Slurry compositions for electrochemical capacitor electrodes, electrodes for electrochemical capacitors, and electrochemical capacitors

摘要

An object of the present invention is to provide a slurry composition for an electrochemical capacitor electrode which can exhibit excellent cycle characteristics and float characteristics of an electrochemical capacitor. The slurry composition of the present invention includes an electrode active material, a copolymer and a dispersion medium. The copolymer has an electrolytic solution swelling degree of less than 120 mass%. The copolymer contains 20.0% by mass or more and 99.9% by mass or less of an ethylenically unsaturated carboxylic acid compound (A) composed of at least one of ethylenic unsaturated carboxylic acid and its salt, and water (B) having an ethylenically unsaturated bond having a solubility of at least 7 g per 100 g of the monomer composition.