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:
Nov. 26, 2013
Filed:
Sep. 07, 2009
Hiroyoshi Take, Osaka, JP;
Shunsuke Noumi, Osaka, JP;
Chiharu Odane, Osaka, JP;
Takuji Shintani, Osaka, JP;
Hiroyoshi Take, Osaka, JP;
Shunsuke Noumi, Osaka, JP;
Chiharu Odane, Osaka, JP;
Takuji Shintani, Osaka, JP;
Nitto Denko Corporation, Osaka, JP;
Abstract
A battery separator () of the present invention includes a porous film () serving as a substrate and a crosslinked polymer layer () supported on the porous film (). The crosslinked polymer layer () contains a crosslinked polymer and inorganic particles, and is non-porous. The crosslinked polymer is obtained by reacting a reactive polymer having a functional group in its molecule with a polyfunctional compound reactive with the functional group so as to crosslink at least a part of the reactive polymer. A lithium ion secondary battery of the present invention includes a positive electrode (), a negative electrode (), the battery separator () of the present invention disposed between the positive electrode () and the negative electrode (), and a non-aqueous electrolyte solution. The battery separator () is disposed so that the porous film () faces the negative electrode () and the crosslinked polymer layer () faces the positive electrode ().