Title:
METHOD FOR MANUFACTURING LITHIUM SECONDARY BATTERY, AND LITHIUM SECONDARY BATTERY MANUFACTURED THEREBY
Document Type and Number:
WIPO Patent Application WO/2022/114538
Kind Code:
A1
Abstract:
The present invention relates to a method for manufacturing a lithium secondary battery, the method comprising the following steps of: (1) manufacturing a first positive electrode active material by mixing a small particle lithium composite transition metal oxide having an average particle diameter (D50) of less than 7 μm with a boron-containing raw material, and heat-treating the mixture; (2) manufacturing a second positive electrode active material by mixing a large particle lithium composite transition metal oxide having an average particle diameter (D50) of 8 μm or more with a cobalt-containing raw material and a boron-containing raw material, and heat-treating the mixture; (3) manufacturing a positive electrode material having bimodal particle size distribution by mixing the first positive electrode active material and the second positive electrode active material; (4) manufacturing a positive electrode by coating the positive electrode material on a positive electrode current collector; and (5) assembling the positive electrode, a negative electrode including a silicon-based negative active material, and a separator.
Inventors:
BAEK SO RA (KR)
KIM HAK YOON (KR)
HUR HYUCK (KR)
KIM DONG HWI (KR)
KIM HYEONG IL (KR)
CHAE SEUL KI (KR)
JUNG WANG MO (KR)
LEE DONG HUN (KR)
KIM HAK YOON (KR)
HUR HYUCK (KR)
KIM DONG HWI (KR)
KIM HYEONG IL (KR)
CHAE SEUL KI (KR)
JUNG WANG MO (KR)
LEE DONG HUN (KR)
Application Number:
PCT/KR2021/014956
Publication Date:
June 02, 2022
Filing Date:
October 22, 2021
Export Citation:
Assignee:
LG ENERGY SOLUTION LTD (KR)
International Classes:
H01M4/1391; H01M4/36; H01M4/38; H01M4/48; H01M4/505; H01M4/525; H01M4/62; H01M10/052
Foreign References:
| KR20160075196A | 2016-06-29 | |||
| KR20190041420A | 2019-04-22 | |||
| KR20110063335A | 2011-06-10 | |||
| KR20060091486A | 2006-08-21 | |||
| CN110459736A | 2019-11-15 | |||
| KR20200162322A | 2020-11-27 |
Attorney, Agent or Firm:
BAE, KIM & LEE IP (KR)
Download PDF: