ULTRA-LOW PLATINUM GROUP METAL CONTAINING ANODE ELECTROCATALYSTS FOR ACID MEDIATED PROTON EXCHANGE MEMBRANE FUEL CELLS

摘要: The invention relates to systems and methods for successful operation of acid mediated proton exchange membrane fuel cell (PEMFC), and highly efficient, earth-abundant, and ultra-low noble metal-containing, eg, platinum group metal (PGM)-containing, electrocatalyst materials for anodic hydrogen oxidation reaction (HOR). The electrocatalyst materials include metal silicide alloy-based solid solutions of the general formula:(A (nx) B x) Si y, wherein A is a transition metal element or mixture or alloy thereof, B is a noble metal element or mixture or alloy thereof, and each of n and x, is a positive integer or a positive fractional number, and y is a positive integer.