发明名称 |
Material ativo de anodo para uma bateria secundária de lítio e método para preparar o material ativo de anodo para uma bateria secundária de lítio. |
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 |
BRPI0413050(B1) |
申请公布日期 |
2015.08.11 |
申请号 |
BR2004PI13050 |
申请日期 |
2004.07.29 |
申请人 |
KANGWON NATIONAL UNIVERSITY INDUSTRY COOPERATION FOUNDATION;LG CHEM, LTD. |
发明人 |
SUNG-MAN LEE;HEON YOUNG LEE;MOON KI HONG |
分类号 |
H01M4/36;H01M4/134;H01M4/38;H01M4/62 |
主分类号 |
H01M4/36 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|