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:
Dec. 01, 2015
Filed:
Nov. 09, 2011
Dong-sub Jung, Daejeon, KR;
Hye-min Ji, Gyeonggi-do, KR;
Je-young Kim, Daejeon, KR;
Ki-tae Kim, Daejeon, KR;
Yong-ju Lee, Daejeon, KR;
Dong-Sub Jung, Daejeon, KR;
Hye-Min Ji, Gyeonggi-do, KR;
Je-Young Kim, Daejeon, KR;
Ki-Tae Kim, Daejeon, KR;
Yong-Ju Lee, Daejeon, KR;
LG Chem, Ltd., , KR;
Abstract
An anode active material for a lithium secondary battery includes a silicon alloy that includes silicon and at least one kind of metal other than silicon, the silicon alloy allowing alloying with lithium. A volume of an inactive region in the silicon alloy, which is not reacted with lithium, is 50 to 75% of the entire volume of an active material. The anode active material has a large capacity in comparison to carbon-based anode active materials, and also ensures small volume expansion and high capacity retention ratio after charging/discharging, resulting in excellent cycle characteristics.