| 发明名称 |
POSITIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY |
| 摘要 |
The inventive concepts relate to a positive electrode active material for lithium secondary battery, and more particularly, relate to a positive electrode active material which includes a first concentration gradient portion, a second concentration gradient portion, and a first concentration maintained portion. The first and second concentration gradient portions have gradients of concentrations of nickel, manganese, and cobalt in the direction from the center to the surface, and the first concentration maintained portion has constant concentrations of nickel, manganese, and cobalt between the first concentration gradient portion and the second concentration gradient portion. |
| 申请公布号 |
US2016049649(A1) |
申请公布日期 |
2016.02.18 |
| 申请号 |
US201514926821 |
申请日期 |
2015.10.29 |
| 申请人 |
IUCF-HYU (INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY) |
发明人 |
NOH Hyung-Joo;SUN Yang-Kook;YOUN Sung-June |
| 分类号 |
H01M4/36;H01M4/38;H01M4/505;H01M4/525;H01M4/134;H01M4/131 |
主分类号 |
H01M4/36 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A positive electrode active material for lithium secondary battery, the positive electrode active material comprising:
a first concentration gradient portion having gradients of concentrations of nickel, manganese, and cobalt in a direction from a center to a surface; a first concentration maintained portion that is formed on the outside of the first concentration gradient portion and has concentrations of nickel, manganese, and cobalt which are maintained at a terminal of the first concentration gradient portion; and a second concentration gradient portion that is formed on the outside of the first concentration maintained portion and has gradients of concentrations of nickel, manganese, and cobalt in the direction from the center to the surface. |
| 地址 |
Seoul KR |
