Abstract: The present invention concerns an electronically conductive polymer film comprising colloidal catalytic particles homogeneously dispersed therein. The electronically conductive polymer is preferably polypyrrole although other conductive polymers, for example, polyaniline and polythiophene are also utilizable. The preferred catalytic particles are platinum although other catalytic particles such as RuO.sub.2, Ag, Pd, Ni, Cd, Co, Mo, Mn-oxide, Mn-sulfide, a molybdate, a tungstate, tungsten carbide, a thiospinel, Ru, Rh, Os, It, or a platinum palladium alloy (Pt/Pd).The colloidal catalytic particles incorporated in the film of the present invention are less than 100 nanometers in size, preferably about 10 nm in size. In a most preferred composition, the polymer is polypyrrole and the catalytic particles are platinum.The present invention also involves a method of producing an electronically conductive polymer film containing colloidal catalytic particles homogeneously dispersed therein.