Title:
正極材料、その製造方法及びリチウムイオン電池
Document Type and Number:
Japanese Patent JP7416956
Kind Code:
B2
Abstract:
The present disclosure provides a cathode material, a method for preparing the cathode material and a lithium ion battery. The method comprises: performing a first sintering treatment on a lithium source material and a cathode precursor material to obtain a first sintered product; and coating a surface of the first sintered product with a coating agent and then performing a second sintering treatment to obtain the cathode material, wherein the coating agent is a nickel source material and/or a manganese source material. A monocrystal-like cathode material is synthesized by selecting the specific coating agent and combining with a secondary sintering process (i.e., first sintering, first coating and second sintering). The monocrystal-like cathode material is formed by primary particle aggregation of a plurality of morphologically similar monocrystal cathode materials. Adoption of the method can reduce side reactions in an electrolyte and particles, improve the cyclic retention ratio and prolong the service of the battery without losing the circulation capacity while simplifying a synthetic process, reducing the energy consumption, improving the yield, canceling a water washing process and reducing residual lithium.
Inventors:
white luster
Zhang Shutao
Ban Haeryong
majestic
Zhang Shutao
Ban Haeryong
majestic
Application Number:
JP2022538278A
Publication Date:
January 17, 2024
Filing Date:
October 28, 2020
Export Citation:
Assignee:
SVOLT ENERGY TECHNOLOGY COMPANY LIMITED
International Classes:
H01M4/525; H01M4/36; H01M4/505
Domestic Patent References:
| JP9055210A | ||||
| JP8138670A | ||||
| JP8171935A | ||||
| JP2009137834A | ||||
| JP2010114088A | ||||
| JP2019091692A |
Foreign References:
| CN105958062A | ||||
| CN110061225A | ||||
| CN105070908A | ||||
| CN103633308A | ||||
| CN103825016A | ||||
| CN109686931A | ||||
| CN110676452A | ||||
| CN110336020A | ||||
| CN108075115A |
Attorney, Agent or Firm:
Hiroki Shirai