Title:
被膜付き正極活物質粒子の製造方法
Document Type and Number:
Japanese Patent JP7137602
Kind Code:
B2
Abstract:
To provide a manufacturing method of a positive electrode active material particle with a film which can achieve both low battery resistance and high battery durability (capacity retention rate).SOLUTION: A manufacturing method of a positive electrode active material particle 1 with a film, including a positive electrode active material particle 10, an amorphous LPO film 20, and a crystalline LPO film 30 includes an amorphous film forming step S1 of obtaining a positive electrode active material particle 1Z with an intermediate film by mixing the positive electrode active material particle 10 having at least one of LiOH and Li2O on a part of the particle surface 10m and a treatment liquid 100 containing P and forming the amorphous LPO film 20, and a crystalline film forming step S2 of forming the crystalline LPO film 30 by dry-mixing the positive electrode active material particles 1Z with the intermediate film and crystalline LPO particle 150 containing Li, P, and O.SELECTED DRAWING: Figure 3
Inventors:
Ueda Masashi
Yuki Ishigaki
Eiichi Takagi
Masanori Kitayoshi
Yuki Ishigaki
Eiichi Takagi
Masanori Kitayoshi
Application Number:
JP2020157612A
Publication Date:
September 14, 2022
Filing Date:
September 18, 2020
Export Citation:
Assignee:
Prime Planet Energy & Solutions Co., Ltd.
International Classes:
H01M4/525; C01B25/30; C01G53/00; H01M4/36; H01M4/505
Domestic Patent References:
| JP2020113377A | ||||
| JP2019153462A | ||||
| JP2012182071A | ||||
| JP2018098161A |
Foreign References:
| WO2019078688A2 |
Attorney, Agent or Firm:
Patent Attorney Corporation Cosmos International Patent and Trademark Office