Alkalated Cobalt (co) Chalcogenide Patents (Class 429/231.3)
  • Patent number: 11569502
    Abstract: When a layered rock-salt type cathode active material and a sulfide solid electrolyte are mixed to be a cathode mixture, and an all solid-state battery is obtained using this mixture, oxygen is released from the cathode active material when the battery is charged, and the sulfide solid electrolyte is oxidized, increasing the battery internal resistance. To increase the concentration of cobalt inside the active material, and at the same time to lower the concentration of cobalt of the surface of the cathode active material, to suppress oxygen release in charging, specifically, a cathode mixture includes: a cathode active material; and a sulfide solid electrolyte, wherein the cathode active material has a layered rock-salt crystal phase, and is made of a composite oxide containing Li, Ni, Co, and Mn, and the concentration of cobalt inside the cathode active material is higher than that of a surface of the cathode active material.
    Type: Grant
    Filed: November 19, 2018
    Date of Patent: January 31, 2023
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Daichi Kosaka, Jun Yoshida
  • Patent number: 11563204
    Abstract: According to one embodiment, an electrode includes a current collector and an active material layer. The active material layer is disposed on at least one of faces of the current collector. The active material layer comprises active materials which include at least a cobalt-containing oxide and a lithium nickel manganese oxide. A ratio of a weight of the cobalt-containing oxide to a total of weights of the cobalt-containing oxide and the lithium nickel manganese oxide is 5 wt % or more and 40 wt % or less.
    Type: Grant
    Filed: October 30, 2019
    Date of Patent: January 24, 2023
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yasunobu Yamashita, Shinsuke Matsuno, Norio Takami, Hiroki Inagaki
  • Patent number: 11552287
    Abstract: The positive electrode active material with lithium composite oxide A containing W and Ni and W-free lithium composite oxide B containing Ni. Regarding the lithium composite oxide A, the proportion of Ni relative to the total moles of metal elements except for lithium is 30 to 60 mol %, 50% particle size D50 is 2 to 6 ?m, 10% particle size D10 is 1.0 ?m or more, and 90% particle size D90 is 6.8 ?m or less. Regarding the lithium composite oxide B, the proportion of Ni relative to the total moles of metal elements except for lithium is 50 to 95 mol %, 50% particle size D50 is 10 to 22 ?m, 10% particle size D10 is 7.0 ?m or more, and 90% particle size D90 is 22.5 ?m or less. The mass ratio of the lithium composite oxide B to the lithium composite oxide A is 1:1 to 5.7:1.
    Type: Grant
    Filed: December 14, 2018
    Date of Patent: January 10, 2023
    Assignees: PANASONIC HOLDINGS CORPORATION, SANYO Electric Co., Ltd.
    Inventors: Hidekazu Hiratsuka, Takuo Yoneda
  • Patent number: 11515527
    Abstract: A positive electrode imparts secondary battery with low temperature output characteristics, high temperature cycle characteristics and durability against high voltage. A positive electrode of secondary battery includes positive electrode current collector and positive electrode active substance layer on positive electrode current collector. The positive electrode active substance layer contains positive electrode active substance particles and oxide particles which are dispersed in positive electrode active substance layer as separate particles from positive electrode active substance particles. The positive electrode active substance particles each include coating of titanium-containing compound at the surface. The titanium-containing compound in coating is at least one compound selected from group consisting of TiO2, TinO2n?1, wherein n is integer of 3 or more, and oxides containing Li and Ti.
    Type: Grant
    Filed: May 26, 2020
    Date of Patent: November 29, 2022
    Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, NATIONAL UNIVERSITY CORPORATION OKAYAMA UNIVERSITY
    Inventors: Daisuke Horikawa, Yuji Yamamoto, Takashi Teranishi
  • Patent number: 11508964
    Abstract: Disclosed is a lithium complex oxide and method of manufacturing the same, more particularly, a lithium complex oxide effective in improving the characteristics of capacity, resistance, and lifetime with reduced residual lithium and with different interplanar distances of crystalline structure between a primary particle locating in an internal part of secondary particle and a primary particle locating on the surface part of the secondary particle, and a method of preparing the same.
    Type: Grant
    Filed: December 16, 2020
    Date of Patent: November 22, 2022
    Assignee: ECOPRO BM CO., LTD.
    Inventors: Moon Ho Choi, Jong Seung Shin, Dong Hee Kim, Suk Yong Jeon, Hyun Jong Yu, Kyoung Jun Lee, Young Nam Park
  • Patent number: 11502297
    Abstract: Disclosed is a lithium complex oxide and method of manufacturing the same, more particularly, a lithium complex oxide effective in improving the characteristics of capacity, resistance, and lifetime with reduced residual lithium and with different interplanar distances of crystalline structure between a primary particle locating in an internal part of secondary particle and a primary particle locating on the surface part of the secondary particle, and a method of preparing the same.
    Type: Grant
    Filed: December 16, 2020
    Date of Patent: November 15, 2022
    Assignee: ECOPRO BM CO., LTD.
