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. 07, 2010
Filed:
Aug. 24, 2007
Eun-suok OH, Daejeon, KR;
Young-min Kim, Daejeon, KR;
Juhyun Kim, Daejeon, KR;
Ki Woo Chun, Daejeon, KR;
Minjung Ryu, Seoul, KR;
Seungrim Yang, Daejeon, KR;
Min Ho Cho, Seoul, KR;
Eun-Suok Oh, Daejeon, KR;
Young-Min Kim, Daejeon, KR;
Juhyun Kim, Daejeon, KR;
Ki Woo Chun, Daejeon, KR;
Minjung Ryu, Seoul, KR;
SeungRim Yang, Daejeon, KR;
Min Ho Cho, Seoul, KR;
LG Chem, Ltd., , KR;
Abstract
An electrode mix comprising a mixture of a polyvinyl alcohol with polyvinyl pyrrolidone as a binder and a lithium secondary battery comprising the same are disclosed. The electrode mix and lithium secondary battery according to the present invention enable stable maintenance of adhesion between active materials and/or adhesion between the active material and current collector and reduction of volumetric changes of anode active materials during repeated charge/discharge cycles, through the use of a polymer having an improved elongation percentage while exhibiting very high adhesive strength, as a binder of an electrode mix. Therefore, the present invention enables production of a large-capacity lithium secondary battery particularly using a silicon- or tin-based anode active material.