Kathodenschicht, Lithium-Ionen-Batterie und Verfahren zur Herstellung der Kathodenschicht

Details

Veröffentlichungs-Nr.

EP4794009

Anmeldetag

6. Februar 2026

Veröffentlichung

19. August 2026

Rechtsraum

EP

Abstract

A main object of the present disclosure is to provide a cathode layer for a lithium ion battery, with which the resistance increase of a battery due to charge and discharge can be suppressed. The present disclosure achieves the object by providing a cathode layer to be used in a lithium ion battery, the cathode layer including: single crystalline active material configured by a crystalline primary particle containing Li, TM, which is a transition metal, and O as a cathode active material, wherein in a cross-section observation image of the cathode layer by a scanning electron microscope, the single crystalline active material includes a long side and a short side, an angle formed by the long side and the short side is 60° or more and 120° or less, and an aspect ratio which is a ratio of length of the long side to the short side is 1.2 or more, the long side of the single crystalline active material extends along (003) surface, and a ratio N<B>/N<A> of a number N<B> of the single crystalline active material of which inclination of the long side direction to in-plane direction of the cathode layer is 0° or more and 30° or less, with respect to a number N<A> of the single crystalline active material is 50% or more.

Anmelder

Firma

Toyota Jidosha Kabushiki Kaisha

Land

🇯🇵 Japan