Patents Examined by Laura Weiner
  • Patent number: 10535877
    Abstract: A non-aqueous electrolyte secondary battery includes a non-aqueous electrolyte and an electrode body in which a positive electrode plate and a negative electrode plate are layered with a separator interposed therebetween. The positive electrode plate contains a phosphate compound. The negative electrode plate contains a graphite-based material, an amorphous/non-crystalline carbon material, and a rubber-based binder. The ratio of the coverage of the rubber-based binder on the amorphous/non-crystalline carbon material to the coverage of the rubber-based binder on the graphite-based material is more than 0 and 0.5 or less.
    Type: Grant
    Filed: September 20, 2016
    Date of Patent: January 14, 2020
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Kouhei Tuduki, Atsushi Fukui, Katsunori Yanagida
  • Patent number: 10535867
    Abstract: The present teaching provides a non-aqueous electrolyte secondary battery provided with a non-aqueous electrolyte solution having a composition able to achieve high battery performance even in an extremely low temperature region (for example, ?30° C. or lower). The non-aqueous electrolyte solution disclosed herein contains, as non-aqueous solvents, ethylene carbonate (EC), propylene carbonate (PC), dimethyl carbonate (DMC), ethyl methyl carbonate (EMC) and ethyl propionate (EP), and when the total volume of the non-aqueous solvents is 100 vol. %, the content of EC is 20 to 30 vol. %, the content of PC is 5 to 10 vol. %, the content of EP is 5 to 10 vol. %, and the content of DMC+EMC is 50 to 70 vol. %.
    Type: Grant
    Filed: January 12, 2018
    Date of Patent: January 14, 2020
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Kenta Ishii, Ryosuke Ohsawa, Koji Abe, Kei Shimamoto, Makoto Babazono
  • Patent number: 10529978
    Abstract: It is an object of the present invention to provide a nonaqueous electrolyte secondary battery improved in output after storage in a charged state. An embodiment of the present invention provides a nonaqueous electrolyte secondary battery including an electrode assembly having a structure in which a positive plate and a negative plate are stacked with a separator therebetween. The positive plate contains tungsten and a phosphate compound. The negative plate contains a graphitic carbon material as a negative electrode active material and a noncrystalline carbon material stuck on the surface thereof. The negative plate contains tungsten or a tungsten compound on the surface of the noncrystalline carbon material.
    Type: Grant
    Filed: March 8, 2016
    Date of Patent: January 7, 2020
    Assignee: SANYO Electric Co., Ltd.
    Inventors: Takatoshi Higuchi, Atsushi Fukui, Takahiro Isono
  • Patent number: 10522863
    Abstract: This invention relates to an electrolyte solution for a redox flow battery containing an organic active material, in which an organic compound useful as a single active material for a cathode and an anode is dissolved in a water-soluble solvent, and to a redox flow battery using the same. The electrolyte solution of the invention is an aqueous electrolyte solution obtained by dissolving an active material in an aqueous solvent, and is thus very stable due to the low risk of fire or explosion. Furthermore, the organic compound is applied as a single active material to the cathode and the anode, and thus, when the capacity of the battery is decreased due to the permeation of the active material through the separator, the battery capacity can be restored through rebalancing.
    Type: Grant
    Filed: September 6, 2016
    Date of Patent: December 31, 2019
    Assignee: Korea Institute of Energy Research
    Inventors: Chang-soo Jin, Sun-hwa Yeon, Myung-seok Jeon, Kyoung-hee Shiin, Bum-suk Lee, Se-Kook Park, Cheon Beom Park, Jaeyoung So
  • Patent number: 10511026
    Abstract: A negative electrode active material of an embodiment for a nonaqueous electrolyte battery includes silicon or silicon oxide including silicon inside, a carbonaceous substance containing the silicon or the silicon oxide including silicon inside, and a phase including a silicate compound and a conductive assistant, the phase being interposed between the silicon or the silicon oxide including silicon inside and the carbonaceous substance. The silicate compound is a complexed oxide including an oxide including at least one element selected from the group consisting of; an alkaline earth element, a transition metal element, and a rare-earth element and a silicon oxide.
    Type: Grant
    Filed: September 2, 2016
    Date of Patent: December 17, 2019
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Takayuki Fukasawa, Kenji Essaki, Tomokazu Morita, Takashi Kuboki
  • Patent number: 10505226
    Abstract: An electrolyte for a lithium battery and a lithium battery including the electrolyte, the electrolyte including a compound represented by Formula 1; and LiPO2F2, wherein, in Formula 1, R1 and R2 are each independently a substituted or unsubstituted C1-C10 alkyl group or -L1-CN; and L and L1 are each independently a substituted or unsubstituted C1-C5 alkylene group, a substituted or unsubstituted C6-C10 arylene group, or a substituted or unsubstituted C3-C20 heteroarylene group.
    Type: Grant
    Filed: February 13, 2017
    Date of Patent: December 10, 2019
    Assignee: SAMSUNG SDI CO., LTD.
