| 主权项 |
1. A separator comprising:
a substrate; and a layer formed on at least one surface of the substrate and having a heat capacity per unit area of 0.0001 J/Kcm2 or more and a heat capacity per unit volume of 3.0 J/Kcm3 or less, wherein the layer contains particles and a resin material, and the particles contain at least one selected from boehmite, yttrium oxide, titanium oxide, magnesium oxide, zirconium oxide, silicon oxide, zinc oxide, aluminum nitride, boron nitride, silicon nitride, titanium nitride, silicon carbide, boron carbide, barium titanate, strontium titanate, barium sulfate, a porous aluminosilicate, a lamellar silicate, Li2O4, Li3PO4, LiF, aluminum hydroxide, graphite, carbon nanotubes, and diamond. |
