| 发明名称 |
CATHODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY AND MANUFACTURING METHOD OF THE SAME |
| 摘要 |
PURPOSE: A positive active material for a lithium secondary battery is provided to improve the lifetime of a lithium secondary battery by suppressing the elution of manganese at high temperatures. CONSTITUTION: A positive active material includes a lithium-boron-based oxide glass coated on the surface of lithium-nickel-manganese oxide. The lithium-nickel-manganese oxide is LiNi_xMn_(2-x)O_4 in a spinel crystal structure, in which 0<x<=0.5. The lithium-boron-based oxide glass consists of amorphous LiO2-B2O3 oxide. The amount of the lithium-boron-based oxide glass coated on the surface of the lithium-nickel-manganese is 0.01-1.5 parts by weight based on 100.0 parts by weight of the lithium-nickel-manganese oxide. [Reference numerals] (AA) Discharging capacity/ mAhg^-1; (BB) Number of charging and discharging |
| 申请公布号 |
KR20130108717(A) |
申请公布日期 |
2013.10.07 |
| 申请号 |
KR20120030351 |
申请日期 |
2012.03.26 |
| 申请人 |
KOREA INSTITUTE OF CERAMIC ENGINEERING AND TECHNOLOGY |
发明人 |
ROH, KWANG CHUL;PARK, SUN MIN;PARK, JUN SOO |
| 分类号 |
H01M4/525;H01M4/1391;H01M4/505;H01M10/052 |
主分类号 |
H01M4/525 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
|
| 地址 |
|
