Laminated body

A laminated body, comprising:

• a porous base material containing a polyolefin-based resin as a main component;
• and
• a porous layer which is disposed on at least one surface of the porous base material and which contains a polyvinylidene fluoride-based resin,
• the porous base material having a piercing strength of not less than 26.0 gf/g/m2, which piercing strength is measured with respect to a weight per unit area of the porous base material,
• the polyvinylidene fluoride-based resin having a weight-average molecular weight of 500,000 to 1,500,000,
• the porous base material having a value in a range of 0.00 to 0.54, which value is represented by the following Expression (1):
• |1−T/M| (1)
• where (i) T represents a distance by which the porous base material moves in a traverse direction from a starting point of measurement to a point where a critical load is obtained in a scratch test under a constant load of 0.1 N and (ii) M represents a distance by which the porous base material moves in a machine direction from a starting point of measurement to a point where a critical load is obtained in a scratch test under a constant load of 0.1 N,
• the polyvinylidene fluoride-based resin containing crystal form a in an amount of not less than 70 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 a 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.