Plural Layers Patents (Class 429/144)
  • Patent number: 11031656
    Abstract: The present disclosure relates to an invention directed to a composite separator having a porous coating layer, where the porous coating layer is prepared from a slurry by adjusting a particle diameter of an inorganic matter that is an ingredient of the slurry, so that a sinking rate of the inorganic particles may remarkably slow down and dispersibility may be dramatically improved, and as a result, the content of the inorganic particles may relatively increase and the inorganic particles may be uniformly distributed in the coating layer on a substrate, thereby preventing a reduction in battery performance.
    Type: Grant
    Filed: May 2, 2018
    Date of Patent: June 8, 2021
    Inventors: Joo-Sung Lee, Su-Jin Yoon, Da-Kyung Han, Bo-Kyung Ryu, Jong-Hun Kim
  • Patent number: 10994511
    Abstract: There is provided a functional layer including a layered double hydroxide (LDH). The functional layer includes a first layer with a thickness of 0.10 ?m or more, the first layer being composed of fine LDH particles having a diameter of less than 0.05 ?m, and a second layer composed of large LDH particles having a mean particle diameter of 0.05 ?m or more, the second layer being an outermost layer provided on the first layer.
    Type: Grant
    Filed: December 20, 2018
    Date of Patent: May 4, 2021
    Assignee: NGK Insulators, Ltd.
    Inventors: Sho Yamamoto, Shohei Yokoyama
  • Patent number: 10991927
    Abstract: The present application provides a separator and an energy storage device. The separator comprises: a first porous substrate; and a second porous substrate arranged on at least one surface of the first porous substrate; wherein the elongation at break of the second porous substrate is greater than the elongation at break of the first porous substrate in at least one of the machine and transverse directions of the separator. The separator has a high tensile strength and an elongation at break and good heat resistance, and may improve the safety performance of the energy storage device when the separator is applied to the energy storage device.
    Type: Grant
    Filed: October 29, 2018
    Date of Patent: April 27, 2021
    Assignee: Ningde Amperex Technology Limited
    Inventors: Wei Cui, Xinghua Tao, Cong Cheng
  • Patent number: 10985405
    Abstract: A battery includes a first portion and a second portion, in which the first portion includes a first positive electrode layer, a first negative electrode layer, and a first solid electrolyte layer located between the first positive electrode layer and the first negative electrode layer, in which the second portion includes a second positive electrode layer, a second negative electrode layer, and a second solid electrolyte layer located between the second positive electrode layer and the second negative electrode layer, in which the first portion and the second portion are in contact with each other, the second portion is more sharply bent than the first portion, the first solid electrolyte layer contains a first binder, the second solid electrolyte layer contains a second binder, and the second solid electrolyte layer containing the second binder has higher flexibility than a flexibility of the first solid electrolyte layer containing the first binder.
    Type: Grant
    Filed: June 1, 2020
    Date of Patent: April 20, 2021
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Tomoyuki Komori, Izuru Sasaki
  • Patent number: 10978766
    Abstract: The present disclosure relates to a separator for an electrochemical device. The separator includes a porous coating layer containing inorganic particles on the surface of a porous polymer substrate, wherein the porous coating layer includes plate-like inorganic particles and spherical inorganic particles as inorganic particles, and shows a step-wise or successive increase in content of inorganic particles a) from the bottom close to the porous polymer substrate to the top, when viewed from the thickness direction of the porous coating layer, and shows a step-wise or successive decrease in content of inorganic particles b) from the bottom close to the porous polymer substrate to the top, when viewed from the thickness direction of the porous coating layer.
    Type: Grant
    Filed: August 28, 2017
    Date of Patent: April 13, 2021
    Assignee: LG CHEM, LTD.
    Inventors: Chan-Jong Kim, Su-Jin Yoon
  • Patent number: 10978687
    Abstract: A gel polymer coating separator with a multi-core-single-shell structure and a preparation method thereof for making lithium-ion batteries.
    Type: Grant
    Filed: August 22, 2017
    Date of Patent: April 13, 2021
    Assignee: Shenzhen Senior Technology Material Co., Ltd.
    Inventors: Liu-Hui Liao, Jiang Cao, Xue-Mei Yang, Bin Tan
  • Patent number: 10971711
    Abstract: The separator is used in a battery. The separator includes a porous film and a columnar filler. The porous film is made of resin. The columnar filler is made of insulating ceramic. The columnar filler is filled in the porous film. The axial direction of the columnar filler is in line with the thickness direction of the porous film.