    Inventors: Moon Ho Choi, Jong Seung Shin, Dong Hee Kim, Suk Yong Jeon, Hyun Jong Yu, Kyoung Jun Lee, Young Nam Park
  • Patent number: 11489151
    Abstract: A positive electrode active material particle with little deterioration is provided. A power storage device with little deterioration is provided. A highly safe power storage device is provided. The positive electrode active material particle includes a first crystal grain, a second crystal grain, and a crystal grain boundary positioned between the crystal grain and the second crystal grain; the first crystal grain and the second crystal grain include lithium, a transition metal, and oxygen; the crystal grain boundary includes magnesium and oxygen; and the positive electrode active material particle includes a region where the ratio of the atomic concentration of magnesium in the crystal grain boundary to the atomic concentration of the transition metal in first crystal grain and the second crystal grain is greater than or equal to 0.010 and less than or equal to 0.50.
    Type: Grant
    Filed: May 1, 2018
    Date of Patent: November 1, 2022
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Masahiro Takahashi, Teruaki Ochiai, Yohei Momma, Ayae Tsuruta
  • Patent number: 11444274
    Abstract: A positive electrode active material particle with little deterioration is provided. A power storage device with little deterioration is provided. A highly safe power storage device is provided. The positive electrode active material particle includes a first crystal grain, a second crystal grain; and a crystal grain boundary positioned between the crystal grain and the second crystal grain; the first crystal grain and the second crystal grain include lithium, a transition metal, and oxygen; the crystal grain boundary includes magnesium and oxygen; and the positive electrode active material particle includes a region where the ratio of the atomic concentration of magnesium in the crystal grain boundary to the atomic concentration of the transition metal in first crystal grain and the second crystal grain is greater than or equal to 0.010 and less than or equal to 0.50.
    Type: Grant
    Filed: June 29, 2020
    Date of Patent: September 13, 2022
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Masahiro Takahashi, Teruaki Ochiai, Yohei Momma, Ayae Tsuruta
  • Patent number: 11302918
    Abstract: To provide a cathode active material with which it is possible to obtain a lithium ion secondary battery having a high discharge capacity and being excellent in the cycle characteristic even after 50 cycles; a positive electrode using it; and a lithium ion secondary battery. A cathode active material, which comprises a lithium-containing composite oxide represented by the formula: aLi(L1/3Mn2/3)O2.(1?a)LiMO2 wherein M is at least one transition metal element selected from Ni, Co and Mn, and 0<a<1; wherein when the lithium-containing composite oxide is electrochemically oxidized to a potential of 4.5 V vs. Li/Li+, in an X-ray diffraction pattern, the integral breadth of a peak of (003) plane assigned to a crystal structure with space group R-3m is at most 0.38 deg, and the integral breadth of a peak of (104) plane assigned to a crystal structure with space group R-3m is at most 0.54 deg.
    Type: Grant
    Filed: February 3, 2017
    Date of Patent: April 12, 2022
    Assignee: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventor: Tomohiro Sakai
  • Patent number: 11271249
    Abstract: This application provides a lithium-ion battery and an apparatus. The lithium-ion battery includes an electrode assembly and an electrolyte. The electrode assembly includes a positive electrode plate, a negative electrode plate, and a separator. A positive active material of the positive electrode plate includes Lix1Coy1M1-y1O2-z1Qz1, where 0.5?x1?1.2, 0.8?y1<1.0, 0?z1?0.1, M is selected from one or more of Al, Ti, Zr, Y, and Mg, and Q is selected from one or more of F, Cl, and S. The electrolyte contains an additive A that is a polynitrile six-membered nitrogen-heterocyclic compound with a relatively low oxidation potential. The lithium-ion battery has superb cycle performance and storage performance, especially under high-temperature and high-voltage conditions.
    Type: Grant
    Filed: December 13, 2019
    Date of Patent: March 8, 2022
    Assignee: Contemporary Amperex Technology Co., Limited
    Inventors: Tiancheng Yi, Chunhua Hu, Shushi Dou, Yao Jiang, Chengdu Liang
  • Patent number: 11271202
    Abstract: A positive active material for use in a positive electrode and a rechargeable lithium battery includes a lithium cobalt oxide including a secondary particle having an average particle diameter of about 15 ?m to about 25 ?m, wherein the secondary particle includes a plurality of primary particles having an average particle diameter of about 2 ?m to about 10 ?m, and the positive active material has a pellet density of greater than or equal to about 3.80 g/cm3. A method of manufacturing the positive active material includes heat-treating a cobalt-containing compound at a temperature of greater than or equal to about 900° C. to form a cobalt oxide comprising Co3O4 and CoO, and reacting the cobalt oxide with a lithium compound to prepare the lithium cobalt oxide.
    Type: Grant
    Filed: August 21, 2019
    Date of Patent: March 8, 2022
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Soonkie Hong, Young-Ki Kim, Soonrewl Lee, Young-Hun Lee, Jiyeon Jang, Ickkyu Choi, Mingzi Hong
  • Patent number: 11245107
    Abstract: Provided is a positive electrode mixture for a secondary battery, the positive electrode mixture allowing provision of a secondary battery that exhibits a high capacity maintenance rate in a charge-discharge cycle. The positive electrode mixture for a secondary battery comprises a positive electrode active material, a binder, and an organic acid, wherein the positive electrode active material comprises a lithium nickel complex oxide having a layered crystal structure, the binder comprises a vinylidene fluoride-based polymer, and when a solution prepared by suspending the positive electrode active material in pure water has a pH of A, and the content of the organic acid per 100 parts by mass of the positive electrode active material is B parts by mass, A and B satisfy the following expression (1).
