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 (i) a lightness (L*) in an L*a*b* color system of not less than 83 and not more than 95, the L*a*b* color system being defined in JIS Z 8781-4, and (ii) a white index (WI) of not less than 85 and not more than 98, the white index (WI) being defined in American Standard Test Methods E313,
• the polyvinylidene fluoride-based resin containing crystal form α in an amount of not less than 34 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.