Title:
METHOD FOR MANUFACTURING POSITIVE ELECTRODE MATERIAL FOR LITHIUM SECONDARY BATTERY, AND POSITIVE ELECTRODE MATERIAL FOR LITHIUM SECONDARY BATTERY MANUFACTURED BY SAME
Document Type and Number:
WIPO Patent Application WO/2020/055198
Kind Code:
A1
Abstract:
The present invention relates to a method for manufacturing a positive electrode material, a positive electrode material manufactured by the method, and a positive electrode for a lithium secondary battery, comprising the positive electrode material, and a lithium secondary battery, the method comprising the steps of: obtaining a first pre-sintered product by mixing a lithium-containing raw material and a first positive electrode active material precursor having an average particle size (D50) of 10 ㎛ to 30 ㎛, and pre-sintering same; obtaining a second pre-sintered product by mixing the lithium-containing raw material and a second positive electrode active material precursor having a different average particle size (D50) from that of the first positive electrode active material precursor, and pre-sintering same; disintegrating the first pre-sintered product and the second pre-sintered product; and acquiring a positive electrode material by mixing the disintegrated first pre-sintered product and the disintegrated second pre-sintered product, and sintering same.
Inventors:
CHOI SANG SOON (KR)
CHAE HWA SEOK (KR)
KIM JAE GEUN (KR)
KANG SEONG HOON (KR)
CHAE HWA SEOK (KR)
KIM JAE GEUN (KR)
KANG SEONG HOON (KR)
Application Number:
PCT/KR2019/011886
Publication Date:
March 19, 2020
Filing Date:
September 11, 2019
Export Citation:
Assignee:
LG CHEMICAL LTD (KR)
International Classes:
C01G53/00; H01M4/36; H01M4/505; H01M4/525; H01M10/052
Foreign References:
| KR20180066623A | 2018-06-19 | |||
| KR20180064295A | 2018-06-14 | |||
| KR20180059753A | 2018-06-05 | |||
| JP2018070419A | 2018-05-10 | |||
| KR101840541B1 | 2018-03-20 |
Other References:
See also references of EP 3795541A4
Attorney, Agent or Firm:
BAE, KIM & LEE IP GROUP (KR)
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