| 发明名称 | Positive active material for secondary battery of improved rate capability | ||
| 摘要 | Disclosed is a novel cathode active material for secondary batteries. More specifically, disclosed is a cathode active material for secondary batteries that reduces deintercalation of oxygen from a crystal structure of Li2MnO3 at a high voltage of 4.3V to 4.6V through incorporation of excess lithium in a transition metal cation layer. | ||
| 申请公布号 | US8852806(B2) | 申请公布日期 | 2014.10.07 |
| 申请号 | US201313855422 | 申请日期 | 2013.04.02 |
| 申请人 | LG Chem, Ltd. | 发明人 | Chang Sung-Kyun;Park ByungChun;Oh Song Taek;Kim SungJin |
| 分类号 | H01M4/505;H01M4/525;H01M4/58;H01M4/64;B60K1/00;B05D5/12;H01M4/485;H01M10/0525 | 主分类号 | H01M4/505 |
| 代理机构 | Birch, Stewart, Kolasch & Birch, LLP | 代理人 | Birch, Stewart, Kolasch & Birch, LLP |
| 主权项 | 1. A cathode active material for secondary batteries for reducing deintercalation of oxygen from a crystal structure at a high voltage of 4.3V to 4.6V through incorporation of excessive lithium in a cation layer composed of Ni and in a cation layer composed of Mn, the cathode active material being represented by Formula 1: (1−x)Li(LiaM′bM1−a−b)O2*xLi2M″O3 (1) wherein 0<x<0.3; 0<a<0.2; 0≦b≦0.2; M is at least one element selected from Ni and Mn; M′ is a transition metal excluding Ni and Mn; and M″ is at least one element selected from Mn, Sn and Ti,wherein the compound of Formula 1 is a composite or solid solution with a layered structure. | ||
| 地址 | Seoul KR | ||