发明名称 |
HIGH-CAPACITY CATHODE ACTIVE MATERIAL AND LITHIUM SECONDARY BATTERY INCLUDING SAME |
摘要 |
The present invention relates to a cathode active material including a lithium manganese-based oxide. Particularly, the present invention relates to a cathode active material characterized in that the lithium manganese-based oxide has a layered crystalline structure; Mn is higher in content than (an)other transition metal(s); 1 mol or more of Li is included for 1 mol of a lithium-transition metal oxide; there is a flat level characteristic in which oxygen is released together with release of lithium during first charging in a high voltage range of 4.4V or higher; domains exhibiting electrochemical activity due to a structural change in a voltage range of 3.5V or lower after the first charging are included the layered crystalline structure; and a conductive material is included to improve the electrical conductivity of the lithium manganese-based oxide in the voltage range of 3.5V or lower after the first charging. |
申请公布号 |
EP2650952(A4) |
申请公布日期 |
2015.02.18 |
申请号 |
EP20120833835 |
申请日期 |
2012.09.20 |
申请人 |
LG CHEM, LTD. |
发明人 |
OH, SONG TAEK;PARK, JUNG HWAN;KIM, SU HWAN;CHUNG, GEUN CHANG |
分类号 |
H01M4/505;H01M4/04;H01M4/131;H01M4/1391;H01M4/36;H01M4/583;H01M4/587;H01M4/62;H01M10/052 |
主分类号 |
H01M4/505 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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