SEPARATOR FOR ELECTROCHEMICAL ELEMENTS, METHOD FOR PRODUCING SAME, AND METHOD FOR MANUFACTURING ELECTROCHEMICAL ELEMENT

摘要

Provided are: a separator for electrochemical elements, which is capable of ensuring high adhesion strength to an electrode of an electrochemical element; a method for producing this separator for electrochemical elements; and a method for manufacturing an electrochemical element, which uses this separator for electrochemical elements. A separator for electrochemical elements according to the present invention comprises a resin porous layer (I) that is mainly composed of a thermofusible resin (A) having a melting point of 100-170°C and a heat-resistant porous layer (II), and is configured such that: at least one surface thereof is provided with a layer of a specific adhesive resin (C) that is composed of a mixture of a crystalline resin (C1) and an amorphous resin (C2); the ratio of the amorphous resin (C2) in the mixture is from 10% by mass to 50% by mass (inclusive); and the weight per square meter of the layer of the adhesive resin (C) is 0.1-1.5 g/m2. A method for manufacturing an electrochemical element according to the present invention comprises a step wherein a separator for electrochemical elements according to the present invention and an electrode are integrated with each other.