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. 10, 2017
Filed:
May. 28, 2013
Lg Chem, Ltd., Seoul, KR;
Toray Industries, Inc., Chuo-Ku, JP;
Byeong-Gyu Cho, Daejeon, KR;
Jeong-Min Ha, Daejeon, KR;
Su-Jin Yoon, Daejeon, KR;
Jong-Hun Kim, Daejeon, KR;
Byoung-Jin Shin, Daejeon, KR;
LG Chem, Ltd., , KR;
TORAY INDUSTRIES, INC., , JP;
Abstract
The present invention provides a separator having a porous substrate; and a porous coating layer formed on one surface of the porous substrate and comprising a mixture of inorganic particles and a binder polymer, which has a value of a porosity×an air permeability per thickness in the range of 5 to 40, the porosity and the air permeability per thickness. The separator having a porous coating layer according to the present invention has a porosity which is controlled depending on the air permeability of the porous substrate, and thus exhibit superior ionic conductivity as well as good mechanical properties, thereby contributing to improve the performance and safety of an electrochemical device.