发明名称 |
SURFACE-COATED CATHODE ACTIVE MATERIAL, METHOD FOR PREPARING SAME, AND LITHIUM SECONDARY BATTERY INCLUDING SAME |
摘要 |
The present invention provides a surface-coated cathode active material and a method for preparing the same, the surface-coated cathode active material comprising: a cathode active material; and a nanofilm coated on a surface of the cathode active material, wherein the nanofilm includes polyimide (PI) and a fibrous carbon material. According to one embodiment of the present invention, when a surface of a cathode active material is coated with a nanofilm including polyimide and a fibrous carbon material, a direct contact with an electrolyte of the cathode active material is prevented so as to suppress a side reaction between the cathode active material and the electrolyte, such that the life of a secondary battery is capable of being remarkably improved. Particularly, it is possible to improve life and conductivity under high-temperature and high-voltage conditions. |
申请公布号 |
WO2015115815(A1) |
申请公布日期 |
2015.08.06 |
申请号 |
WO2015KR00936 |
申请日期 |
2015.01.28 |
申请人 |
LG CHEM, LTD.;UNIST ACADEMY-INDUSTRY RESEARCH CORPORATION |
发明人 |
JANG, WOOK;LEE, SANG YOUNG;CHO, SEUNG BEOM;PARK, JANG HOON;KIM, JU MYUNG |
分类号 |
H01M4/62;H01M4/13;H01M4/505;H01M4/525;H01M10/052 |
主分类号 |
H01M4/62 |
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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