发明名称 |
ELECTRODE ACTIVE MATERIAL FOR SECONDARY BATTERY |
摘要 |
<p>Disclosed is an electrode active material comprising: a core layer capable of repeating lithium intercalation/deintercalation; an amorphous carbon layer; and a crystalline carbon layer, successively, wherein the crystalline carbon layer comprises sheet-like carbon layer units and partially or totally comprises multilayer sheet-like carbon layer units. A secondary battery comprising the same electrode active material is also disclosed. The electrode active material can inhibit variations in volume of the core layer that may occur during repeated charge/discharge cycles, by virtue of the interstitial volumes formed by the multilayer sheet-like carbon layer units in the crystalline carbon layer. Therefore, the battery using the electrode active material can provide improved cycle life characteristics.</p> |
申请公布号 |
EP1952462(A1) |
申请公布日期 |
2008.08.06 |
申请号 |
EP20060812246 |
申请日期 |
2006.10.27 |
申请人 |
LG CHEM, LTD. |
发明人 |
KWON, OU-JUNG;LEE, YONG-JU;CHANG, WON-SEOK;KIM, KI-TAE;LEE, SEO-JAE;LEE, KI-YOUNG |
分类号 |
H01M4/02;H01M4/139;H01M4/36;H01M4/38;H01M4/587;H01M4/62 |
主分类号 |
H01M4/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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