The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 02, 2024
Filed:
Dec. 23, 2020
Contemporary Amperex Technology Co., Limited, Ningde, CN;
Rui Du, Ningde, CN;
Na Liu, Ningde, CN;
Yongchao Liu, Ningde, CN;
Sihui Wang, Ningde, CN;
Deyu Zhao, Ningde, CN;
Xue Leng, Ningde, CN;
CONTEMPORARY AMPEREX TECHNOLOGY CO., LTD., Ningde, CN;
Abstract
This application provides a positive active material, a positive electrode plate, an electrochemical energy storage apparatus, and an apparatus. The positive active material is LiNiCoMMeOAor LiNiCoMMeOAwhose surface is provided with a coating layer. The positive active material is secondary particles, and a particle size D10 of the positive active material satisfies: 0.5 μm≤D10≤3 μm. In this application, particle morphology of the positive active material and the amount of micro powder in the positive active material are properly controlled, to effectively reduce side reactions between the positive active material and an electrolyte, decrease gas production of the electrochemical energy storage apparatus, and improve storage performance of the electrochemical energy storage apparatus without deteriorating energy density, cycle performance and rate performance of the electrochemical energy storage apparatus.