    Type: Grant
    Filed: December 9, 2016
    Date of Patent: February 8, 2022
    Assignee: Envision AESC Japan Ltd.
    Inventors: Masaaki Matsuu, Ai Fujisawa
  • Patent number: 11228034
    Abstract: A positive active material for a rechargeable lithium battery includes a lithium nickel composite oxide having an I(003)/I(104) ratio of greater than or equal to about 0.92 and less than or equal to about 1.02 in X-ray diffraction, wherein the I(003)/I(104) ratio is a ratio of a diffraction peak intensity I(003) of a (003) phase and a diffraction peak intensity I(104) of a (104) phase. The lithium nickel composite oxide includes lithium and a nickel-containing metal, and nickel is present in an amount of greater than or equal to about 80 atm % based on the total atom amount of the nickel-containing metal. A rechargeable lithium battery includes the positive active material.
    Type: Grant
    Filed: December 7, 2015
    Date of Patent: January 18, 2022
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Yuki Takei, Masatsugu Nakano
  • Patent number: 11183707
    Abstract: An anode material used for a lithium-ion battery utilizing a greater part of the storage capacity includes particles in outer dense layer, then inner layer, and then particle core. The outer dense layer is evenly enriched with an M element and an A element, the enrichment decreasing from the outside towards the core. The particle core does include the M element and the A element at a concentration greater than zero and having an average distribution. The M element includes Al, or Al and at least one of Mg, Ti, Zr, Mn. The A element includes F, or F and at least one of B, P, and N. A method for manufacturing the anode material and a lithium-ion battery are also disclosed.
    Type: Grant
    Filed: July 10, 2019
    Date of Patent: November 23, 2021
    Assignee: XTC New Energy Materials(Xiamen) LTD.
    Inventors: Lei-Ying Zeng, Jian Zhang, Ze-Yu Yan
  • Patent number: 11142465
    Abstract: Provided are a composite precursor of a cathode active material, the composite precursor including a cobalt hydroxide and a cobalt oxyhydroxide, where an X-ray diffraction spectrum of the composite precursor has a first peak observed at a diffraction angle (2?) of 19.5°±0.5° and a second peak observed at a diffraction angle (2?) of 38.5°±0.5°; a cathode active material prepared from the composite precursor; a cathode and a lithium battery including the composite precursor; and a method of preparing the composite precursor.
    Type: Grant
    Filed: February 9, 2015
    Date of Patent: October 12, 2021
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Jin-Hwa Kim, Do-Hyung Park, Seon-Young Kwon, Min-Han Kim, Jun-Seok Park, Ji-Hyun Kim, Kyoung-Hyun Kim
  • Patent number: 11145858
    Abstract: The present disclosure provides a cathode active material and a lithium ion electrochemical system including the same. A general formula of the cathode active material is as follows: z{xLi2MnO3*(1?x)LiRO2}*(1?z) LiaR?1-aOy, herein R and R? independently include one or more metal ions, an oxidation valence state of the R is 3+, and an oxidation valence state of the R? is 2+, herein, 0?x?0.25, 0<a?0.75, 0.625?y?1, 0.75?z<1.
    Type: Grant
    Filed: January 19, 2020
    Date of Patent: October 12, 2021
    Assignee: Microvast Power Systems Co., Ltd.
    Inventors: Bryan T. Yonemoto, Karima Lasri, Xiao Zhang
  • Patent number: 11139476
    Abstract: According to one embodiment, there is provided an active material represented by a general formula Lix(NiaCobMncMd)1?s(Nb1?tTat)sO2. Here, M is at least one selected from the group consisting of Li, Ca, Mg, Al, Ti, V, Cr, Zr, Mo, Hf, and W, and 1.0?x?1.3, 0?a?0.9, 0?b?1.0, 0?c?0.8, 0?d?0.5, a+b+c+d=1, 0.005?s?0.3, and 0.0005?t?0.1 are satisfied.
    Type: Grant
    Filed: September 3, 2019
    Date of Patent: October 5, 2021
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Tetsuya Sasakawa, Yasuhiro Harada, Norio Takami
  • Patent number: 11121357
    Abstract: The present invention relates to a positive electrode active material for a secondary battery, which includes a core including a lithium composite metal oxide, and a surface treatment layer which is disposed on the core and includes an amorphous oxide containing a lithium (Li) oxide, a boron (B) oxide, and an aluminum (Al) oxide, wherein an amount of a lithium by-product present on a surface of the positive electrode active material is less than 0.55 wt % based on a total weight of the positive electrode active material, and a method of preparing the same.
    Type: Grant
    Filed: February 2, 2018
    Date of Patent: September 14, 2021
    Inventors: So Ra Baek, Ji Hye Kim, Tae Gu Yoo, Wang Mo Jung, Byung Chun Park
  • Patent number: 11094927
    Abstract: Provided is a positive electrode active material which suppresses a reduction in capacity due to charge and discharge cycles when used in a lithium ion secondary battery. A covering layer is formed by segregation on a superficial portion of the positive electrode active material. The positive electrode active material includes a first region and a second region. The first region exists in an inner portion of the positive electrode active material. The second region exists in a superficial portion of the positive electrode active material and part of the inner portion thereof. The first region includes lithium, a transition metal, and oxygen. The second region includes magnesium, fluorine, and oxygen.
