基本信息:
- 专利标题： 표면 코팅된 다공성 실리콘계 음극 활물질 및 이의 제조방법
- 专利标题（英）：Surface coated porous silicon based anode active material and preparation method thereof
- 专利标题（中）：表面涂层多孔硅基阳极活性材料及其制备方法
- 申请号：KR1020140080089 申请日：2014-06-27
- 公开(公告)号：KR1020160001481A 公开(公告)日：2016-01-06
- 发明人： 이용주 , 이미림 , 유정우 , 김은경
- 申请人： 주식회사 엘지화학
- 申请人地址： ***, Yeoui-daero, Yeongdeungpo-gu, Seoul, Republic of Korea
- 专利权人： 주식회사 엘지화학
- 当前专利权人： 주식회사 엘지화학
- 当前专利权人地址： ***, Yeoui-daero, Yeongdeungpo-gu, Seoul, Republic of Korea
- 代理人： 특허법인태평양
- 主分类号： H01M4/38
- IPC分类号： H01M4/38 ; H01M4/36 ; H01M4/62 ; H01M4/134 ; H01M10/0525
According to one embodiment of the invention, the porous silicon-based particle comprising a plurality of pores; And provides a negative electrode active material characterized in that it comprises a portion spaced between and comprising a carbon coating layer on the surface of the porous silicon-based particles, wherein the carbon coating layer is formed all cover the porous silicon-based particles, wherein the carbon coating layer and the porous silicon-based particles do.
Negative electrode active material according to an embodiment of the present invention, by forming said carbon coating covers the entire porous silicon-based particles, and excellent in electrical conductivity, the charge or discharge reaction can be made uniform. In addition, the volume expansion of the negative electrode active material is sufficient because the suction by the spaced-apart parts, the pores contained in the negative electrode active material, the performance of the secondary battery can be further improved.