Alkalated Cobalt (co) Chalcogenide Patents (Class 429/231.3)
  • 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: 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: 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: 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
  • Patent number: 10224543
    Abstract: Disclosed are a positive active material for a rechargeable lithium battery including a compound represented LixCo1?yTiyO2, wherein 1<x?1.1 and 0.02?y?0.05; a method of preparing the same; and a rechargeable lithium battery including the same.
    Type: Grant
    Filed: January 9, 2015
    Date of Patent: March 5, 2019
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Young-Ki Kim, Na-Ri Park, Young-Hun Lee, Soon-Rewl Lee, Ick-Kyu Choi, Yong-Chul Park
  • Patent number: 10204997
    Abstract: The present application discloses a thin film transistor, a display substrate and display panel having the same, and a fabricating method thereof. The thin film transistor includes a base substrate; an active layer on the base substrate having a channel region, a first electrode contact region, and a second electrode contact region; and a first electrode on a side of the first electrode contact region distal to the base substrate; and a second electrode on a side of the second electrode contact region distal to the base substrate; the first electrode and the second electrode being made of an amorphous carbon material.
    Type: Grant
    Filed: September 21, 2016
    Date of Patent: February 12, 2019
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Ke Wang, Ce Ning
  • Patent number: 10193150
    Abstract: Provided are a cathode material for lithium ion secondary battery having excellent rate characteristics and cycle characteristics while a cathode active substance has high density, and a lithium ion secondary battery cathode and a lithium ion secondary battery that use the above cathode material. The cathode material for lithium ion secondary battery (1), represented by Li1+xM11?x?yM2yO2 [where ?0.1?x?0.3, 0?y?0.1; M1 is Ni, Co, Mn; and M2 is Mg, Al, Ti, Zr, Mo, Nb, Fe, B], is an agglomerate including secondary particles (50, 60) both formed via aggregation of lithium metal composite oxide primary particles (10) having a layered structure. A mean porosity of the secondary particles having a particle size of more than 10 ?m and equal to 50 ?m or less is higher than that of the secondary particles having a particle size of 0.5 ?m to 10 ?m.
    Type: Grant
    Filed: July 3, 2015
    Date of Patent: January 29, 2019
    Assignee: HITACHI METALS, LTD.
    Inventors: Xiaoliang Feng, Shuichi Takano, Takashi Nakabayashi, Akira Gunji
  • Patent number: 10177373
    Abstract: A positive electrode active material for a non-aqueous electrolyte secondary battery, including primary particles of a lithium nickel composite oxide represented by the formula: LibNi1-x-yCoxMyO2 wherein M represents at least one element selected from Mg, Al, Ca, Ti, V, Cr, Mn, Nb, Zr and Mo; b represents a number satisfying 0.95?b?1.03; and x represents a number satisfying 0<x?0.15 and y represents a number satisfying 0<y?0.07, wherein the sum total of x and y is 0.16 or smaller, i.e., x+y?0.16) and secondary particles that are aggregates of the primary particles, wherein microparticles containing W and Li are present on the surface of each of the primary particles, and the length of axis-c of the lithium nickel composite oxide is 14.183 angstroms or more as determined by a Rietveld analysis of X-ray diffraction data on the oxide.
    Type: Grant
    Filed: April 20, 2015
    Date of Patent: January 8, 2019
    Assignee: SUMITOMO METAL MINING CO., LTD.
    Inventors: Jun Yokoyama, Yuki Furuichi, Tomoko Nakayama, Tetsufumi Komukai, Kensaku Mori, Mitsuru Yamauchi
  • Patent number: 10164249
    Abstract: The present invention provides a positive active material for use in a secondary lithium battery, a method for preparing the positive active material and a secondary lithium battery containing the positive active material. The positive active material includes a core of lithium transition metal oxide represented by Formula LixMyN1-yO2-?A? and a coating layer of lithium transition metal silicate represented by Formula x?Li2O.y?N?Oa.SiO2-?B?which in-situ formed on the core, wherein 0.8?x?1.3, 0.6?y?1.0, 0.01?x??2.1, 0.2?y??1.5, 0.1?a?3.0, 0???0.2, 0???0.4, 0???0.5, 0???0.5. The positive active material according to the present invention has high capacity, desirable cycling performance and safety performance, as well as desirable thermal stability.
