发明名称 |
NEGATIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY, PREPARATION METHOD OF THE SAME, AND LITHIUM SECONDARY BATTERY CONTAINING THE SAME |
摘要 |
<p>The present invention relates to a negative electrode active material for a lithium secondary battery, a preparation method thereof, and a lithium secondary battery containing the negative electrode active material. The negative electrode active material for the lithium secondary battery according to the present invention is formed by mixing: a carbon material coated with vapor growth carbon fiber (VGCF) and amorphous graphite; and one or more kinds of other carbon material selected from natural graphite, artificial graphite, amorphous-coated graphite, resin-coated graphite and amorphous carbon. According to the present invention, when the negative electrode active material is prepared, the carbon fiber is uniformly dispersed-throughout the carbon material, and the carbon material is coated with the amorphous graphite and then mixed with other carbon materials, and thus, a high electrode density can be achieved. Accordingly, even with high electrode density, the invention can provide the negative electrode active material with excellent electrochemical properties such as charge/discharge efficiency and cycle characteristics.</p> |
申请公布号 |
EP2282367(A1) |
申请公布日期 |
2011.02.09 |
申请号 |
EP20090738953 |
申请日期 |
2009.04.28 |
申请人 |
LS MTRON LTD.;SHOWA DENKO K.K. |
发明人 |
HAN, JUNG-MIN;OH, JEONG-HUN;KIM, JONG-SUNG;YOUM, CHUL;HAN, KYUNG-HEE;TAKEUCHI, MASATAKA;SUDOH, AKINORI;SOTOWA, CHIAKI |
分类号 |
H01M4/58;H01M10/36 |
主分类号 |
H01M4/58 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|