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. 01, 2018
Filed:
Aug. 14, 2015
Lg Chem, Ltd., Seoul, KR;
Toray Battery Separator Film Co., Ltd., Nasushiobara-shi, Tochigi, JP;
Yoon-Jung Bae, Daejeon, KR;
In-Chul Kim, Daejeon, KR;
Seung-Taek Hong, Seoul, KR;
Jong-Hwan Kim, Daejeon, KR;
Han-Ho Lee, Daejeon, KR;
LG CHEM, LTD., Seoul, KR;
TORAY INDUSTRIES, INC., Tokyo, JP;
Abstract
A separator includes a monolayer-type polyolefin-based micro-porous film having a porosity of 40 to 60%, an average pore diameter of 60 nm or less, and an air permeability of 350 s/100 mL or less; and a porous coating layer formed on at least one surface of the micro-porous film and made of a mixture of a plurality of inorganic particles and a binder polymer. An electrochemical device having the above separator has excellent thermal stability and allows a high power while minimizing the occurrence of leak current.