    Type: Grant
    Filed: October 6, 2017
    Date of Patent: August 17, 2021
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Takahiro Kawakami, Teruaki Ochiai, Yohei Momma, Ayae Tsuruta, Masahiro Takahashi, Mayumi Mikami
  • Patent number: 11043675
    Abstract: The present application provides a positive electrode material and a lithium-ion battery. The positive electrode material comprises a lithium composite oxide comprising lithium and at least one selected from a group of cobalt (Co), nickel (Ni), manganese (Mn), and a compound on the surface thereof comprising strontium (Sr) and at least one selected from a group of silicon (Si), titanium (Ti). By using above positive electrode material, the increased DC resistance during the circulation of the lithium-ion battery is greatly reduced.
    Type: Grant
    Filed: October 21, 2018
    Date of Patent: June 22, 2021
    Assignee: Ningde Amperex Technology Limited
    Inventor: Chunfeng Zheng
  • Patent number: 11018379
    Abstract: Provided are an electrode capable of preventing separation of a short-circuit prevention layer since the short-circuit prevention layer, which is made of a heat-resistant polymer fiber, can be attached with high binding force when formed on the surface of the electrode, in the case that an active material layer includes a predetermined amount of polyvinylidene fluoride (PVdF) as a binder; a secondary battery using the same; and a method of manufacturing the electrode. The electrode includes: an electrode current collector; an active material layer formed on the electrode current collector; and a short-circuit prevention layer formed on the active material layer, wherein the short-circuit prevention layer includes a porous polymer fiber web having a plurality of pores through accumulation of ultrafine fibers of a heat-resistant polymer material, and the active material layer includes PVdF as a binder.
    Type: Grant
    Filed: September 19, 2017
    Date of Patent: May 25, 2021
    Assignee: AMOGREENTECH CO., LTD.
    Inventors: Seung Yun Rho, In Yong Seo, Ju Hyung Kim, Su Yeon Lee, Seung Gon Park, Dong Woo Kim
  • Patent number: 11018332
    Abstract: A lithium secondary battery includes: a positive electrode; a negative electrode including a negative electrode collector having a surface, on which a lithium metal is deposited during charge; 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 collector includes projection portions projecting from the surface toward the separator. There is no projection portion on an imaginary line extending from a first end to a second end opposite to the first end of the surface of the negative electrode collector and traversing a space between the projection portions.
    Type: Grant
    Filed: April 26, 2018
    Date of Patent: May 25, 2021
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Tooru Matsui, Junichi Sakamoto, Kazuko Asano, Akira Kano, Kensuke Nakura
  • Patent number: 10903490
    Abstract: Disclosed is a lithium complex oxide and method of manufacturing the same, more particularly, a lithium complex oxide effective in improving the characteristics of capacity, resistance, and lifetime with reduced residual lithium and with different interplanar distances of crystalline structure between a primary particle locating in an internal part of secondary particle and a primary particle locating on the surface part of the secondary particle, and a method of preparing the same.
    Type: Grant
    Filed: March 15, 2017
    Date of Patent: January 26, 2021
    Assignee: ECOPRO BM CO., LTD.
    Inventors: Moon Ho Choi, Jong Seung Shin, Dong Hee Kim, Suk Yong Jeon, Hyun Jong Yu, Kyoung Jun Lee, Young Nam Park
  • Patent number: 10868309
    Abstract: Provided is a positive electrode active material particle including a core containing lithium cobalt oxide represented by the following Chemical Formula 1; and a coating layer containing boron (B) and fluorine (F), which is coated on the surface of the core: Li1+xCo1?xO2??(1)
    Type: Grant
    Filed: March 30, 2017
    Date of Patent: December 15, 2020
    Inventors: Bo Ram Lee, Sung Bin Park, Young Uk Park, Chi Ho Jo, Hyuck Hur, Wang Mo Jung
  • Patent number: 10840509
    Abstract: A positive electrode active material for lithium secondary batteries disclosed herein comprises a lithium transition metal oxide of a layered structure, represented by formula Li1+?NixCoyMnzCa?M?O2 (where ?0.05???0.2, x+y+z+?+??1, 0.3?x??0.7, 0.1?y?0.4, 0.1?z?0.4, 0.0002???0.0025, 0.0002??+??0.02, and in a case where ?>0, M is absent or represents one, two or more elements selected from the group consisting of Na, Mg, Al, Ti, V, Cr, Zr, Nb, Mo, Hf, Ta and W). The tap density of the positive electrode active material ranges from 1.8 to 2.5 g/cm3.
    Type: Grant
    Filed: January 22, 2014
    Date of Patent: November 17, 2020
    Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, SUMITOMO METAL MINING CO., LTD.
    Inventors: Hideyuki Saka, Shuhei Oda, Tetsutaro Hayashi, Hiroyuki Toya
  • Patent number: 10818929
    Abstract: Disclosed herein is an electrode for a secondary battery including an electrode mixture layer including an electrode active material on one surface or both surfaces of a current collector, wherein the electrode mixture layer includes a plurality of fine holes recessed toward the current collector from a vertical cross-sectional surface, and each of the fine holes is a horn-shaped hole whose diameter is gradually decreased from the vertical cross-sectional surface toward the current collector in the electrode mixture layer.
