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    NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY
    2.
    发明申请
    NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY 有权

    公开(公告)号：US20210151759A1

    公开(公告)日：2021-05-20

    申请号：US17252923

    申请日：2019-02-20

    Applicant: Panasonic Intellectual Property Management Co., Ltd.

    Inventor： Satoshi Nishitani ,  Masaki Deguchi

    IPC: H01M4/58 ,  H01M10/0525 ,  H01M10/0568 ,  H01M10/0567

    Abstract: Disclosed is a non-aqueous electrolyte secondary battery including: a positive electrode; a negative electrode; and an electrolyte solution. The negative electrode contains a negative electrode active material that is capable of electrochemically absorbing and desorbing lithium. The negative electrode active material contains a lithium silicate phase and silicon particles that are dispersed in the lithium silicate phase. The lithium silicate phase is an oxide phase that contains lithium, silicon, and oxygen. The atomic ratio O/Si of oxygen relative to silicon in the lithium silicate phase is greater than 2 and less than 4. The electrolyte solution contains a halogenated benzene. The amount of halogenated benzene contained in the electrolyte solution is 1 ppm or more and 500 ppm or less.

    SECONDARY BATTERY AND ELECTROLYTE SOLUTION
    3.
    发明申请
    SECONDARY BATTERY AND ELECTROLYTE SOLUTION 有权

    公开(公告)号：US20220013780A1

    公开(公告)日：2022-01-13

    申请号：US17295513

    申请日：2019-11-21

    Applicant: Panasonic Intellectual Property Management Co., Ltd.

    Inventor： Satoshi Nishitani ,  Masaki Deguchi

    IPC: H01M4/58 ,  H01M4/38 ,  H01M4/583 ,  H01M10/0562

    Abstract: A secondary battery includes a positive electrode, a negative electrode, and an electrolyte. The negative electrode includes a negative electrode active material capable of electrochemically absorbing and releasing lithium ions, and the negative electrode active material includes a first composite material containing a silicate phase and silicon particles dispersed in the silicate phase. The silicate phase includes at least one of an alkali metal and an alkaline earth metal. The content of the silicon particles in the first composite material is 30 mass % or more and 80 mass % or less. The electrolyte includes lithium fluorosulfonate.

    NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY
    4.
    发明申请
    NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY 审中-公开

    公开(公告)号：US20200091500A1

    公开(公告)日：2020-03-19

    申请号：US16471944

    申请日：2017-12-20

    Applicant: Panasonic Intellectual Property Management Co., Ltd.

    Inventor： Satoshi Nishitani ,  Hiroshi Minami ,  Masaki Deguchi

    IPC: H01M4/131 ,  H01M4/134 ,  H01M4/38 ,  H01M4/485 ,  H01M4/62 ,  H01M4/36 ,  H01M4/587 ,  H01M4/133 ,  H01M10/0567 ,  H01M10/0525

    Abstract: A positive electrode, a negative electrode, and a non-aqueous electrolyte. The negative electrode includes a negative electrode material, a binder, and a thickener, and the negative electrode material includes a lithium silicate phase, and Si particles dispersed in the lithium silicate phase. The ratio of the Si particles in the negative electrode material is 30 mass % or more. The binder includes a poly(meth)acrylic acid, the thickener includes a carboxyalkyl cellulose, and the amount of the poly(meth)acrylic acid relative to 100 parts by mass of the negative electrode material is 0.1 parts by mass or more and 5 parts by mass or less. The non-aqueous electrolyte includes a lithium salt, a non-aqueous solvent, and an acid that exhibits a pKa of 1 to 30 in water at 25° C. The non-aqueous electrolyte secondary battery can suppress the generation of gas during high-temperature storage, and secure excellent cycle characteristics.

    NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY
    6.
    发明申请
    NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY 有权

    公开(公告)号：US20220069307A1

    公开(公告)日：2022-03-03

    申请号：US17415062

    申请日：2019-12-11

    Applicant: Panasonic Intellectual Property Management Co., Ltd.

    Inventor： Chisaki Fujitomo ,  Satoshi Nishitani ,  Junichi Sakamoto ,  Masaki Deguchi

    IPC: H01M4/58 ,  H01M10/0569 ,  H01M4/38

    Abstract: A non-aqueous electrolyte secondary battery including a positive electrode, a negative electrode, and a non-aqueous electrolyte. The negative electrode includes a negative electrode active material capable of electrochemically absorbing and releasing lithium, the negative electrode active material includes a composite material containing a silicate phase and silicon particles dispersed in the silicate phase, and the silicate phase includes at least one of an alkali metal and an alkaline earth metal. The content of the silicon particles in the composite material is above 40 mass % and 80 mass % or less. The non-aqueous electrolyte includes a sultone compound, and the content of the sultone compound in the non-aqueous electrolyte is 2 mass % or less.

    NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY
    7.
    发明申请
    NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY 审中-公开

    公开(公告)号：US20200176771A1

    公开(公告)日：2020-06-04

    申请号：US16639377

    申请日：2018-09-11

    Applicant: Panasonic Intellectual Property Management Co., Ltd.

    Inventor： Yuji Tani ,  Satoshi Nishitani ,  Masaki Deguchi

    IPC: H01M4/525 ,  H01M10/0569 ,  H01M10/052 ,  H01M10/0567 ,  H01M4/02

    Abstract: A non-aqueous electrolyte secondary battery including a positive electrode, a separator, a negative electrode facing the positive electrode with the separator interposed therebetween, and an electrolytic solution containing a solvent and an electrolyte. The positive electrode includes a positive electrode material containing a lithium-nickel composite oxide represented by LiaNibM1−bO2, where M represents at least one selected from the group consisting of Na, Mg, Sc, Y, Mn, Fe, Co, Ni, Cu, Zn, Al, Cr, Pb, Sb and B, 0.95≤a≤1.2, and 0.8≤b≤1. The electrolytic solution contains an ester compound C of an alcohol compound A and a carboxylic acid compound B, and contains at least one of the alcohol compound A and the carboxylic acid compound B in an amount of 15 ppm or more, relative to a mass of the electrolytic solution.

    LITHIUM PRIMARY BATTERY AND NONAQUEOUS ELECTROLYTE SOLUTION USED IN SAME
    8.
    发明公开
    LITHIUM PRIMARY BATTERY AND NONAQUEOUS ELECTROLYTE SOLUTION USED IN SAME 审中-公开

    公开(公告)号：US20240128478A1

    公开(公告)日：2024-04-18

    申请号：US18277148

    申请日：2021-08-03

    Applicant: Panasonic Intellectual Property Management Co., Ltd.

    Inventor： Satoshi Nishitani

    IPC: H01M6/16

    CPC classification number: H01M6/168 ,  H01M2300/0025

    Abstract: A lithium primary battery includes a positive electrode, a negative electrode, and a non-aqueous electrolyte, wherein the positive electrode includes a positive electrode mixture including manganese dioxide, the negative electrode includes at least one of a metal lithium and a lithium alloy, the non-aqueous electrolyte includes an isocyanate compound as a first component, and at least one of a cyclic imide compound and a phthalic acid ester compound as a second component, the non-aqueous electrolyte has an isocyanate compound concentration of 5 mass % or less.

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