The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 22, 2012
Filed:
Jun. 25, 2004
You Min Kim, Daegu, KR;
Ki Young Lee, Daejeon, KR;
Seo Jae Lee, Daejeon, KR;
Suk Myung Roh, Goyang-si, KR;
Ou Jung Kwon, Seoul, KR;
You Min Kim, Daegu, KR;
Ki Young Lee, Daejeon, KR;
Seo Jae Lee, Daejeon, KR;
Suk Myung Roh, Goyang-si, KR;
Ou Jung Kwon, Seoul, KR;
LG Chem, Ltd., , KR;
Abstract
Disclosed is an anode material comprising a metal core layer capable of repetitive lithium intercalation/deintercalation; an amorphous carbon layer coated on the surface of the metal core layer, and a crystalline carbon layer coated on the amorphous carbon layer. The anode material not only maintains a high charge/discharge capacity, which is an advantage of a metal-based anode material, but also inhibits changes in the volume of a metal core layer caused by repetitive lithium intercalation/deintercalation in virtue of an amorphous carbon layer and a crystalline carbon layer, thereby improving the cycle life characteristics of cells.