Sekundärbatterie mit Wasserfreiem Elektrolyt

Details

Veröffentlichungs-Nr.

EP3998655

Aktenzeichen

EP21200754

Anmeldetag

4. Oktober 2021

Veröffentlichung

26. November 2025

Erteilung

26. November 2025

Rechtsraum

EP

IPC

H01M4/04H01M4/13H01M10/0525H01M10/058H01M4/139// H01M4/133H01M4/1393H01M4/02

Abstract

A non-aqueous electrolyte secondary battery comprises a positive electrode, a negative electrode, a separator, and an electrolyte solution. At least part of the separator is interposed between the positive electrode and the negative electrode. The negative electrode includes a negative electrode substrate and a negative electrode active material layer. The negative electrode active material layer is placed on a surface of the negative electrode substrate. Voids are formed in the negative electrode active material layer. In a cross section parallel to a thickness direction of the negative electrode active material layer, the voids have an average equivalent circle diameter from 9.6 µm to 35.8 µm, an average circularity of 0.26 or more, and an area percentage from 3.1% to 30.9%.

Anmelder

Firma

Prime Planet Energy & Solutions, Inc.

Land

🇯🇵 Japan

Fachgebiete