Verfahren zur Herstellung eines Festelektrolyten und Verfahren zur Herstellung einer Sekundärbatterie

Details

Veröffentlichungs-Nr.

EP4790730

Anmeldetag

11. September 2025

Veröffentlichung

9. April 2026

Rechtsraum

EP

Abstract

A manufacturing method of a solid electrolyte of a pyrochlore-type that includes a plurality of cations including a metal cation, a halogen element, and a defect structure, includes a mixing process (S16) that includes preparing a mixed raw material by mixing a precursor of the solid electrolyte or raw materials for the precursor with a halogen-containing raw material containing the halogen element, and a firing process (S17) that includes firing the mixed raw material. The firing process includes volatilizing the halogen element from the solid electrolyte at a halogen volatilization rate Vout and supplying the halogen element to a firing atmosphere of the solid electrolyte at a halogen supply rate Vin. The firing process includes firing the mixed raw material under an atmosphere in which a relationship of Vin/(Vout × Dp) ≥ 0.015 is satisfied, where Dp is a median particle diameter of the solid electrolyte.

Anmelder

Firma

DENSO CORPORATION

Land

🇯🇵 Japan