    Type: Grant
    Filed: August 21, 2017
    Date of Patent: October 27, 2020
    Assignee: LG Chem, Ltd.
    Inventors: Sol Nip Lee, Hyeok Moo Lee, Song Taek Oh
  • Patent number: 10797284
    Abstract: A battery component includes a polymer frame having at least one window, the polymer frame having a first planar side and an opposite second planar side, and a window edge between the first and second planar sides. The battery component also has a battery cell component having a separator and bipolar current collector, the battery cell component being attached to the frame, the separator or bipolar current collector being attached to the first planar side or the window edge. A battery stack, a method for handling the battery component as an individual unit are also provided, electric vehicle battery and electric vehicle are also provided.
    Type: Grant
    Filed: February 14, 2017
    Date of Patent: October 6, 2020
    Assignees: VOLKSWAGEN AG, AUDI AG, DR. ING. H.C. F. PORSCHE AG
    Inventors: Mirko Herrmann, Angela Speidel
  • Patent number: 10763514
    Abstract: The invention relates to an electrically conductive base material (112) for receiving a coating material (114) which comprises electrically conductive particles (116), a method for the production thereof and the use thereof as current collector for an electrode material comprising electrically conductive particles. The base material (112) comprises a metal foil, wherein at least one surface (118) of the base material (112) provided for receiving the electrically conductive particles (116) has a first structure (120) and a second structure (122), wherein the first structure (120) has first ridges (124) and/or first grooves (126) relative to the surface (118) of the base material (112) and wherein the second structure (122) has second ridges (128) and/or second grooves (130) relative to the surface (132) of the first structure (120).
    Type: Grant
    Filed: September 28, 2016
    Date of Patent: September 1, 2020
    Assignee: KARLSRUHER INSTITUT FUER TECHNOLOGIE
    Inventors: Wilhelm Pfleging, Johannes Proell, Yijing Zheng
  • Patent number: 10749165
    Abstract: A positive electrode active material for a non-aqueous electrolyte secondary battery includes secondary particles of a lithium transition metal complex oxide as a main component. The main component is represented by a formula: Lit(Ni1-xCox)1-yMnyB?P?S?O2, where t, x, y, ?, ?, and ? satisfy inequalities of 0?x?1, 0.00?y?0.50, (1?x)·(1?y)?y, 0.000???0.020, 0.000???0.030, 0.000???0.030, and 1+3?+3?+2??t?1.30, and satisfy at least one of inequalities of 0.002??, 0.006??, and 0.004??. The secondary particles exhibit a pore distribution, where a pore volume Vp(1) having a pore diameter of not less than 0.01 ?m and not more than 0.15 ?m satisfies an inequality of 0.035 cm3/g?Vp(1) and where a pore volume Vp(2) having a pore diameter of not less than 0.01 ?m and not more than 10 ?m satisfies an inequality of Vp(2)?0.450 cm3/g.
    Type: Grant
    Filed: August 24, 2016
    Date of Patent: August 18, 2020
    Assignee: NICHIA CORPORATION
    Inventor: Kengo Oishi
  • Patent number: 10714756
    Abstract: In certain aspects, electrolytic deposition and electroless displacement deposition methods are provided to form bimetallic structures that may be used as a bipolar current collector in a battery or a substrate for forming graphene sheets. In other aspects, bipolar current collectors for lithium-ion based electrochemical cells are provided. The bimetallic current collector may have an aluminum-containing surface and a continuous copper coating. In other aspects, a flexible substrate may be coated with one or more conductive materials, like nickel, copper, graphene, aluminum, alloys, and combinations thereof. The flexible substrate is folded to form a bipolar current collector. New stack assemblies for lithium-ion based batteries incorporating such bipolar current collectors are also provided that can have cells with a tab-free and/or weld-free design.
    Type: Grant
    Filed: November 11, 2016
    Date of Patent: July 14, 2020
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Fang Dai, Mahmoud H. Abd Elhamid, Anne M. Dailly, Mei Cai
  • Patent number: 10693196
    Abstract: Provided are a positive electrode active material for a secondary battery, in which, since the positive electrode active material includes a lithium-metal oxide having high-temperature stability and a metal oxide on a surface of a particle and a surface side in the particle, there is no concern about gas generation, because the occurrence of cracks on the surface of the active material is prevented during charge and discharge, and high-temperature storage stability and life characteristics may be improved when the positive electrode active material is used in the battery, and a secondary battery including the same.
    Type: Grant
    Filed: December 21, 2016
    Date of Patent: June 23, 2020
    Assignee: LG Chem, Ltd.
    Inventors: Ji Hye Kim, Young Uk Park, Wang Mo Jung, Sun Sik Shin, Sang Min Park
  • Patent number: 10686193
    Abstract: The present disclosure relates to a negative electrode for a lithium secondary battery comprising a mesh-type current collector and a lithium thin film, and in particular, to a negative electrode in which a lithium thin film is inserted to an opening of a current collector and empty space is formed, a lithium secondary battery comprising the same, and a manufacturing method thereof. The present disclosure is capable of enhancing safety of the lithium secondary battery by preventing lithium dendrite growth. In addition, the present disclosure is capable of preventing stripping of the negative electrode current collector and the lithium thin film while charging and discharging the battery since adhesion efficiency increases between the negative electrode and the current collector.