    Type: Grant
    Filed: August 20, 2015
    Date of Patent: December 25, 2018
    Assignee: Contemporary Amperex Technology Co., Limited
    Inventors: Xiangpeng Fang, Chengren Wu, Na Liu, Xuguang Gao
  • Patent number: 10147943
    Abstract: A positive electrode active material for a nonaqueous electrolyte secondary battery contains, as a main component, a lithium composite oxide in which a ratio of Ni relative to a total number of moles of metal elements other than Li is greater than 30 mol %. The lithium composite oxide is a secondary particle being aggregation of primary particles having an average particle diameter of 3 ?m or more and 20 ?m or less, and having a compression rupture strength of 100 MPa or more and less than 200 MPa. The lithium composite oxide contains at least one element selected from Ba, Ca, and Sr.
    Type: Grant
    Filed: December 8, 2015
    Date of Patent: December 4, 2018
    Assignee: Panasonic Corporation
    Inventors: Akihiro Maeda, Hidekazu Hiratsuka
  • Patent number: 10141564
    Abstract: A method is provided in which a lithium titanate precursor structure is subjected to element selective sputtering to form a lithium titanate structure including a lithium titanate core and a conformal layer on the lithium titanate core, wherein the conformal layer includes titanium oxide. A method of preparing an electrode for a lithium ion battery, wherein the electrode includes lithium titanate structures, is also provided.
    Type: Grant
    Filed: March 31, 2016
    Date of Patent: November 27, 2018
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventor: Zhongyi Liu
  • Patent number: 10109854
    Abstract: A positive electrode active material for use in nonaqueous electrolyte secondary batteries. The active material is composed of particles each formed by the gathering of grains that comprises at least one metal element selected from the group consisting of Ta and Nb. One of the particles has a compression fracture strength of 500 MPa or more. The grain diameter in the (110) vector direction of the particles is 100 nm to 300 nm.
    Type: Grant
    Filed: July 15, 2016
    Date of Patent: October 23, 2018
    Assignee: PANASONIC CORPORATION
    Inventor: Hidekazu Hiratsuka
  • Patent number: 10079387
    Abstract: A Poly(1-pyrenemethyl methacrylate-co-dopamine methacrylamide) PPyDMA polymer binder has been designed and fabricated, and has demonstrated an excellent performance for silicon (Si), graphite and a metal alloy anode materials. The PPyDMA polymer binder demonstrates the great potential of a catechol moiety for use in a lithium-ion battery.
    Type: Grant
    Filed: February 26, 2015
    Date of Patent: September 18, 2018
    Assignee: The Regents of the University of California
    Inventors: Gao Liu, Hui Zhao
  • Patent number: 10074851
    Abstract: Surface modified lithium-containing composite oxide particles include base material particles of lithium-containing composite oxide, zirconium hydroxide or zirconium oxide, and at least one lithium salt selected from the group consisting of Li2ZrF6, Li2TiF6, Li3PO4, Li2SO4 and Li2SO4.H2O. The zirconium hydroxide or zirconium oxide, and the at least one lithium salt are attached to a surface of the base material particle. The lithium-containing composite oxide is represented by the formula: LipNxMyOzFa. N is at least one element selected from the group consisting of Co, Mn and Ni; M is at least one element selected from the group consisting of Al, elements of group 2, and transition metal elements other than N; 0.9<p<1.1; 0.85<x<1.0; 0<y<0.15; 1.9<z<2.1; x+y=1; and 0<a<0.05.
    Type: Grant
    Filed: May 28, 2015
    Date of Patent: September 11, 2018
    Assignee: SUMITOMO CHEMICAL CO., LTD.