    Inventors: Seungtae Lee, Aeran Kim, Miyoung Son, Hyunbong Choi, Aehui Goh, Woocheol Shin, Myungheui Woo, Harim Lee
  • Patent number: 10497933
    Abstract: A cathode active material including a first composite oxide represented by Formula (1): xV2O5.Li3PO4??(1) wherein, in Formula 1, x satisfies 2<x?10.
    Type: Grant
    Filed: March 22, 2017
    Date of Patent: December 3, 2019
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Satoshi Fujiki, Tomoyuki Shiratsuchi, Yuichi Aihara
  • Patent number: 10483544
    Abstract: Provided is a lithium secondary battery including an anode containing agglomerate artificial graphite having pores with an average diameter of 80 to 150 nm; and an electrolyte solution having a viscosity of 5.0 cP or less at 25° C. The lithium secondary battery according to the present invention may have excellent life characteristics, high temperature storage characteristics and output characteristics.
    Type: Grant
    Filed: March 2, 2017
    Date of Patent: November 19, 2019
    Assignee: SK Innovation Co., Ltd.
    Inventors: Jee Hee Lee, Sang Jin Kim, Hyo Sang Kim, Jung Hwan Kim
  • Patent number: 10468720
    Abstract: An object is to provide a nonaqueous electrolyte and a nonaqueous-electrolyte secondary battery which have excellent discharge load characteristics and are excellent in high-temperature storability, cycle characteristics, high capacity, continuous-charge characteristics, storability, gas evolution inhibition during continuous charge, high-current-density charge/discharge characteristics, discharge load characteristics, etc. The object has been accomplished with a nonaqueous electrolyte which comprises: a monofluorophosphate and/or a difluorophosphate; and further a compound having a specific chemical structure or specific properties.
    Type: Grant
    Filed: September 9, 2015
    Date of Patent: November 5, 2019
    Assignee: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Hiroyuki Tokuda, Minoru Kotato, Shinichi Kinoshita
  • Patent number: 10439210
    Abstract: In an aspect, a positive active material composition for a rechargeable lithium battery including a positive active material coated with a vanadium pentaoxide (V2O5) and an aqueous binder, a positive electrode including the same, and a rechargeable lithium battery including the positive electrode is disclosed.
    Type: Grant
    Filed: May 19, 2016
    Date of Patent: October 8, 2019
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Seung-Hun Han, Myung-Duk Lim, Chae-Woong Cho
  • Patent number: 10439222
    Abstract: A positive electrode composition for a rechargeable lithium battery includes a positive active material, a binder, and an aqueous solvent, wherein the binder includes carboxylmethyl cellulose having an average polymerization degree of about 700 to about 1200, and a positive electrode for a rechargeable lithium battery and a rechargeable lithium battery including the same are provided.
    Type: Grant
    Filed: December 10, 2015
    Date of Patent: October 8, 2019
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Seung-Hun Han, Myung-Duk Lim, Chae-Woong Cho
  • Patent number: 10424775
    Abstract: A lithium battery includes an anode, a cathode, and a protective film disposed on at least one of the anode and the cathode, in which the protective film includes a compound including: i) at least one element selected from a Group 13 element, a Group 14 element, a Group 15 element, and a first Group 16 element; and ii) a second Group 16 element, in which the first Group 16 element is different from the second Group 16 element.
    Type: Grant
    Filed: May 2, 2017
    Date of Patent: September 24, 2019
    Assignees: SAMSUNG ELECTRONICS CO., LTD., SAMSUNG SDI CO., LTD.
    Inventors: Youngeal Kim, Wooyoung Yang, Kihong Kim, Hyorang Kang
  • Patent number: 10424812
    Abstract: An object of the present invention is to provide a non-aqueous electrolytic solution which can improve a non-aqueous electrolyte secondary battery in high-temperature storage characteristics and load characteristics, and a non-aqueous electrolyte secondary battery using the non-aqueous electrolytic solution. The present invention is directed to a non-aqueous electrolytic solution for use in a non-aqueous electrolyte secondary battery which comprises a positive electrode and a negative electrode each being capable of having occluded therein and releasing metal ions, wherein the non-aqueous electrolytic solution contains an electrolyte, a non-aqueous solvent, and a compound represented by the following general formula (A): wherein each of R1, R2, and Y represents a hydrocarbon group having 1 to 12 carbon atoms and optionally having a substituent, and X represents a hydrogen or fluorine atom, wherein R1, R2, and Y are the same or different.
    Type: Grant
    Filed: March 28, 2017
    Date of Patent: September 24, 2019
    Assignee: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Eiji Nakazawa, Shuhei Sawa
  • Patent number: 10418667
    Abstract: The present invention relates to a non-aqueous electrolyte secondary battery (30) which includes: a positive electrode (1); a negative electrode (2); a non-aqueous electrolyte containing a non-aqueous solvent; an outer package (5, 7, 19) receiving the positive electrode (1), the negative electrode (2), and the non-aqueous electrolyte; and a current interrupt valve (14) which interrupts a current in response to an increase in pressure inside the outer package (5, 7, 19). The positive electrode (1) contains a carbonate compound, the non-aqueous solvent contains a fluorinated cyclic carbonate and a fluorinated chain ester, and the total content of the fluorinated cyclic carbonate and the fluorinated chain ester is with respect to the total volume of the non-aqueous solvent, 50 percent by volume or more.
