Process for the preparation of electrocatalysts via citric acid chemical reduction for proton exchanger membrane fuel cell application

摘要

"PROCESS FOR PREPARING ELECTROCATALIZERS THROUGH CHEMICAL CITRIC ACID REDUCTION FOR APPLICATION IN FUEL CELLS WITH A PROTON EXCHANGE MEMBRANE". The present invention relates to a process for preparing high surface area carbon dispersed metal nanoparticle electrocatalysts obtained by reduction by citric acid. In this method citric acid acts as a reducing agent for metal salts. Electrocatalysts can be prepared from salts of Pt, Ru, Pd, Rh, Mn, Fe, Co, Os, Ir, Mo, Cr, V, W, Sn, U and rare earths or a combination thereof. The electrocatalysts thus obtained can be applied as anode in hydrogen oxidation, hydrogen / CO mixtures and alcohols directly as fuels, and also as cathode in oxygen or air reduction in fuel cell with proton exchange membrane.