CATALYST INK

摘要

A catalyst ink is provided, comprising: 25-95 % by weight water; 1-50 % by weight of at least one solid catalyst, typically a highly dispersed platinum catalyst; 1 50 % by weight of at least one polymer electrolyte in acid (H+) form; and 1-50 % by weight of at least one polar aprotic organic solvent. Th e catalyst ink typically has a viscosity at 1 sec-1 of 10 Pa.bullet.sec or les s. The catalyst ink typically does not ignite spontaneously when dried to completion in air at a temperature of 80~ C or greater. The catalyst ink may be used in the fabrication of membrane electrode assemblies for use in fuel cells.