Negativelektroden-Aktivmaterialschicht und Festkörpersekundärbatterie

Details

Veröffentlichungs-Nr.

EP4443542

Aktenzeichen

EP24158890

Anmeldetag

21. Februar 2024

Veröffentlichung

30. Oktober 2024

Rechtsraum

EP

IPC

H01M4/134H01M4/36H01M4/38H01M4/62H01M10/0562// H01M10/052H01M4/02

Abstract

An object of the present disclosure is to provide a negative electrode active material layer, in which electrical conductivity of silicon active material particles is improved by decreasing the amount of oxygen atoms in the silicon active material particles while electrical resistance is less likely to deteriorate even when charging capacity of a battery is low, and a solid-state secondary battery comprising such a negative electrode active material layer. The negative electrode active material layer of the present disclosure contains silicon active material particles and solid electrolyte particles, wherein an amount of oxygen atoms in the silicon active material particles is less than 5.0% by mass, and an average particle size of the solid electrolyte particles is 1.0 µm or less and/or a ratio of an average particle size of the solid electrolyte particles relative to an average particle size of the silicon active material particles is 0.9 or less.

Anmelder

Firma

TOYOTA JIDOSHA KABUSHIKI KAISHA

Land

🇯🇵 Japan

Fachgebiete