    Type: Grant
    Filed: September 24, 2015
    Date of Patent: September 17, 2019
    Assignee: SANYO Electric Co., Ltd.
    Inventors: Naoya Morisawa, Takanobu Chiga, Takashi Takeuchi
  • Patent number: 10418626
    Abstract: There is provided a positive electrode active material for a nonaqueous electrolyte secondary battery capable of suppressing a decrease in the capacity retention ratio after high-temperature cycles. There is provided a positive electrode active material for a nonaqueous electrolyte secondary battery that includes a secondary particle formed by aggregation of primary particles formed of a lithium transition metal oxide. A rare-earth compound secondary particle formed by aggregation of particles formed of a rare-earth compound adheres to a recess formed between primary particles adjacent to each other on a surface of the secondary particle, and the rare-earth compound secondary particle adheres to both the primary particles adjacent to each other in the recess. The lithium transition metal oxide contains tungsten dissolved therein.
    Type: Grant
    Filed: August 5, 2015
    Date of Patent: September 17, 2019
    Assignee: SANYO Electric Co., Ltd.
    Inventors: Akihiro Kawakita, Takeshi Ogasawara, Daizo Jito
  • Patent number: 10411303
    Abstract: A battery electrolyte comprises: a non-aqueous solvent including a perfluoropolyether that is functionalized at only one molecule end, the perfluoropolyether including perfluoroalkyl chains and oxygen atoms in such a manner that a perfluoroalkyl chain and an oxygen atom are alternately bound to each other; and a metal salt that is a magnesium salt, an alkaline earth metal salt, or an alkali metal salt, and that is dissolved in the non-aqueous solvent.
    Type: Grant
    Filed: May 25, 2017
    Date of Patent: September 10, 2019
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Hirotetsu Suzuki, Nobuhiko Hojo
  • Patent number: 10388951
    Abstract: A composite anode active material includes: a core portion including a crystalline carbonaceous material; a shell portion including a plurality of composite particles deposited on at least a portion of the core portion, wherein each of the composite particles includes a metallic core that is alloyable with lithium; and a coating layer including metal nitride on the surface of the metallic core in an island pattern. A lithium battery including the composite anode active material and a method of preparing the composite anode active material are also provided.
    Type: Grant
    Filed: September 12, 2016
    Date of Patent: August 20, 2019
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Jiyeon Kwak, Youngugk Kim, Heeseon Choi, Yeongap Kim
  • Patent number: 10381644
    Abstract: A non-aqueous electrolyte secondary battery that includes a positive electrode having a positive electrode active material layer and a positive electrode current collector; a negative electrode having a negative electrode active material layer and a negative electrode current collector; a separator interposed between the positive electrode and the negative electrode; and a non-aqueous electrolyte solution, which are enclosed in an exterior material. The positive electrode active material layer includes a lithium transition metal oxide having a layered crystal structure, and the negative electrode active material layer includes a lithium titanium oxide having a spinel-type crystal structure, and having a thickness of 20.0 ?m or more and 33.4 ?m or less. A ratio (R) between the thickness of the positive electrode active material layer and the thickness of the negative electrode active material layer is 0.59?(R)?1.50 or 0.59?(R)?1.14.
    Type: Grant
    Filed: April 21, 2016
    Date of Patent: August 13, 2019
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventor: Masaharu Itaya
  • Patent number: 10381642
    Abstract: Anode comprising an anode material, a protective material and a current collector is provided. The anode material is a mixture comprising an active material, at least one electronically conductive agent and at least one binder. The active material may be an alloy of silicon and lithium or an alloy of silicon oxide and lithium. There is provided a process for the preparation of the anode. Also, there is provided use of the anode in the fabrication of a battery.
    Type: Grant
    Filed: June 20, 2014
    Date of Patent: August 13, 2019
    Assignee: HYDRO-QUÉBEC
    Inventors: Karim Zaghib, Dominic Leblanc, Abdelbast Guerfi, Julie Trottier, Patrick Charest
  • Patent number: 10381647
    Abstract: Carbon or cobalt, which is used as a conductive agent in an electrode of an alkaline secondary cell, is oxidized by oxygen generated from a positive electrode. The conductive agent degraded by oxidization loses its conductivity through repetitive charge and discharge, resulting in shortening of the cycle life of the cell. In an alkaline secondary cell filled with hydrogen, hydrogen generated from a positive electrode is bound to the hydrogen. This prevents a conductive agent in an electrode from being degraded by oxidization. A cell with excellent cycle life characteristic is thus provided.
    Type: Grant
    Filed: January 5, 2015
    Date of Patent: August 13, 2019
    Assignee: EXERGY POWER SYSTEMS, INC.
    Inventor: Kaduo Tsutsumi