SEPARATOR FOR ELECTROCHEMICAL DEVICE, METHOD FOR PRODUCING THE SAME, AND ELECTROCHEMICAL DEVICE

摘要

The method for producing a separator for an electrochemical device of the present invention includes: obtaining a separator forming composition, wherein the separator forming composition contains a resin raw material including a monomer or an oligomer, a solvent (a) capable of dissolving the resin raw material; and a solvent (b) capable of causing the resin raw material to agglomerate by solvent shock, and Vsb/Vsa as a ratio between the volume Vsa of the solvent (a) and the volume Vsb of the solvent (b) is 0.04 to 0.2; applying the composition to a substrate; irradiating with energy rays a coating of the applied composition to form a resin (A) having a crosslinked structure; and drying the coating after the formation of the resin (A) to form pores. The separator for an electrochemical device of the present invention is produced by the production method of the present invention.