- Patent Title: Negative electrode composition, negative electrode sheet for all-solid state secondary battery, all-solid state secondary battery, method for manufacturing negative electrode sheet for all-solid state secondary battery, and method for manufacturing all-solid state secondary battery
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Application No.: US17183365Application Date: 2021-02-24
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Publication No.: US12107212B2Publication Date: 2024-10-01
- Inventor: Toshihiko Yawata , Shin Ozawa , Hideyuki Suzuki , Hiroshi Isojima
- Applicant: FUJIFILM Corporation
- Applicant Address: JP Tokyo
- Assignee: FUJIFILM Corporation
- Current Assignee: FUJIFILM Corporation
- Current Assignee Address: JP Tokyo
- Agency: JCIPRNET
- Priority: JP 18184891 2018.09.28
- Main IPC: H01M10/0562
- IPC: H01M10/0562 ; H01M4/02 ; H01M4/136 ; H01M4/1397

Abstract:
Provided are a negative electrode composition including a sulfide-based inorganic solid electrolyte, a negative electrode active material containing a silicon atom or a tin atom, and a polymer, in which the polymer has substantially no adsorption capacity to the negative electrode active material and the sulfide-based inorganic solid electrolyte, a modulus of elasticity of the polymer measured in accordance with JIS K 7161 (2014) is 100 MPa or higher and 1000 MPa or lower, and in a case where a negative electrode active material layer is formed of the negative electrode composition, the polymer is contained in the negative electrode active material layer in a particle form, a negative electrode sheet for an all-solid state secondary battery, an all-solid state secondary battery, a method for manufacturing a negative electrode sheet for an all-solid state secondary battery, and a method for manufacturing an all-solid state secondary battery.
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