| 发明名称 |
NEGATIVE ACTIVE MATERIAL, NEGATIVE ELECTRODE AND LITHIUM BATTERY INCLUDING THE NEGATIVE ACTIVE MATERIAL, AND METHOD OF PREPARING THE NEGATIVE ACTIVE MATERIAL |
| 摘要 |
A negative active material, a lithium battery including the negative active material, and a method of preparing the negative active material. The negative active material includes a silicon-based alloy including Si, Al, and Fe. The silicon-based alloy includes an active phase of silicon nanoparticles and an inactive phase of Si3Al3Fe2 and Si2Fe in a ratios suitable to improve the lifespan of the lithium battery. |
| 申请公布号 |
US2015021516(A1) |
申请公布日期 |
2015.01.22 |
| 申请号 |
US201414331214 |
申请日期 |
2014.07.14 |
| 申请人 |
SAMSUNG SDI CO., LTD. |
发明人 |
Kwon Seung-Uk;Kim Young-Ugk;Kim Jae-Hyuk;Matulevich Yury;Park Yo-Han;Jeong Chang-Ui;Suh Soon-Sung;Chu Hee-Young;Yoon Duk-Hyoung |
| 分类号 |
H01M4/38;H01M4/36;C22C28/00;B22D11/00;B22D11/12;H01M4/04;H01M10/0525;C22C1/02 |
主分类号 |
H01M4/38 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A negative active material comprising a silicon-based alloy comprising silicon nanoparticles dispersed in an alloy matrix, the alloy matrix comprising Si3Al3Fe2 and Si2Fe, wherein the ratio of the sum of the atomic fractions of Si, Al, and Fe as Si3Al3Fe2 to the sum of the atomic fractions of Si and Fe as Si2Fe is about 2 to about 12. |
| 地址 |
Yongin-si KR |
