发明名称 |
CATHODE ACTIVE MATERIAL, METHOD FOR PREPARING THE SAME, AND LITHIUM SECONDARY BATTERIES COMPRISING THE SAME |
摘要 |
The present invention relates to a positive electrode active material for a lithium secondary battery, a method for producing same, and a lithium secondary battery including same. The method for producing a positive electrode active material herein includes a producing step for producing a complex oxide having a layer structure with excess lithium manganese that is represented by the chemical formula of Li[Lix-z(NiaCobMnc)1-x]O2 ? (herein, a+b+c=1, 0.05£x£0.33, 0<z£0.05) or by the chemical formula of Li[Lix-z(NiaCobMnc)1-x]O2-yFy (herein, a+b+c=1, 0.05£x£0.33, 0£y£0.08, 0<z£0.05); a mixing step for forming a mixture by adding ? metallic salt, ammonium fluoride, and the complex oxide to an organic solvent with a moisture content of equal to or less than 10%; and a heat treatment step for coating a surface of the complex oxide with metalloid fluoride by performing a heat treatment on the mixture under an inert atmosphere. |
申请公布号 |
KR20140058799(A) |
申请公布日期 |
2014.05.15 |
申请号 |
KR20120124970 |
申请日期 |
2012.11.06 |
申请人 |
SAMSUNG FINE CHEMICALS CO., LTD. |
发明人 |
JO, SUNG NIM;KIM, JI YOON;LEE, HA YEON;SHIM, HYUNG CHEOUL |
分类号 |
H01M4/505;H01M4/1391;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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