Laminate for secondary battery and secondary battery

Abstract

A laminate for a secondary battery includes an electrode and a separator that are stacked via an adhesive material. For this laminate, when a value measured for shear peel strength between the electrode and the separator with varying temperature is taken to be A (mN/mm2), a value of maximum heat shrinkage force for the separator determined by thermomechanical analysis is taken to be B (mN/mm2), and a temperature at which heat shrinkage force for the separator determined by thermomechanical analysis decreases to a value (mN/mm2) that is 20% higher than a value (mN/mm2) of heat shrinkage force at 30° C. is taken to be a heat shrinkage end temperature α (° C.), A has a value satisfying A>B in a temperature range of not lower than 25° C. and not higher than the heat shrinkage end temperature α° C.

CPC Classifications