Abstract: Provided is a separator which can make the electric field on the surface of a negative electrode for a metal secondary battery homogeneous to thereby prevent the formation of dendrites. A porous separator for metal secondary batteries, which has a polymer electrolyte layer formed on the surface layer of at least one main surface of a porous polyimide film. It is preferred that the polymer electrolyte layer is composed of both a polymer electrolyte material which is supported on at least one main surface of the porous polyimide film and a polymer electrolyte material which is supported in voids in a layered region that extends from the main surface.
Type:
Application
Filed:
August 27, 2015
Publication date:
September 28, 2017
Applicants:
TOKYO OHKO KOGYO CO., LTD., TOKYO METROPOLITAN UNIVERSITY, 3DOM INC.