    Inventors: Tomoo Kato, Remi Hiraki
  • Patent number: 10050272
    Abstract: A negative electrode active material for a non-aqueous electrolyte secondary battery, wherein the negative electrode active material is represented by an elemental composition formula of Met1-Si—O—C—H (wherein Met1 represents one alkali metal element or a mixture of alkali metal elements), including: a silicate salt made of a silicon-based inorganic compound and the alkali metal, and fine particles composed of silicon, silicon alloy, or silicon oxide being dispersed in the silicate salt; and a negative electrode active material for a non-aqueous electrolyte secondary battery, wherein the negative electrode active material is represented by an elemental composition formula of Met2-Si—O—C—H (wherein Met2 represents one alkaline earth metal element or a mixture of alkaline earth metal elements), including: a silicate salt made of a silicon-based inorganic compound and the alkaline earth metal.
    Type: Grant
    Filed: December 2, 2014
    Date of Patent: August 14, 2018
    Assignee: SHIN-ETSU CHEMICAL CO., LTD.
    Inventors: Tetsuo Nakanishi, Kazuyuki Taniguchi, Yoshitaka Aoki, Yoshiyasu Yamada
  • Patent number: 10038186
    Abstract: The present invention provides a non-aqueous electrolyte secondary battery including a positive electrode, a negative electrode having a negative active material, and a non-aqueous electrolyte, characterized in that the negative active material contains composite particle (C), which has silicon-containing particle (A) and electronic conductive additive (B), the silicon-containing particle (A) has a content of carbon, and when measured at a temperature rising rate of 10±2° C./min by thermogravimetry, said composite particle (C) exhibits two stages of weight loss in the range of 30 to 1000° C.
    Type: Grant
    Filed: October 8, 2015
    Date of Patent: July 31, 2018
    Assignee: GS Yuasa International Ltd.
    Inventors: Toru Tabuchi, Toshiyuki Aoki, Minoru Teshima, Katsushi Nishie
  • Patent number: 10038190
    Abstract: A transition metal composite hydroxide can be used as a precursor to allow a lithium transition metal composite oxide having a small and highly uniform particle diameter to be obtained. A method also is provided for producing a transition metal composite hydroxide represented by a general formula (1) MxWsAt(OH)2+?, coated with a compound containing the additive element, and serving as a precursor of a positive electrode active material for nonaqueous electrolyte secondary batteries. The method includes producing a composite hydroxide particle, forming nuclei, growing a formed nucleus; and forming a coating material containing a metal oxide or hydroxide on the surfaces of composite hydroxide particles obtained through the upstream step.
    Type: Grant
    Filed: May 2, 2016
    Date of Patent: July 31, 2018
    Assignee: SUMITOMO METAL MINING CO., LTD.
    Inventors: Hiroyuki Toya, Atsushi Fukui
  • Patent number: 10026988
    Abstract: Provided is a lithium ion secondary battery including a power generation element, the power generation element including a positive electrode, a negative electrode, a separator, and an electrolyte solution, the positive electrode including a positive electrode current collector, and a positive electrode active material layer provided for the positive electrode current collector, the positive electrode active material layer including a positive electrode active material and binder, the negative electrode including a negative electrode current collector and a negative electrode active material layer provided for the negative electrode current collector, the negative electrode active material layer including a negative electrode active material and binder. The positive electrode has a volume resistivity in a range of 100 ?cm or more and 700 ?cm or less after at least one charging and discharging cycle.
    Type: Grant
    Filed: March 29, 2016
    Date of Patent: July 17, 2018
    Assignee: AUTOMOTIVE ENERGY SUPPLY CORPORATION
    Inventors: Sohei Suga, Koichi Shinohara, Kenji Ohara, Toshihiro Horiuchi, Masanori Aoyagi, Junko Nishiyama
  • Patent number: 10026989
    Abstract: An Object of the invention is to obtain an all solid lithium battery having an excellent output performance. To achieve the object, a sulfide based solid electrolyte is used as an electrolyte; an oxide containing lithium, a metal element that acts as a redox couple, and a metal element that forms an electron-insulating oxide is used as a cathode active material; and the concentration of the metal element that forms the electron-insulating oxide on the surface of the cathode active material (oxide) that is in contact with the sulfide solid electrolyte is made high.
