发明名称 |
A NEGATIVE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY AND A METHOD FOR PREPARING SAME |
摘要 |
Provided are an anode active material for a lithium secondary battery having high reversible capacity and excellent charge/discharge efficiency, comprising a complex composed of ultra-fine Si phase particles and an oxide surrounding the ultra-fine Si phase particles, and a carbon material; and a method for preparing the same. The present invention also provides a method for preparing an anode active material for a lithium secondary battery comprising producing a complex composed of ultra-fine Si particles and an oxide surrounding the ultra-fine Si particles by mixing a silicon oxide and a material having an absolute value of oxide formation enthalpy (&Dgr;Hfor) greater than that of the silicon oxide and negative oxide formation enthalpy by a mechanochemical process or subjecting them to a thermochemical reaction to reduce the silicon oxide; and mixing the Si phase-containing oxide complex and carbon material. |
申请公布号 |
EP1652248(A4) |
申请公布日期 |
2007.06.06 |
申请号 |
EP20040774231 |
申请日期 |
2004.07.29 |
申请人 |
LG CHEM, LTD.;KANGWON NATIONAL UNIVERSITY INDUSTRY COOPERATION FOUNDATION |
发明人 |
LEE, SUNG-MAN;LEE, HEON YOUNG;HONG, MOON KI |
分类号 |
H01M4/36;B22F1/02;B22F9/20;H01M4/134;H01M4/38;H01M4/62 |
主分类号 |
H01M4/36 |
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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