    Type: Grant
    Filed: July 24, 2017
    Date of Patent: June 16, 2020
    Assignee: LG CHEM, LTD.
    Inventors: Hyunjin Oh, Jin Hyun Cho, Hyunwoong Yun
  • Patent number: 10573880
    Abstract: Disclosed is a cathode active material in which lithium cobalt oxide particles and manganese (Mn) or titanium (Ti)-containing lithium transition metal oxide particles co-exist and a method of preparing the same.
    Type: Grant
    Filed: November 5, 2014
    Date of Patent: February 25, 2020
    Assignee: LG Chem, Ltd.
    Inventors: Sun Sik Shin, Hye Lim Jeon, Bo Ram Lee, Hong Kyu Park
  • Patent number: 10553864
    Abstract: An active material expressed by a general formula; LiaNibCocMndDeOf (where 0.2?“a”?1, “b”+“c”+“d”+“e”=1, 0?“e”<1, “D” is at least one element selected from the group consisting of Li, Fe, Cr, Cu, Zn, Ca, Mg, Zr, S, Si, Na, K and Al, and 1.7?“f”?2.1) includes a high manganese portion, which is made of a metallic oxide including Ni, Co and Mn at least and of which the composition ratio between Ni, Co and Mn is expressed by Ni:Co:Mn=b2:c2:d2 (note that “b2”+“c2”+“d2”=1, 0<“b2”<1, 0<“c2”<“c”, and “d”<“d2”<1), in a superficial layer thereof.
    Type: Grant
    Filed: January 16, 2018
    Date of Patent: February 4, 2020
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Tsukasa Sugie, Dai Matsushiro, Masanori Harata, Takefumi Fukumoto
  • Patent number: 10541408
    Abstract: Provided is a composite electrode for a lithium secondary battery for improving output and a lithium secondary battery including the composite electrode, in which, in a composite electrode having two or more active materials mixed therein, an active material having a small particle size is included in the composite electrode by being coagulated and secondarily granulated so as to allow mixed active material particles to have a uniform size, and thus, electrical conductivity is improved to have high output characteristics.
    Type: Grant
    Filed: January 10, 2013
    Date of Patent: January 21, 2020
    Assignee: LG Chem, Ltd.
    Inventors: Sun Jung Hwang, Sin Kyu Kim, Yong Tae Lee, Hyun Kuk Noh, Geun Chang Chung, Keun Wan An
  • Patent number: 10505190
    Abstract: Disclosed is a lithium-cobalt based complex oxide represented by Formula 1 below including lithium, cobalt and manganese wherein the lithium-cobalt based complex oxide maintains a crystal structure of a single O3 phase at a state of charge (SOC) of 50% or more based on a theoretical amount: LixCo1-y-zMnyAzO2??(1) wherein 0.95?x?1.15, 0?y?0.3 and 0?z?0.2; and A is at least one element selected the group consisting of Al, Mg, Ti, Zr, Sr, W, Nb, Mo, Ga, and Ni.
    Type: Grant
    Filed: August 19, 2014
    Date of Patent: December 10, 2019
    Assignee: LG Chem, Ltd.
    Inventors: Sun Sik Shin, Hye Lim Jeon, Myung Ki Lee, Geun Gi Min, Wang Mo Jung
  • Patent number: 10483559
    Abstract: A power generator 1 includes: a fuel electrode 5 that receives a supply of fuel gas; an air electrode 6 that receives a supply of air; an electrolyte layer 7 disposed in between the fuel electrode 5 and the air electrode 6; a gas flow channel 3 that circulates therein the fuel gas or the air, with the fuel electrode 5 or the air electrode 6 being exposed to at least part of the gas flow channel 3; a porous body 8 filled in the gas flow channel 3; and a porous sheet 9 present in contact with the porous body 8 and the fuel electrode 5 or the air electrode 6, the porous sheet 9 being made of a material having electrical conductivity, the material having pores formed to spread in a uniform manner, the pores being larger in diameter than pores formed in the porous body 8.
    Type: Grant
    Filed: March 7, 2014
    Date of Patent: November 19, 2019
    Assignee: KABUSHIKI KAISHA ATSUMITEC
    Inventors: Naoki Uchiyama, Yasuyuki Uchiyama, Seigou Nakabayashi
  • Patent number: 10483536
    Abstract: There is provided a production method of a lithium-containing composite oxide capable of improving performances of cycle characteristics, rate characteristics, and the like of a lithium ion secondary battery. A production method of a lithium-containing composite oxide is characterized in that when producing a lithium-containing composite oxide by mixing a transition metal hydroxide containing Ni and Mn essentially and a lithium source and heating the mixture, a transition metal hydroxide having a crystallite diameter of the (100) plane being 35 nm or less in a crystal structure model in the space group P-3m1 of an X-ray diffraction pattern is used.
    Type: Grant
    Filed: August 12, 2015
    Date of Patent: November 19, 2019
    Assignee: SUMITOMO CHEMICAL CO., LTD.
