公开(公告)号：US20210119246A1

公开(公告)日：2021-04-22

申请号：US16479698

申请日：2018-01-23

Applicant: Hitachi Zosen Corporation

Inventor： Hirokazu KAWASE ,  Risa NAGAI

IPC: H01M10/0562 ,  H01M10/0525 ,  H01M4/36 ,  H01M4/04 ,  H01M4/136

Abstract: In a production method of an electrode for all-solid-state batteries, the electrode having an electrode mixture layer containing active material particles and solid electrolyte particles, the solid electrolyte particles include a first group of particles having an average particle diameter d1, and a second group of particles having an average particle diameter d2. The production method includes: a first mixing step of dry-mixing the active material particles and the first group of particles, to obtain a mixture A; a second mixing step of dry-mixing the mixture A and the second group of particles, to obtain a mixture B; and a pressing step of pressing the mixture B to form the electrode mixture layer. A ratio of the average particle diameter d2 to the average particle diameter d1: d2/d1 satisfies d2/d1≥1.5.

公开(公告)号：US20210135276A1

公开(公告)日：2021-05-06

申请号：US16628452

申请日：2018-07-05

Applicant: HITACHI ZOSEN CORPORATION

Inventor： Takeshi SUGIYO ,  Hirokazu KAWASE

IPC: H01M10/0562 ,  H01M10/04 ,  H01M10/0585 ,  H01M50/109

Abstract: A coin-shaped battery includes: at least one laminated body which includes a positive electrode layer, a solid-electrolyte layer, and a negative electrode layer, the positive electrode layer, the solid-electrolyte layer, and the negative electrode layer being stacked; and an outer casing which is composed of a metal case and a metal sealing plate and in which the at least one laminated body is enclosed. The at least one laminated body is compressed by pressurization, and the solid-electrolyte layer in the at least one laminated body has an average thickness of not less than 5 μm and not more than 100 μm.

公开(公告)号：US20190051935A1

公开(公告)日：2019-02-14

申请号：US16080557

申请日：2017-02-24

Applicant: HITACHI ZOSEN CORPORATION

Inventor： Kenji OKAMOTO ,  Hideyuki FUKUI ,  Yasushi TAKANO ,  Hirokazu KAWASE

IPC: H01M10/0562 ,  H01M10/0525 ,  H01M10/058 ,  H01M4/36 ,  H01M4/70

Abstract: A method for manufacturing an all-solid state secondary battery including a plurality of provisional battery bodies, the method including: forming each of the plurality of provisional battery bodies by pressing a positive-electrode mixture, a solid electrolyte, and a negative-electrode mixture that are stacked between a pair of electrode current collectors and pressure-molding the stacked provisional battery bodies with the electrode current collectors facing each other. The electrode current collectors facing each other have rough surfaces.