    Type: Grant
    Filed: March 23, 2011
    Date of Patent: July 17, 2018
    Assignees: NATIONAL INSTITUTE FOR MATERIALS SCIENCE, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kazunori Takada, Xiaoxiong Xu, Tsuyoshi Ohnishi, Isao Sakaguchi, Ken Watanabe, Yasushi Tsuchida, Yukiyoshi Ueno, Koji Kawamoto
  • Patent number: 10008746
    Abstract: An electrolytic solution for a secondary battery is provided. The electrolyte solution includes an electrolyte salt; and a solvent including a first solvent and a second solvent; wherein the first solvent includes 4-fluoro-1,3-dioxolane-2-one; and wherein the second solvent includes at least one of Chemical Formula No. 23, Chemical Formula No. 24, or Chemical Formula No. 25.
    Type: Grant
    Filed: March 21, 2016
    Date of Patent: June 26, 2018
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Masayuki Ihara, Kiyohiko Suzuki, Akinori Kita, Tadahiko Kubota
  • Patent number: 9997772
    Abstract: Providing a negative-electrode material for nonaqueous-electrolyte secondary battery, the negative-electrode material including lithium silicate particles coated by a carbonaceous substance, a production process for the same, a negative electrode for nonaqueous-electrolyte secondary battery, and a nonaqueous-electrolyte secondary battery. A negative-electrode material for nonaqueous-electrolyte secondary battery includes lithium silicate particles having a surface at least some of which is coated by a carbonaceous substance formed by heating a carbon-containing compound at a thermal decomposition temperature of the carbon-containing compound or more and 1,100±° C. or less, the carbon-containing compound being a solid at ordinary temperature and exhibiting a zeta-potential absolute value being 60 or more against N-methyl-2-pyrrolidone (or NMP).
    Type: Grant
    Filed: August 23, 2013
    Date of Patent: June 12, 2018
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Tomohiro Niimi, Yusuke Sugiyama, Nagisa Watanabe, Kazuhito Kawasumi, Masakazu Murase, Masataka Nakanishi
  • Patent number: 9947924
    Abstract: A positive electrode active material for nonaqueous electrolyte secondary batteries, which has high energy density and excellent cycle characteristics. A positive electrode active material for nonaqueous electrolyte secondary batteries of the present invention is represented by general formula LiNixCoyM(1-x-y)O2(wherein M represents at least one element selected from among metal elements, 0.3?x<1.0 and 0<y?0.5) and is configured of particles, each of which is an aggregate of crystallites. Each particle has a compressive breaking strength of from 200 MPa to 500 MPa (inclusive), and the crystallite diameter in the vector direction of the particle is from 100 nm to 300 nm (inclusive).
    Type: Grant
    Filed: November 27, 2013
    Date of Patent: April 17, 2018
    Assignee: SANYO Electric Co., Ltd.
    Inventors: Hidekazu Hiratsuka, Kaoru Nagata, Tsutomu Nishioka, Tatsuhiko Suzuki
  • Patent number: 9929445
    Abstract: Some lithium-ion batteries are assembled using a plurality of electrically interconnected battery pouches to obtain the electrical potential and power requirements of the battery application. In this disclosure, such battery pouches are prepared to contain a stacked grouping of inter-layered and interconnected anodes, cathodes, and separators, each wetted with a liquid electrolyte. A pair of reference electrodes is combined in a specific arrangement with other cell members to enable accurate assessment of both anode group and cathode group performance, and to validate and regenerate reference electrode capability.
    Type: Grant
    Filed: December 13, 2013
    Date of Patent: March 27, 2018
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Zhiqiang Yu, Haijing Liu, Xiaochao Que, Qiang Wu