    Type: Grant
    Filed: October 5, 2018
    Date of Patent: April 6, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kazuhisa Takeda, Yuji Yokoyama
  • Patent number: 10953591
    Abstract: An embossed porous membrane wipe and/or a method of making and/or using such embossed microporous membrane wipe. The preferred embossed microporous membrane wipe includes a microporous membrane embossed alone or with a polypropylene nonwoven. The nonwoven may be a spunbond, meltblown, and/or electrospun nonwoven. The microporous membrane may include a biaxially oriented microporous membrane. The biaxially oriented microporous membrane may be made from one or more block copolymers of polyethylene and/or polypropylene. A method of using such an embossed microporous membrane, composite or laminate wipe for skin oil blotting is also provided.
    Type: Grant
    Filed: March 19, 2015
    Date of Patent: March 23, 2021
    Assignee: Celgard, LLC
    Inventors: Karl F. Humiston, Kristoffer K. Stokes, Victor J. Lin, Jui-Hung Huang
  • Patent number: 10950838
    Abstract: A nonaqueous electrolyte secondary battery including: a nonaqueous electrolyte secondary battery separator including a polyolefin porous film; a porous layer containing a polyvinylidene fluoride-based resin; a positive electrode plate having a capacitance falling within a specific range; and a negative electrode plate having a capacitance falling within a specific range, wherein: the polyolefin porous film has a given rate of diminution of diethyl carbonate and a given spot diameter of the diethyl carbonate; the porous layer is provided between the nonaqueous electrolyte secondary battery separator and at least one of the positive electrode plate and the negative electrode plate; and the polyvinylidene fluoride-based resin contained in the porous layer contains an ?-form polyvinylidene fluoride-based resin in an amount of not less than 35.0 mol %.
    Type: Grant
    Filed: December 18, 2018
    Date of Patent: March 16, 2021
    Assignee: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Eiko Kashiwazaki, Toshihiko Ogata, Ichiro Arise, Chikara Murakami
  • Patent number: 10944088
    Abstract: A laminated porous film includes a porous base material layer containing polyolefin as a main component; a filler layer containing inorganic particles as a main component; and a resin layer containing resin particles as a main component, the resin particles showing an endothermic curve satisfying conditions (1) and (2) below, the endothermic curve being obtained by differential scanning calorimetry. Condition (1): a temperature at which DDSC is not less than 0.10 mW/min/mg is not less than 70° C. Condition (2): endothermic amount calculated from an area of the endothermic curve in a range of not less than 50° C. and not more than 70° C. is not less than ?20.0 J/g.
    Type: Grant
    Filed: October 19, 2017
    Date of Patent: March 9, 2021
    Assignee: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventor: Junji Suzuki
  • Patent number: 10944086
    Abstract: Provided is a separator for a battery in which, when a ratio of a total length of line segments (Sa), in which an arbitrary straight line (La) intersects with resin fibers (4), to a total length of the straight line (La) on a cross-section of the separator in a thickness direction (TD) is represented by s (%) and when a thickness of the separator is represented by d (?m), 0<s?100, 3?d?50, and 300?d×s?1500 are satisfied, the straight line (La) being parallel to a first main surface (40a) and crossing the cross-section.
    Type: Grant
    Filed: October 16, 2015
    Date of Patent: March 9, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hiroya Umeyama, Harunari Shimamura
  • Patent number: 10930913
    Abstract: A composite membrane comprising an organic film layer; and a plurality of ion conductive inorganic particles disposed in the organic film layer, wherein the organic film layer comprises a crosslinked copolymer, and the crosslinked copolymer comprises a fluorine-containing first repeating unit and at least one repeating unit selected from a fluorine-free second repeating unit and a fluorine-free third repeating unit.
    Type: Grant
    Filed: October 5, 2018
    Date of Patent: February 23, 2021
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Wonsung Choi, Kyounghwan Choi, Myungjin Lee, Toshinori Sugimoto, Shintaro Kitajima
  • Patent number: 10916963
    Abstract: A rechargeable battery using a solution of an aluminum salt as an electrolyte is disclosed, as well as methods of making the battery and methods of using the battery.
    Type: Grant
    Filed: September 1, 2017
    Date of Patent: February 9, 2021
    Assignee: Everon24, Inc.
    Inventors: Rahul Mukherjee, Nikhil A. Koratkar
  • Patent number: 10854869
    Abstract: Apparatus, systems, and methods described herein relate to safety devices for electrochemical cells comprising an electrode tab electrically coupled to an electrode, the electrode including an electrode material disposed on a current collector. In some embodiments, a fuse can be operably coupled to or formed in the electrode tab. In some embodiments, the fuse can be formed by removing a portion of the electrode tab. In some embodiments, the fuse can include a thin strip of electrically resistive material configured to electrically couple multiple electrodes. In some embodiments, the current collector can include a metal-coated deformable mesh material such that the current collector is self-fusing. In some embodiments, the fuse can be configured to deform, break, melt, or otherwise discontinue electrical communication between the electrode and other components of the electrochemical cell in response to a high current condition, a high voltage condition, or a high temperature condition.
