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:
Oct. 28, 2014
Filed:
Oct. 08, 2008
Youngkwang Yun, Daejeon, KR;
Sangbaek Ryu, Daejeon, KR;
Jinsoo Lee, Daejeon, KR;
Sooryoung Kim, Daejeon, KR;
Byungjin Choi, Daejeon, KR;
Hyang Mok Lee, Daejeon, KR;
Youngkwang Yun, Daejeon, KR;
Sangbaek Ryu, Daejeon, KR;
Jinsoo Lee, Daejeon, KR;
SooRyoung Kim, Daejeon, KR;
Byungjin Choi, Daejeon, KR;
Hyang Mok Lee, Daejeon, KR;
LG Chem, Ltd., Seoul, KR;
Abstract
Provided is a method for fabrication of a jelly-roll type electrode assembly having a cathode/separation membrane/anode laminate structure, including: (a) coating both sides of a porous substrate with organic/inorganic composite layers, each of which includes inorganic particles and an organic polymer as a binder, so as to fabricate a composite membrane; and (b) inserting one end of a sheet laminate comprising a cathode sheet and an anode sheet as well as the composite membrane into a mandrel, winding the sheet laminate around the mandrel, and then, removing the mandrel, wherein the organic/inorganic composite layer includes microfine pores capable of moderating a variation in volume during charge/discharge of a secondary battery and an interfacial friction coefficient between the composite membrane and the mandrel is not more than 0.28.