    Inventors: Masahiko Tamura, Takeshi Kawasato, Satoshi Asakura
  • Patent number: 10461366
    Abstract: An energy storage device includes a first electrode and a second electrode, a separator between the first electrode and the second electrode, and an electrolyte in contact with the first electrode, the second electrode, and the separator. The electrolyte includes at least one of a fluorine-containing cyclic carbonate, a fluorine-containing linear carbonate, and a fluoroether. At least one of the first electrode and the second electrode includes a self-supporting composite material film. The composite material film has greater than 0% and less than about 90% by weight of silicon particles, and greater than 0% and less than about 90% by weight of one or more types of carbon phases. At least one of the one or more types of carbon phases can be a substantially continuous phase that holds the composite material film together such that the silicon particles are distributed throughout the composite material film.
    Type: Grant
    Filed: July 15, 2015
    Date of Patent: October 29, 2019
    Assignee: ENEVATE CORPORATION
    Inventors: Heidi Leighette Anderson, Benjamin Yong Park, Hong Gan, Sung Won Choi
  • Patent number: 10431822
    Abstract: The present invention generally relates to P2-type layered materials for electrochemical devices such as Na-ion batteries with high rate performance, and methods of making or using such materials. In some embodiments, the P2-type layered material has the chemical formula NaX(MnQFeRCoT)O2. The P2-type layered material may be synthesized, for example, by a solid state reaction. In some cases, the P2-type layered material may be used as an electrode in an electrochemical device. The electrochemical device may have higher initial discharge capacities at various charge/discharge rates in galvanostatic testing compared with the initial discharge capacities of other P2-type layered materials.
    Type: Grant
    Filed: April 28, 2017
    Date of Patent: October 1, 2019
    Assignee: Massachusetts Institute of Technology
    Inventors: Gerbrand Ceder, Lei Liu
  • Patent number: 10403929
    Abstract: Disclosed are a cathode additive of a lithium secondary battery and a method of preparing the same. The lithium secondary may have high irreversible capacity and further improved capacity characteristics.
    Type: Grant
    Filed: November 27, 2018
    Date of Patent: September 3, 2019
    Assignee: LG Chem, Ltd.
    Inventors: Hyelim Jeon, Donghun Lee, Eunsol Lho, Sang wook Lee, Wang Mo Jung
  • Patent number: 10396315
    Abstract: A flexible, jelly-roll type battery cell with a hollow core is disclosed. The battery cell includes a pair of electrodes wound together around a hollow core, a plurality of electrode tabs, each coupled to a separate one of the electrodes, and a flexible outer wrapper enclosing the pair of electrodes.
    Type: Grant
    Filed: December 30, 2016
    Date of Patent: August 27, 2019
    Assignee: Microsoft Technology Licensing, LLC
    Inventors: Dongli Zeng, Tzu-Yuan Lin, Vijayasekaran Boovaragavan, John Christopher Collins, Michael Nikkhoo
  • Patent number: 10340513
    Abstract: A positive active material for a lithium-ion secondary battery includes a lithium composite oxide particle containing nickel atoms, manganese atoms, and fluorine atoms. The lithium composite oxide particle includes a particle center portion and a surface layer portion that is closer to a surface of the lithium composite oxide particle than the particle center portion is. A fluorine atom concentration Fc (at %) of the particle center portion measured by energy dispersive X-ray spectroscopy is lower than a fluorine atom concentration Fs (at %) of the surface layer portion.
    Type: Grant
    Filed: July 22, 2015
    Date of Patent: July 2, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Ryuta Sugiura
  • Patent number: 10326127
    Abstract: To provide a cathode active material for a lithium ion secondary battery excellent in the cycle characteristics and rate characteristics even when charging is conducted at a high voltage. A cathode active material for a lithium ion secondary battery, which comprises particles (III) having a covering layer comprising a metal oxide (I) containing at least one metal element selected from the group consisting of elements in Groups 3 and 13 of the periodic table and lanthanoid elements, and a compound (II) containing Li and P, on the surface of a lithium-containing composite oxide comprising lithium and a transition metal element, wherein the atomic ratio of said P to said metal element (P/metal element) contained within 5 nm of the surface layer of the particles (III) is from 0.03 to 0.45.
    Type: Grant
    Filed: March 31, 2014
    Date of Patent: June 18, 2019
    Assignee: SUMITOMO CHEMICAL CO., LTD.
    Inventors: Takeshi Kawasato, Kentaro Tsunozaki, Haisheng Zeng, Yasuyuki Takimoto, Toshio Suzuki, Tegi Ri
  • Patent number: 10297824
    Abstract: Provided is a positive electrode active material which is useful for a lithium secondary battery having a battery resistance lower than that of the conventional positive electrode active material below freezing point. The positive electrode active material for a lithium secondary battery contains at least one element selected from a group consisting of nickel, cobalt and manganese, the positive electrode active material having a layered structure and satisfying all of the following requirements (1) to (3): (1) a primary particle size is 0.1 ?m to 1 ?m and a secondary particle size is 1 ?m to 10 ?m; (2) in an X-ray powder diffraction measurement using CuK? radiation, a crystallite size in the peak within 2?=18.7±1° is 100 ? to 1200 ? and a crystallite size in the peak within 2?=44.6±1° is 100 ? to 700 ?; and (3) in a pore distribution obtained by a mercury intrusion method, a pore peak exists in a range where the pore size is 10 nm to 200 nm and a pore volume in the said range is 0.01 cm3/g to 0.05 cm3/g.