    Type: Grant
    Filed: August 17, 2018
    Date of Patent: December 1, 2020
    Assignee: 24M Technologies, Inc.
    Inventors: Ricardo Bazzarella, Naoki Ota
  • Patent number: 10854863
    Abstract: Provided is a separator for a secondary battery including: a porous substrate; and a coating layer formed on the porous substrate, wherein the coating layer includes a plurality of inorganic particles and a binder for binding the plurality of inorganic particles, and the binder includes a copolymer of a monomer mixture including an acrylamide-based monomer, a vinyl cyanide monomer, and an acrylic monomer having a carboxyl group.
    Type: Grant
    Filed: October 16, 2018
    Date of Patent: December 1, 2020
    Assignees: SK INNOVATION CO., LTD., SK IE TECHNOLOGY CO., LTD.
    Inventors: Yun Bong Kim, Su Ji Lee, Kyu Young Cho, Won Sub Kwack, Hye Jin Kim
  • Patent number: 10847845
    Abstract: A three-dimensional all-solid-state lithium ion batteries including a cathode protection layer, the battery including: a cathode including a plurality of plates which are vertically disposed on a cathode current collector; a cathode protection layer disposed on a surfaces of the cathode and the cathode current collector; a solid state electrolyte layer disposed on the cathode protection layer; an anode disposed on the solid state electrolyte layer; and an anode current collector disposed on the anode, wherein the cathode protection layer is between the cathode and the solid state electrolyte layer, and wherein the solid state electrolyte layer is between the cathode protection layer and the anode.
    Type: Grant
    Filed: January 25, 2017
    Date of Patent: November 24, 2020
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Kyounghwan Kim, Sungjin Lim, Hwiyeol Park, Jin S. Heo, Hojung Yang, Huisu Jeong
  • Patent number: 10840549
    Abstract: A secondary battery includes a positive electrode, a negative electrode arranged opposite to the positive electrode, a composite electrolyte interposed between the positive electrode and the negative electrode, the composite electrolyte containing an organic electrolyte and at least one of inorganic compound particles and organic compound particles; and a fibrous substance existed in both of the composite electrolyte and at least one of the positive electrode and the negative electrode.
    Type: Grant
    Filed: August 31, 2018
    Date of Patent: November 17, 2020
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Takuya Iwasaki, Norio Takami, Yasuhiro Harada
  • Patent number: 10840493
    Abstract: Disclosed are a separator for a rechargeable battery including a porous substrate and a heat resistance layer on at least one surface of the porous substrate, wherein the heat resistance layer includes an acryl-based heat resistance binder, a water-soluble binder, and a filler, and the acryl-based heat resistance binder includes a structural unit derived from (meth)acrylate or (meth)acrylic acid, a cyano group-containing structural unit and a sulfonate group-containing structural unit, and a rechargeable lithium battery including the same.
    Type: Grant
    Filed: May 17, 2018
    Date of Patent: November 17, 2020
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Dongwan Seo, Hyeonsun Choi, Jinkyu Park
  • Patent number: 10840492
    Abstract: Provided are a separator capable of being used for a secondary battery such as a nonaqueous electrolyte-solution secondary battery and a secondary battery including the separator. A separator having a first layer including a porous polyethylene and an organic additive is provided. A white index of the first layer is equal to or more than 85 and equal to or less than 98, and a reduction rate of diethyl carbonate dropped on the first layer is equal to or higher than 0.048 mg/s and equal to or lower than 0.067 mg/s. The separator may further include a porous layer over the first layer.
    Type: Grant
    Filed: October 24, 2016
    Date of Patent: November 17, 2020
    Assignee: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Junji Suzuki, Toshihiko Ogata
  • Patent number: 10833349
    Abstract: An energy storage device includes: an electrode assembly which includes: an approximately rectangular positive electrode; an approximately rectangular negative electrode which is stacked alternately with the positive electrode; and a strip-like elongated separator having a base material layer and an inorganic layer which is made to overlap with the first base material layer, wherein the elongated separator is arranged between the positive electrode and the negative electrode, and the base material layer of the elongated separator faces the negative electrode in an opposed manner between the positive electrode and the negative electrode.
    Type: Grant
    Filed: March 14, 2016
    Date of Patent: November 10, 2020
    Assignee: GS YUASA INTERNATIONAL LTD.
