SECONDARY BATTERY SYSTEM
    4.
    发明公开

    公开(公告)号:US20230411735A1

    公开(公告)日:2023-12-21

    申请号:US18135888

    申请日:2023-04-18

    Inventor: Keiichi MINAMI

    Abstract: The secondary battery system according to the present disclosure includes a secondary battery, a heating device, and a control device, and the secondary battery includes a positive electrode and a negative electrode, and one or both of the positive electrode and the negative electrode include an active material, a solid electrolyte, and a Li containing salt, and the active material includes a material whose volume changes with charging and discharging of the secondary battery, and a target heated by the heating device includes Li containing salt, and the control device controls the heating by the heating device such that when it is determined that the performance of the secondary battery is equal to or lower than a certain level, the temperature of Li containing salt becomes equal to or higher than the melting point of Li containing salt.

    METHOD OF PRODUCING SULFIDE SOLID-STATE ELECTROLYTE

    公开(公告)号:US20240347762A1

    公开(公告)日:2024-10-17

    申请号:US18627445

    申请日:2024-04-05

    CPC classification number: H01M10/0562 H01M2300/0068

    Abstract: A method of producing a sulfide solid-state electrolyte having an LGPS-type crystal phase containing Li, Sn, P and S includes: amorphizing a raw material composition, to obtain an ion-conductive material; heating the ion-conductive material in an inert gas stream, to obtain a sulfide solid-state electrolyte intermediate; pulverizing the sulfide solid-state electrolyte intermediate into a fine particle form, to obtain intermediate fine particles; and heating the intermediate fine particles at a temperature of from 300° C. to 450° C. in an inert gas stream, to obtain a sulfide solid-state electrolyte.

    SULFIDE SOLID ELECTROLYTE PARTICLES AND ALL-SOLID-STATE BATTERY

    公开(公告)号:US20200235422A1

    公开(公告)日:2020-07-23

    申请号:US16743061

    申请日:2020-01-15

    Inventor: Keiichi MINAMI

    Abstract: Provided are sulfide solid electrolyte particles which have sufficient ion conductivity and which are, when used in an all-solid-state battery, configured to suppress a resistance increase rate after charge-discharge cycles, and an all-solid-state battery comprising the sulfide solid electrolyte particles. The sulfide solid electrolyte particles may be sulfide solid electrolyte particles comprising a sulfide solid electrolyte that comprises Li, P, S and a halogen as constituent elements, wherein an oxygen/sulfur element ratio of a particle surface measured by XPS, is 0.79 or more and 1.25 or less, and an oxygen/sulfur element ratio at a depth of 30 nm (in terms of a SiO2 sputter rate) from the particle surface measured by XPS, is 0.58 or less.

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