发明名称 |
Negative active material, method of preparing the same, and lithium battery including the same |
摘要 |
Provided are a negative active material, a method of preparing the same, and a lithium battery including the negative active material. The negative active material includes a carbonaceous core that has a sulfur content of about 10 ppm to 900 ppm; and an amorphous carbon layer continuously formed on a surface of the carbonaceous core, wherein the carbonaceous core has a crystalloid plate structure, and a crystallite size measured from a full width at half maximum of the peak with respect to the surface (002) of about 10 nm to about 45 nm in an X-ray diffraction spectrum of the carbonaceous core. The lithium battery including a negative electrode including the negative active material has improved capacity characteristics and ring lifetime characteristics. |
申请公布号 |
US9029016(B2) |
申请公布日期 |
2015.05.12 |
申请号 |
US201213427102 |
申请日期 |
2012.03.22 |
申请人 |
Samsung SDI Co., Ltd. |
发明人 |
Lee So-Ra;Shin Chang-Su;Do Ui-Song;Kim Beom-Kwon;Kim Jae-Myung |
分类号 |
H01M4/583;H01M4/38;B05D3/02;H01M4/04;B82Y30/00;H01M4/587;H01M10/0525;C01B31/02;H01M4/36 |
主分类号 |
H01M4/583 |
代理机构 |
Knobbe Martens Olson & Bear LLP |
代理人 |
Knobbe Martens Olson & Bear LLP |
主权项 |
1. A negative active material comprising:
a carbonaceous core comprising a sulfur content of from about 10 ppm to 900 ppm; and an amorphous carbon layer continuously formed on a surface of the carbonaceous core, wherein the carbonaceous core has a crystalloid plate structure, and a crystallite size measured from a full width at half maximum of the peak with respect to the surface (002) of from about 10 nm to about 45 nm in an X-ray diffraction spectrum of the carbonaceous core. |
地址 |
Yongin-si, Gyeonggi-do KR |