    Inventors: Kenta Nakai, Tomonori Kako, Akihiko Miyazaki, Sumio Mori
  • Patent number: 10826041
    Abstract: A separator includes a substrate and a coating layer on at least a surface of the substrate, the coating layer including first organic particles, second organic particles, and a first binder, the first organic particles have a smaller mean particle diameter (D50) than that of the second organic particles, and at least one selected from the first organic particles and the second organic particles has a core-shell structure.
    Type: Grant
    Filed: January 29, 2019
    Date of Patent: November 3, 2020
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Jungyoon Lee, Gain Kim, Yongkyoung Kim
  • Patent number: 10826039
    Abstract: An electrode assembly for a secondary battery having reduced internal resistance while adhesion between a separator and an electrode is maintained and having improved electrolyte impregnation the electrode assembly including a separator having a processed area having undergone a corona discharging process and a non-processed area.
    Type: Grant
    Filed: August 10, 2017
    Date of Patent: November 3, 2020
    Assignee: LG CHEM, LTD.
    Inventors: Sang Kyun Lee, Ju Hyeon Cho, Cha-Hun Ku, Seok Jin Kim, Duck Hoe Kim
  • Patent number: 10818898
    Abstract: A separator for electrochemical elements includes beaten solvent-spun cellulose fibers and rayon fibers having a fiber diameter of 9.5 ?m or less. More preferably, the separator for electrochemical elements has a content of the rayon fibers relative to all fibers of 10 to 25% by mass, and can be applied to electrochemical elements such as electric double layer capacitors, hybrid capacitors, redox capacitors, and lithium secondary batteries. The separator can provide low internal short circuit failure rates and high surface strength.
    Type: Grant
    Filed: May 1, 2017
    Date of Patent: October 27, 2020
    Assignee: MITSUBISHI PAPER MILLS LIMITED
    Inventors: Toshihiro Shigematsu, Masatoshi Kito, Keisuke Ooyama
  • Patent number: 10811658
    Abstract: An object of the present invention is to provide a separator maintaining high rate characteristics and enabling suppression of short circuit. The object is achieved by a separator comprising a substrate having an inner surface and an outer surface, and inorganic particles presented on the outer surface and the inner surface of the substrate, wherein the substrate has a porosity of 55% or more and a mean flow pore size of 30 ?m or less, the inorganic particles have an average particle size of 1.0 to 4.0 ?m, and the inorganic particles comprises 40% by volume or less of particles having a particle size of 1.0 ?m or less and 30 to 75% by volume of particles having a particle size of 2.0 ?m or more.
    Type: Grant
    Filed: September 17, 2013
    Date of Patent: October 20, 2020
    Assignee: Asahi Kasei Kabushiki Kaisha
    Inventors: Yusuke Yamada, Makoto Uozumi, Takashi Misao, Mitsutaka Nakamura, Masaaki Sasayama, Kazufumi Kato
  • Patent number: 10811670
    Abstract: A method for manufacturing an electrode for a lithium secondary battery having reinforced safety is provided. In some embodiments, the method includes spraying a first mixture on a surface of an active material layer to form an insulating layer, wherein the insulating layer is a porous film and consists of a polymer or consists of the polymer and a first binder material, spraying a second mixture on the insulating layer to form a safety reinforcing layer, wherein the safety reinforcing layer consists of the second binder material and the inorganic oxide, and spraying a third mixture comprising microfilaments and a third binder material on the safety reinforcing layer to form an impregnation property improving layer, wherein a weight ratio of the microfilaments to the third binder material ranges from 10:90 to 30:70, and wherein the microfilaments have diameters of 0.1 to 10 ?m and lengths of 50 to 500 ?m.
    Type: Grant
    Filed: September 19, 2016
    Date of Patent: October 20, 2020
    Assignee: LG Chem, Ltd.
    Inventors: Oh Byong Chae, Su Min Lee, Eun Kyung Kim, Sun Young Shin
  • Patent number: 10807878
    Abstract: Provided is a complex oxide that has a space group I-43d, has a high hydrogen content, contains almost no impurity phase, exhibits almost no aluminum substitution in the structure thereof, and is suitable for proton conductivity. This complex oxide is represented by a chemical formula Li7-x-yHxLa3Zr2-yMyO12 (M represents Ta and/or Nb, 3.2<x?7?y, and 0.25<y<2) and is a single phase of a garnet type structure belonging to a cubic system, and the crystal structure thereof is a space group I-43d.
    Type: Grant
    Filed: August 19, 2016
    Date of Patent: October 20, 2020
    Assignee: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
    Inventors: Junji Akimoto, Naoki Hamao, Kunimitsu Kataoka
  • Patent number: 10804519
    Abstract: Disclosed are a separator and an electrochemical device including the same.
