Title:
正極活性材料、正極シート、電気化学エネルギー貯蔵装置及び装置
Document Type and Number:
Japanese Patent JP7165271
Kind Code:
B2
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 LixNiyCozMkMepOrAm, or LixNiyCozMkMepOrAm with a coating layer on its surface; and the positive active material is single crystal or quasi-single crystal particles, and a particle size Dn10 of the positive active material satisfies: 0.3µm≤Dn10≤2µm. In this application, particle morphology of the positive active material and an 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 solution, decrease gas production of the electrochemical energy storage apparatus, and improve storage performance of the electrochemical energy storage apparatus without deteriorating an energy density, cycle performance, and rate performance of the electrochemical energy storage apparatus.
Inventors:
杜▲鋭▼
▲劉▼勇超
Sinking Toru
Wang Ji
Yanagi
▲劉▼勇超
Sinking Toru
Wang Ji
Yanagi
Application Number:
JP2021538110A
Publication Date:
November 02, 2022
Filing Date:
December 27, 2019
Export Citation:
Assignee:
Contemporary Amperex Technology Co., Limited
International Classes:
H01M4/525; C01G53/00; H01M4/505
Domestic Patent References:
| JP2003109592A | ||||
| JP2018172255A |
Attorney, Agent or Firm:
Seiji Matsumoto
Hideki Otake
Hideki Otake
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