The HP process produces highly dispersed crystallites of a Platinum Ruthenium (PtRu) alloy supported on carbon. These new catalysts are available with a standard Pt:Ru atomic ratio of 1:1 and from 5wt.% to 80wt.% total metal loading. These catalysts provide for a highly alloyed mixture of platinum and ruthenium without sacrificing particle size. These have been found to be superior to than for CO tolerance and methanol oxidation.
Pt:Ru supported alloy electrocatalysts have shown improved tolerance to CO contaminated hydrogen fuel streams as compared to Pt at the anode of low temperature (PEM) fuel cells.
Platinum Ruthenium has significance as the catalyst for methanol oxidation in Direct Methanol Fuel Cells (DMFC).