    Type: Grant
    Filed: August 9, 2017
    Date of Patent: October 13, 2020
    Assignee: LG CHEM, LTD.
    Inventors: Su-Jin Yoon, Hye-Jin Kwon, Min-Ji Kim, Chan-Jong Kim, Kwan-Woo Nam
  • Patent number: 10790492
    Abstract: A polyolefin microporous membrane has a variation range of F25 value in a longitudinal direction of 1 MPa or less; a thickness of 3 ?m or more and less than 7 ?m; and a length of 1,000 m or more (wherein the F25 value is a value obtained by measuring a load value applied to a test specimen when the test specimen is stretched by 25% using a tensile tester; and dividing the load value by a value of a cross-sectional area of a test specimen).
    Type: Grant
    Filed: March 1, 2017
    Date of Patent: September 29, 2020
    Assignee: Toray Industries, Inc.
    Inventors: Naoki Mizuno, Masami Sugata
  • Patent number: 10777799
    Abstract: The present invention provides an optimal non-aqueous electrolyte secondary battery having high durability against high rate charging and discharging and excellent safety. The non-aqueous electrolyte secondary battery 100 according to the present invention comprises a positive electrode 10, a negative electrode 20 and a separator 30 which is interposed between the positive electrode 10 and the negative electrode 20. The separator 30 has a two-layer structure which is composed of a porous polyethylene layer 34 mainly composed of polyethylene, and a porous polymer layer 32 mainly composed of a polymer having higher oxidation resistance than that of the polyethylene, and an inorganic filler layer 40 including an inorganic filler and a binder is formed on the surface of the polyethylene layer 34 on which the porous polymer layer 32 is not formed.
    Type: Grant
    Filed: November 26, 2010
    Date of Patent: September 15, 2020
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Tomoyoshi Ueki, Naoyuki Wada, Yoshiyuki Ozaki
  • Patent number: 10777796
    Abstract: A secondary battery separator includes a porous base material; and a porous layer stacked on at least one surface of the porous base material, the porous layer being mainly composed of inorganic particles, and two or more organic resins having different melting points, the porous layer including a fluororesin as at least one of the organic resins, the secondary battery separator satisfying at least one of (A) and/or (B): (A) the porous layer has a melting point of 130° C. or higher and 20° C. or higher and lower than 130° C.; and (B) the porous layer has a melting point of 130° C. or higher, and includes an amorphous organic resin.
    Type: Grant
    Filed: March 16, 2017
    Date of Patent: September 15, 2020
    Assignee: Toray Industries, Inc.
    Inventors: Nobuyasu Kai, Akimitsu Tsukuda
  • Patent number: 10777798
    Abstract: According to the present disclosure, the nonaqueous secondary battery includes: an electrode body including a positive electrode, a negative electrode, and a separator; and a nonaqueous electrolyte. At least one electrode of the positive electrode and the negative electrode and the separator satisfy any of conditions below: (1) the electrode and the separator are in contact with each other; (2) the separator has an O/C ratio of 0.1 or more and 0.2 or less; (3) the separator has a surface roughness Ra of 0.05 ?m or more and 0.3 ?m or less; and (4) a ratio of the surface roughness Ra of the separator to the surface roughness Ra of the electrode is 0.1 or more and 0.5 or less.
    Type: Grant
    Filed: November 5, 2018
    Date of Patent: September 15, 2020
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Natsumi Hiramoto
  • Patent number: 10777797
    Abstract: A battery separator for a lithium-ion battery includes a nonwoven fiber mat that is composed of entangled microfibers having an average fiber diameter of less than 6 microns. The nonwoven fiber mat also includes a binder that binds the microfibers together and a polymer component that is dispersed homogeneously through or within the entangled microfibers so that the polymer component is uniformly distributed throughout the nonwoven fiber mat and so that the entangled microfibers, the binder, and the polymer component form a single layer component or product. The polymer component is configured to melt within the nonwoven fiber mat when exposed to a sufficiently high heat in order to effectively interrupt an electro-chemical process of the lithium-ion battery and thereby prevent overheating of the lithium-ion battery. The nonwoven fiber mat is typically between 0.1 and 20 mils thick.
    Type: Grant
    Filed: April 8, 2019
    Date of Patent: September 15, 2020
    Assignee: Johns Manville
    Inventors: Heath H Himstedt, Souvik Nandi
  • Patent number: 10770746
    Abstract: A method for producing a lithium ion secondary battery in which a positive electrode, a heat-resistant insulating layer provided separator having a heat-resistant insulating layer formed of oxide particles on one surface of a resin porous substrate, and a negative electrode are laminated on one another, and a nonaqueous electrolyte is impregnated in the heat-resistant insulating layer provided separator, includes drying the heat-resistant insulating layer provided separator before laminating so that the water content in the heat-resistant insulating layer provided separator remains in a predetermined range. In the drying, the water content in the heat-resistant insulating layer provided separator is decreased to the predetermined range by controlling the dew point and maintaining the predetermined range after reaching the predetermined range of water content.