    Type: Grant
    Filed: July 1, 2014
    Date of Patent: May 21, 2019
    Assignees: Tanaka Chemical Corporation, Sumitomo Chemical Company, Limited
    Inventors: Yasutaka Iida, Daisuke Yamashita, Takaaki Masukawa, Hiroyuki Ito, Hiroyuki Kurita, Kenji Takamori, Yuichiro Imanari
  • Patent number: 10297821
    Abstract: Methods are presented for synthesizing a metal precursor for a cathode-active material. The methods include adding urea to a solution comprising dissolved ions of at least one transition metal selected from Mn, Co, and Ni. The methods also include increasing a pH of the aqueous solution to a threshold pH. The methods additionally include heating the aqueous solution to precipitate a compound that includes the at least one transition metal. Such heating may involve urea decomposition. Methods are also presented that include filtering the compound from the solution and contacting the compound with at least a lithium precursor to produce a reactant charge. In these methods, the reactant charge is calcined to produce the cathode-active material. Other methods are presented.
    Type: Grant
    Filed: September 23, 2016
    Date of Patent: May 21, 2019
    Assignee: Apple Inc.
    Inventors: Hongli Dai, Christopher Johnson
  • Patent number: 10283757
    Abstract: The present disclosure relates to a positive electrode active material precursor for a lithium secondary battery, a positive electrode active material manufactured by using thereof, and a lithium secondary battery comprising the same. More specifically, it relates to a positive electrode active material precursor for a lithium secondary battery as a secondary particle comprising transition metals, and formed by gathering of a plurality of primary particles having different a-axis direction length to c-axis direction length ratio, wherein the a-axis direction length to c-axis direction length ratio of the primary particle making up the secondary particle is increased from the center to the surface of the secondary particle; a positive electrode active material; and a lithium secondary battery comprising the same.
    Type: Grant
    Filed: April 6, 2016
    Date of Patent: May 7, 2019
    Assignees: IUCF-HYU (INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY), ENERCERAMIC INC.
    Inventors: Hyung-Joo Noh, Yang-Kook Sun, Jang-Wook Park
  • Patent number: 10276854
    Abstract: A rechargeable battery includes an electrode assembly, a case accommodating the electrode assembly, a cap plate coupled to the case, an electrode terminal within a terminal hole of the cap plate, and a lead tab connecting the electrode assembly to the electrode terminal, wherein the electrode terminal includes a plate terminal located outside of the cap plate and having a through-hole corresponding to the terminal hole, a sub-terminal extending into the through-hole and coupled to the plate terminal, and a rivet terminal penetrating the terminal hole, the rivet terminal being connected to the lead tab and being compression-molded to the sub-terminal.
    Type: Grant
    Filed: October 1, 2015
    Date of Patent: April 30, 2019
    Assignee: Samsung SDI Co., Ltd.
    Inventor: Min-Seok Koo
  • Patent number: 10263294
    Abstract: Provided is a lithium ion secondary battery which has a low internal resistance in a low-SOC region and a sufficiently large amount of gas generated during overcharge. The lithium ion secondary battery disclosed herein includes an electrode body having a positive electrode and a negative electrode, and a nonaqueous electrolytic solution. The lithium ion secondary battery further includes a pressure-type safety mechanism. The nonaqueous electrolytic solution includes a gas generating agent. The positive electrode has a positive electrode active material layer including a positive electrode active material. The positive electrode active material includes a lithium transition metal composite oxide represented by LiNiaCobMncO2 wherein a, b and c satisfy the following conditions: 0.35?a?0.45, 0.15?b?0.25, 0.35?c?0.45, and a+b+c=1, and a lithium transition metal composite oxide represented by LiNixCoyMnzO2 wherein x, y and z satisfy the following conditions: 0.35?x?0.45, 0.45?y?0.55, 0.05?z?0.
    Type: Grant
    Filed: June 14, 2017
    Date of Patent: April 16, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hideyuki Saka, Yukihiro Okada, Keiichi Takahashi, Kaoru Inoue
  • Patent number: 10256461
    Abstract: A nonaqueous electrolyte secondary battery of the invention includes a positive electrode, a negative electrode and a nonaqueous electrolyte, the positive electrode including lithium transition metal oxide particles as a positive electrode active material, the lithium transition metal oxide particles containing nickel as a main transition metal component and being such that a first compound containing at least one element Ma selected from the group consisting of Group IV elements and Group V elements is sintered to a portion of the surface of the lithium transition metal oxide particles, the first compound having a composition different from that of the lithium transition metal oxide particles, the positive electrode further including a second compound containing at least one element Mb selected from the group consisting of Group VI elements, the second compound having a composition different from that of the lithium transition metal oxide particles.
    Type: Grant
    Filed: August 29, 2013
    Date of Patent: April 9, 2019
    Assignee: SANYO Electric Co., Ltd.
    Inventors: Atsushi Mizawa, Fumiharu Niina, Daisuke Nishide, Hiroyuki Fujimoto, Yoshinori Kida