Patent ID: 9287544
Filing Date: 2016-03-15
CPC Classification: H01M,Y02E

Claim Text:
1. A heat-resistant porous film formed on a porous base material for forming a separator for a nonaqueous battery or on an electrode used in a nonaqueous battery, wherein the heat-resistant porous film comprises at least an organic binder and particles having a heat-resistant temperature of 130° C. or higher, the heat-resistant porous film has pores capable of transmitting Li ions in the nonaqueous battery, as the organic binder, the heat-resistant porous film comprises a polymer having a backbone derived from a polymeric double bond and a group having a cyclic structure including an amide bond, the polymer having a glass transition temperature of 130° C. or higher and a weight-average molecular weight of 350,000 or more, and a 180° peel strength between the heat-resistant porous film and the porous base material or the electrode is 0.6 N/cm or more.