Lithium cobalt metal oxide powder, method for making the same, and method for determining content of cobalt (II,III) oxide

US11784309B2 · kind B2 · utility

Assignee

• BASF SHANSHAN BATTERY MATERIALS CO., LTD. · CN

Inventors

• Yongchang LI · Changsha, CN
• Hong Dong · Diamond Bar, US
• Xuyao HU · Hunan, CN
• Hui Shi · Nanchang, CN
• Shuang Chen · Gurnee, US
• Xiangkang JIANG · Changsha, CN
• Xu Li · 林湖乡, CN
• Zhihua Li · Changsha, CN

Key dates

• Filing date: Apr 26, 2018
• Grant date: Oct 10, 2023
• Expiry date: Oct 15, 2039

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02E60/10
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A lithium cobalt metal oxide powder is disclosed in the present disclosure. The lithium cobalt metal oxide powder has a coating structure. The lithium cobalt metal oxide powder includes a lithium cobalt metal oxide matrix. The lithium cobalt metal oxide powder further includes a Co3O4 coating layer. A general formula of the lithium cobalt metal oxide powder is LiaCo1-x-yMxNyO2·rCo3O4, wherein 0.002<r≤0.05, 1≤a≤1.1, 0<x≤0.02, 0≤y≤0.005, and a<1+3r; M is a doping element; and N is a coating element. A method for making the lithium cobalt metal oxide powder as described above and a method for determining a content of Co3O4 therein are further provided. The material made in the present disclosure has an excellent electrochemical performance.