| abstract |
The present invention provides, as a non-aqueous electrolyte secondary battery capable of suppressing a decrease in charge capacity after high-rate discharge, a non-aqueous electrolyte secondary battery including a spacer for a non-aqueous electrolyte secondary battery including a polyolefin porous film a non-aqueous electrolyte solution containing a given additive at a level of 0.5 ppm or more and 300 ppm or less, the peel strength of the polyolefin porous film measured by the blocking test is 0.2 N or more, and the change in the puncture strength before and after the blocking test The rate is below 15%. |