    Type: Grant
    Filed: March 19, 2015
    Date of Patent: September 8, 2020
    Assignee: Envision AESC Japan Ltd.
    Inventors: Ikuma Matsuzaki, Kazuki Miyatake, Keisuke Matsumoto, Kodai Nagano
  • Patent number: 10763510
    Abstract: The present invention relates to: an alumina powder wherein a ratio (TBD/LBD) of a tapped bulk density (TBD) to a loose bulk density (LBD) is 1.5 or more; an alumina slurry containing the same; an alumina-containing coating layer; a multilayer separation membrane; and a secondary battery.
    Type: Grant
    Filed: September 6, 2017
    Date of Patent: September 1, 2020
    Assignee: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Jihoon Rhee, Taebong Kim, Suk Lee
  • Patent number: 10714794
    Abstract: A lithium ion secondary battery includes a housing. An electrode group and an electrolytic solution are in the housing. The electrode group is immersed in the electrolytic solution. The electrode group includes a positive electrode including a positive electrode active material layer and a negative electrode including a negative electrode current collector and a negative electrode active material layer. The negative electrode active material layer is disposed on a surface of the negative electrode current collector. A metal piece is electrically connected to the negative electrode current collector. The metal piece is disposed at a position at which at least a part of the metal piece is immersed in the electrolytic solution. An oxidation-reduction potential of the metal piece is within an overdischarging voltage range and is lower than an oxidation-reduction potential of the negative electrode current collector.
    Type: Grant
    Filed: February 27, 2018
    Date of Patent: July 14, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Katsuhiko Nagaya, Shinobu Okayama, Kyoko Kikuchi
  • Patent number: 10707489
    Abstract: A high solids content paste for fabrication of secondary battery electrodes may comprise: a negative active material or a positive active material; a binder; a solvent; and a hyperdispersant; wherein the high solids content paste has a specific viscosity chosen for a particular coating tool and a composition such that the high solids content paste will maintain a deposited shape after coating at least until the high solids content paste has dried and wherein the dry coating thickness is in the range of 5 microns to 300 microns. The high solids content paste with negative active material has a viscosity in the range of 30,000 cP to 45,000 cP and a corresponding density of 1.40 g/cc to 1.43 g/cc. The high solids content paste with positive active material has a viscosity in the range of 25,479 cP to 47,184 cP and a corresponding density of 2.72 g/cc to 2.73 g/cc.
    Type: Grant
    Filed: September 25, 2015
    Date of Patent: July 7, 2020
    Assignee: Applied Materials, Inc.
    Inventor: Subramanya P. Herle
  • Patent number: 10707467
    Abstract: A separator for a rechargeable battery includes a porous substrate and an adhesive layer on at least one surface thereof. The adhesive layer includes a first binder, a second binder, and a filler. The first binder includes a structural unit derived from vinylidene fluoride and a structural unit derived from hexafluoropropylene. The structural unit derived from hexafluoropropylene is included in an amount of about 10 wt % or less based on a total weight of the first binder. A weight average molecular weight of the first binder ranges from about 800,000 to about 1,500,000. The second binder includes a structural unit derived from vinylidene fluoride and a structural unit derived from hexafluoropropylene. The structural unit derived from hexafluoropropylene is included in an amount of 10 wt % or less based on a total weight of the second binder. A weight average molecular weight of the second binder is 600,000 or less.
    Type: Grant
    Filed: May 16, 2017
    Date of Patent: July 7, 2020
    Assignee: SAMSUNG SDI CO., LTD.
    Inventors: Jinwoo Kim, Jungyoon Lee, Sangho Lee
  • Patent number: 10693116
    Abstract: Provided is a porous separator for a secondary battery including an inorganic oxide layer formed on a porous substrate by an atomic layer deposition process, such that a thin separator having excellent heat stability, permeability and electrolyte impregnability may be provided by controlling specific conditions in the process and thicknesses of the inorganic oxide layers on a surface and inside of the porous separator.
    Type: Grant
    Filed: April 12, 2017
    Date of Patent: June 23, 2020
    Assignees: SK Innovation Co., Ltd., SK IE Technology Co., Ltd.
