Asahi Kasei Kabushiki Kaisha

Masatoshi Ikemi

Hiroshi Miyazawa

Satoshi Hashimoto

Keitaro Ameyama

Kimio Imaizumi

Koichiro Azuma

Masanori Nakazawa

Naoki Machida

This separator for electricity storage devices comprises a porous base and a thermoplastic polymer layer that is arranged in at least a part of the outermost surface of at least one surface of the porous base, and wherein: a thermoplastic polymer contained in the thermoplastic polymer layer contains a copolymer that has, as a monomer unit, an ethylenically unsaturated monomer (P) having a polyalkylene glycol group; and the thermoplastic polymer layer contains the thermoplastic polymer in an amount of more than 3% by mass but 100% by mass or less if the thermoplastic polymer layer is taken as 100% by mass.

Separator for electricity storage devices, electrode body using same, and electricity storage device

A binder for an electricity storage device comprising a copolymer having an ethylenic unsaturated monomer having a polyalkyleneglycol group (P) as a monomer unit, wherein the average number of repeating units (n) of polyalkyleneglycol groups of the ethylenic unsaturated monomer having a polyalkyleneglycol group (P) is 3 or greater.

Binder for electricity storage device and binder composition for electricity storage device

A separator for electricity storage devices which comprises: a base comprising a porous film; and a thermoplastic polymer arranged on at least one surface of the base. The thermoplastic polymer has a dispersion (&#x3c3;), defined by the following numerical equation using the areas (Si) of Voronoi polygons obtained by Voronoi tessellation, of 0.01-0.7. (In the equation, Si is the measured area of each Voronoi polygon, m is an average of the measured areas of the Voronoi polygons, and n is the total number of the Voronoi polygons).

Separator for electricity storage device

Growing community of inventors

Tokyo, Japan

Masatoshi Ikemi