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:
Apr. 07, 2015
Filed:
Aug. 05, 2013
Lg Chem, Ltd., Seoul, KR;
Chul-Haeng Lee, Daejeon, KR;
Doo Kyung Yang, Daejeon, KR;
LG Chem, Ltd., , KR;
Abstract
The present invention provides a lithium secondary battery and the preparation thereof, more specifically a lithium secondary battery comprising an electrode assembly having a cathode, an anode, and a separator interposed between the cathode and the anode; and a non-aqueous electrolyte solution impregnated in the electrode assembly, wherein the separator further comprises a layer having a plurality of destroyed capsules dispersed therein, the layer being formed on at least one surface of the separator coming into contact with the cathode and the anode, and the destroyed capsules has a film formed from a binder polymer and inorganic particles dispersed therebetween. The lithium secondary battery of the present invention can be prepared without the separate introducing process of a non-aqueous electrolyte solution, and has a separator exhibiting improved mechanical property and safety.