Laminated body

A laminated body, comprising:

• a porous base material containing a polyolefin-based resin as a main component;
• and
• a porous layer on at least one surface of the porous base material, the porous layer containing a polyvinylidene fluoride-based resin,
• the porous base material having a temperature rise ending period of 2.9 seconds·m2/g to 5.7 seconds·m2/g with respect to an amount of resin per unit area in a case where the porous base material has been impregnated with N-methylpyrrolidone containing 3% by weight of water and has then been irradiated with a microwave having a frequency of 2455 Hz and an output of 1800 W,
• the polyvinylidene fluoride-based resin containing crystal form α in an amount of not less than 36 mol % with respect to 100 mol % of a total amount of the crystal form α and crystal form β contained in the polyvinylidene fluoride-based resin,
• where the amount of the crystal form α is calculated from an absorption intensity at around 765 cm−1 in an IR spectrum of the porous layer, and an amount of the crystal form β is calculated from an absorption intensity at around 840 cm−1 in the IR spectrum of the porous layer.