2018
    Date of Patent: July 21, 2020
    Assignee: Sion Power Corporation
    Inventors: Enic Azalia Quero-Mieres, Zhaohui Liao, Chariclea Scordilis-Kelley, Clellie Winter, Akmeemana Anoma Mudalige
  • Patent number: 10714746
    Abstract: A conductive composition for electrode is provided that is excellent in conductivity and dispersibility. Further, an electrode for lithium ion secondary battery with lower plate resistance and a lithium ion secondary battery excellent in rate characteristics are provided that use this conductive composition. A conductive composition for electrode, including: carbon nanofiber with a median diameter D50 value by volume from 0.1 to 8 pm; an active material; and a binder enables production of an electrode for lithium ion secondary battery with lower plate resistance and a lithium ion secondary battery excellent in rate characteristics.
    Type: Grant
    Filed: August 6, 2015
    Date of Patent: July 14, 2020
    Assignee: Denka Company Limited
    Inventors: Yoko Horikoshi, Toru Arai, Hitoshi Kaneko, Tatsuya Nagai, Ayumu Tsukamoto
  • Patent number: 10714737
    Abstract: A main object of the present disclosure is to provide an all solid lithium battery with excellent capacity durability. The above object is achieved by providing an anode layer to be used in an all solid lithium battery, the anode layer comprising: a metal particle capable of being alloyed with Li, as an active material; and the metal particle has two kinds or more of crystal orientation in one particle.
    Type: Grant
    Filed: December 22, 2017
    Date of Patent: July 14, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Mitsutoshi Otaki, Norihiro Ose, Shigenori Hama
  • Patent number: 10707490
    Abstract: A polymer compound, which is used as a binder for a negative electrode of an electricity storage device, is obtained by condensation of a vinyl polymer that contains a carboxyl group and a third compound that is selected from among an aromatic multifunctional amine, phosphorous acid, phosphorous acid ester, trialkoxysilane, and phosphoric acid.
    Type: Grant
    Filed: October 30, 2015
    Date of Patent: July 7, 2020
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Yusuke Sugiyama, Takeshi Kondo, Nobuhiro Goda, Masakazu Murase
  • Patent number: 10707524
    Abstract: To provide a graphene compound having an insulating property and an affinity for lithium ions. To increase the molecular weight of a substituent included in a graphene compound. To provide a graphene compound including a chain group containing an ether bond or an ester bond. To provide a graphene compound including a substituent containing one or more branches. To provide a graphene compound including a substituent including at least one of an ester bond and an amide bond.
    Type: Grant
    Filed: September 29, 2017
    Date of Patent: July 7, 2020
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventor: Masaki Yamakaji