    Inventors: Hye Jin Kim, Won Sub Kwack, Min Sang Park
  • Patent number: 10677587
    Abstract: In regard to at least one of long separator sheets (12a, 12b), measurement is carried out to measure the amount of curl at an edge of the at least one of the long separator sheets (12a, 12b) while applying tension to the at least one of the long separator sheets (12a, 12b) in the lengthwise direction (MD) of the at least one of the long separator sheets (12a, 12b), the edge being parallel to the lengthwise direction (MD) of the at least one of the long separator sheets (12a, 12b). This makes it possible to provide a method of measuring the amount of curl in a separator, a slitting apparatus, and a curl amount measuring apparatus, each of which is capable of carrying out a highly accurate nondestructive measurement of the amount of curl without having to cut a sample from a long separator sheet.
    Type: Grant
    Filed: January 27, 2017
    Date of Patent: June 9, 2020
    Assignee: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Daijiro Hoshida, Hiroko Nakashima, Takahiro Okugawa
  • Patent number: 10680223
    Abstract: Disclosed is a laminated separator including a first polyolefin microporous layer and a second polyolefin microporous layer which is laminated on the first polyolefin microporous layer and which is different from the first polyolefin microporous layer, wherein at least one of the first microporous layer and the second microporous layer includes an inorganic particle having a primary particle size of 1 nm or more and 80 nm or less.
    Type: Grant
    Filed: May 5, 2016
    Date of Patent: June 9, 2020
    Assignee: Asahi Kasei E-materials Corporation
    Inventors: Masahiro Ohashi, Keitaro Ameyama, Yuzuru Sakakibara
  • Patent number: 10673046
    Abstract: A modified separator for a high-energy lithium metal-based electrochemical cell and methods of formation relating thereto are provided. The modified separator includes a substrate including a dopant and a coating layer disposed on the doped substrate. The dopant and compound comprising the coating layer are independently selected from the group consisting of: aluminum oxide (Al2O3), titanium dioxide (TiO2), zirconium dioxide (ZrO2), zinc oxide (ZnO), iron oxide (Fe2O3), tin oxide (SnO), silicon oxide (SiO2), tantalum oxide (Ta2O5), lanthanum oxide (La2O3), hydrofluoroolefin (HfO), cerium oxide (CeO2), and combinations thereof.
    Type: Grant
    Filed: April 13, 2018
    Date of Patent: June 2, 2020
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Gayatri V. Dadheech, Li Yang, Mei Cai, Biqiong Wang
  • Patent number: 10665903
    Abstract: A secondary battery includes: a cathode, an anode, and an electrolytic solution including a sulfuric acid compound represented by Xn+[M(Rf)a(CN)b(SO4)c]m?, where Xn+ is an ion such as a metal ion, M is an element such as a transition metal element, Rf is a group such as a fluorine group, a is an integer of 0 to 4, b is an integer of 0 to 5, c is an integer of 1 to 4, m is an integer of 1 to 3, and n is an integer of 1 or 2. The cathode, the anode, and the electrolytic solution are provided inside a film-like outer package member.
    Type: Grant
    Filed: January 26, 2016
    Date of Patent: May 26, 2020
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Masayuki Ihara, Shigeru Fujita
  • Patent number: 10662071
    Abstract: Alumina having excellent electrolytic solution stability, a slurry containing the same, an alumina porous film using the same, a laminated separator, a nonaqueous electrolyte secondary battery and a method for manufacturing the nonaqueous electrolyte secondary battery are provided. Alumina is provided including one or more selected from K, Mg, Ca, Sr, Ba and La in the total amount of 200 to 50,000 ppm by mass, wherein a surface concentration of one or more elements is 0.5 to 20 at % in total. Alumina is provided in which in an infrared absorption spectrum of the alumina obtained by Fourier-transform infrared spectroscopy, a peak having an intensity larger than that of a baseline defined by a line segment connecting an intensity at 3,400 cm?1 and an intensity at 3,500 cm?1 and having a half width of 90 cm?1 or less, does not exist in a range of 3,400 to 3,500 cm?1.
    Type: Grant
    Filed: September 5, 2017
    Date of Patent: May 26, 2020
    Assignee: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Hirotaka Ozaki, Hiroyuki Ando
  • Patent number: 10665889
    Abstract: Provided is an electrode stack formed by integrating a first separator, a first electrode plate, a second separator, and a second electrode plate. The first separator has a first separator body, and a first bonding layer that is formed on a principal surface of the first separator body and contains first polyethylene particles. The second separator has a second separator body, and a second bonding layer that is formed on a principal surface of the second separator body and contains second polyethylene particles. The number of particles of the first polyethylene particles per unit area of the first bonding layer is larger than the number of particles of the second polyethylene particles per unit area of the second bonding layer.
