FIELD: electricity.
SUBSTANCE: organic/inorganic composite separator includes a porous substrate having multiple pores; and a porous layer of a coating formed at least on one surface of the porous substrate by multiple inorganic particles and a binding polymer. The binding polymer is a copolymer, containing the following: (a) the first monomer link, having an edge angle of wetting with a water angle in the range from 0° to 49°; and (b) the second monomer link, having an edge angle of wetting with a water drop in the range from 50° to 130°.
EFFECT: higher thermal stability.
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