基本信息:
- 专利标题： 리튬 이차전지용 양극재의 제조 방법 및 이에 의해 제조된 리튬 이차전지용 양극재
- 专利标题（英）：METHOD FOR MANUFACTURING POSITIVE ELECTRODE MATERIAL FOR LITHIUM SECONDARY BATTERY, AND POSITIVE ELECTRODE MATERIAL FOR LITHIUM SECONDARY BATTERY MANUFACTURED BY SAME
- 申请号：PCT/KR2019/011886 申请日：2019-09-11
- 公开(公告)号：WO2020055198A1 公开(公告)日：2020-03-19
- 发明人： 최상순 , 채화석 , 김재근 , 강성훈
- 申请人： 주식회사 엘지화학
- 申请人地址： 07336 서울시 영등포구 여의대로 128, Seoul KR
- 专利权人： 주식회사 엘지화학
- 当前专利权人： 주식회사 엘지화학
- 当前专利权人地址： 07336 서울시 영등포구 여의대로 128, Seoul KR
- 代理机构： 특허법인 태평양
- 优先权： KR10-2018-0110158 20180914
- 主分类号： C01G53/00
- IPC分类号： C01G53/00 ; H01M4/36 ; H01M4/525 ; H01M4/505 ; H01M10/052
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.