    Type: Grant
    Filed: April 25, 2018
    Date of Patent: May 26, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Takahiro Kuhara
  • Patent number: 10665843
    Abstract: A separator-integrated electrode plate includes a current collecting sheet; an active material layer provided on the current collecting sheet, and a separator layer provided on the active material layer and configured to allow ions in electrolyte to pass through. The separator layer includes a polyimide layer provided on the active material layer and made of polyimide that has been melted in a solvent and then deposited as a film, and a polyolefin particle layer provided on the polyimide layer and made of polyolefin resin particles accumulated on the polyimide layer, the polyolefin resin particles having a melting point of 140° C. or less.
    Type: Grant
    Filed: August 14, 2017
    Date of Patent: May 26, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Shingo Komura
  • Patent number: 10661528
    Abstract: Provided is a separator including a first later consisting of a porous polyolefin and a secondary battery utilizing the separator. The first layer exhibits a temperature-increase convergence time equal to or longer than 2.9 s·m2/g and equal to or shorter than 5.7 s·m2/g when the first layer is irradiated with a microwave having a frequency of 2455 MHz and an output power of 1800 W after being dipped in N-methylpyrrolidone containing 3 wt % of water. A minimum height of a ball placed over the first layer and having a diameter of 14.3 mm and a weight of 11.9 g is equal to or more than 50 cm and equal to or less than 150 cm, the minimum height causing a split in the first layer when the ball freely falls on the first layer.
    Type: Grant
    Filed: October 24, 2016
    Date of Patent: May 26, 2020
    Assignee: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Chikae Yoshimaru, Chikara Murakami, Takahiro Okugawa
  • Patent number: 10665840
    Abstract: Cell stacks are presented that include binders for wet and dry lamination processes. The cell stacks, when laminated, produce battery cells (or portions thereof). The cell stacks include a cathode having a cathode active material disposed on a cathode current collector. The cell stacks also include an anode having an anode active material disposed on an anode current collector. The anode is oriented towards the cathode such that the anode active material faces the cathode active material. A separator is disposed between the cathode active material and the anode active material and comprising a binder comprising a PVdF-HFP copolymer. In certain instances, an electrolyte fluid is in contact with the separator. Methods of laminating the cell stacks are also presented.
    Type: Grant
    Filed: August 28, 2018
    Date of Patent: May 26, 2020
    Assignee: Apple Inc.
    Inventors: Mikyong Yoo, Richard M. Mank, Bookeun Oh
  • Patent number: 10665844
    Abstract: A lithium metal electrode and a lithium metal battery that includes the lithium metal electrode are disclosed. The lithium metal electrode includes a current collector; a lithium metal layer on exposed portions of the current collector; an ionic diffusion layer on the lithium metal layer; and a porous electrical insulation layer. The porous electrical insulation layer includes an insulation layer disposed on the current collector and having at least one through hole that completely surrounds the lithium metal layer and the ionic diffusion layer; and an inhibition layer disposed on the insulation layer and having a plurality of second through holes. Lithium dendrites will mostly plate in the at least one through hole of the insulation layer and will not plate upwards due to the inhibition layer. Hence, the lithium dendrites will not penetrate through the electrical insulator so that safety of the lithium metal battery is greatly improved.
    Type: Grant
    Filed: October 10, 2017
    Date of Patent: May 26, 2020
    Assignees: PROLOGIUM TECHNOLOGY CO., LTD., PROLOGIUM HOLDING INC.
    Inventor: Szu-Nan Yang
  • Patent number: 10658641
    Abstract: The present invention relates to a separator comprising a coating layer and a battery using the same, the separator having improved adhesive force to an electrode, thereby minimizing the rate of thickness change. More specifically, the present invention relates to a separator having a coating layer on one or both surfaces of a base film, the coating layer comprising an acrylic-based copolymer having a glass transition temperature of less than or equal to 80° C. and an inorganic particle, so as to have improved adhesive force and heat resistance, thereby being applicable in electrochemical batteries of various sizes and having excellent thermal stability and dimensional stability.
    Type: Grant
    Filed: November 21, 2014
    Date of Patent: May 19, 2020
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Byung Min Lee, Ha Na Kim, Nam Hyo Kim, Myung Kook Park, Hyeon Sun Choi
  • Patent number: 10658693
    Abstract: A flow battery includes a first liquid containing a first electrode mediator dissolved therein, a first electrode immersed in the first liquid, a first active material immersed in the first liquid, and a first circulation mechanism that circulates the first liquid between the first electrode and the first active material. The first electrode mediator includes a carbazole derivative, and the carbazole derivative has a substituent at positions 3, 6, and 9 of a carbazole skeleton thereof.
    Type: Grant
    Filed: October 11, 2017
    Date of Patent: May 19, 2020
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventor: Honami Nariyama