Positivelektrode, Verfahren zur deren Herstellung und Elektrochemische Vorrichtung

Details

Veröffentlichungs-Nr.

EP3506397

Aktenzeichen

EP18204687

Anmeldetag

6. November 2018

Veröffentlichung

6. März 2024

Erteilung

6. März 2024

Rechtsraum

EP

IPC

H01M4/04H01M4/131H01M4/1391H01M4/136H01M4/1397H01M4/48H01M4/58H01M4/525H01M4/505// H01M10/052H01M4/02

Abstract

The present disclosure relates to the technical field of energy storage, and in particular, relates to a positive electrode, a method for preparing the positive electrode and an electrochemical device. The positive electrode includes a current collector and a positive electrode active material layer that contains positive electrode active material and is arranged on at least one surface of the current collector. An inorganic layer having a thickness of 20 nm to 2000 nm is arranged on the surface of the at least one positive electrode active material layer away from the current collector. The inorganic layer is a porous dielectric layer containing no binder, and the inorganic layer has a porosity of 10%∼60%. The positive electrode active material layer according to the present disclosure significantly improves the cycle performance, high-temperature storage performance and safety of the electrochemical device.

Anmelder

Firmen

Contemporary Amperex Technology (Hong Kong) Limited
Contemporary Amperex Technology Co., Limited

Land

🇭🇰 Hongkong

Fachgebiete