基本信息:
- 专利标题： 리튬 이차 전지용 양극 활물질, 이를 포함하는 양극 합재, 양극 및 리튬 이차 전지
- 专利标题（英）：CATHODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY, AND CATHODE COMPOSITE MATERIAL, CATHODE, AND LITHIUM SECONDARY BATTERY COMPRISING SAME
- 申请号：PCT/KR2022/008161 申请日：2022-06-09
- 公开(公告)号：WO2022265296A1 公开(公告)日：2022-12-22
- 发明人： 한기범 , 김종우 , 노은솔 , 박강준 , 곽민 , 김슬기 , 김형일 , 박상민 , 이상욱 , 정왕모
- 申请人： 주식회사 엘지에너지솔루션
- 申请人地址： 07335 서울특별시 영등포구 여의대로 108, 타워1, Seoul
- 专利权人： 주식회사 엘지에너지솔루션
- 当前专利权人： 주식회사 엘지에너지솔루션
- 当前专利权人地址： 07335 서울특별시 영등포구 여의대로 108, 타워1, Seoul
- 代理机构： 특허법인 필앤온지
- 优先权： KR10-2021-0079001 2021-06-17
- 主分类号： H01M4/36
- IPC分类号： H01M4/36 ; H01M4/525 ; H01M4/505 ; H01M4/131 ; H01M10/052
Disclosed in the present invention is a cathode active material for a lithium secondary battery in which small particles having a predetermined average particle diameter (D50) and large particles having a larger average particle diameter (D50) than the small particles are mixed, wherein the small particles are at least one selected from the group consisting of particles having a carbon material coating layer formed on a part or all of the surface of large primary particles having an average particle diameter (D50) of 1 μm or greater, particles having a carbon material coating layer formed on a part or all of the surface of secondary particles formed by agglomeration of the large primary particles, and a mixture thereof, and wherein the large particles have an average particle diameter (D50) of 5 μm to 20 μm, and are secondary particles formed by aggregation of fine primary particles having an average particle diameter (D50) smaller than the large primary particles, wherein the large primary particles and the fine primary particles are nickel-based lithium transition metal oxides.
IPC结构图谱:
| H | 电学 |
| --H01 | 基本电气元件 |
| ----H01M | 用于直接转变化学能为电能的方法或装置，例如电池组 |
| ------H01M4/00 | 电极 |
| --------H01M4/02 | .由活性材料组成或包括活性材料的电极 |
| ----------H01M4/36 | ..作为活性物质、活性体、活性液体的材料的选择 |