| abstract |
[PROBLEMS] To provide a porous layer for a nonaqueous electrolyte secondary battery excellent in resistance of a separator. [MEANS FOR SOLVING PROBLEMS] An insulating porous layer for a non-aqueous electrolyte secondary battery comprising an inorganic filler and a resin, Wherein the inorganic filler has a center particle diameter of 0.1 占 퐉 to 11 占 퐉, a BET specific surface area per unit area of 100 m 2 / g or less, Wherein an insulating porous layer for a non-aqueous electrolyte secondary cell is characterized in that the value represented by the following formula (1) is in the range of 0.10 to 0.40. | 1-T / M | ... (One) (In the formula (1), T represents a distance to a critical load in a scratch test under a constant load of 0.1 N in TD, and M represents a critical load in a scratch test under a constant load of 0.1 N in MD Lt; / RTI > |