Batterie

Details

Veröffentlichungs-Nr.

EP4787495

Anmeldetag

20. Januar 2026

Veröffentlichung

5. August 2026

Rechtsraum

EP

Abstract

Disclosed is a technique capable of suppressing delamination between the positive electrode current collector and the positive electrode active material layer in a battery using a sulfur-based positive electrode active material, even when the volume of the sulfur-based positive electrode active material changes due to charging and discharging. The battery of the present disclosure comprises a positive electrode current collector, a positive electrode active material layer, an electrolyte layer, and a negative electrode. The positive electrode active material layer comprises a sulfur-based active material. The positive electrode current collector has a contact surface in contact with the positive electrode active material layer. Arithmetic mean roughness of the contact surface is 0.25 µm or more.

Anmelder

Firma

Toyota Jidosha Kabushiki Kaisha

Land

🇯🇵 Japan