catalyst materials having a surface comprising a composition m x / pt y / sub ; wherein m is selected from the group of elements fe , co , rh and ir ; or wherein m represents two different elements selected from the group comprising fe , co , rh , ir , ni , pd , cu , ag , au and sn ; and wherein sub represents a substrate material selected from ru and os ; the respective components being present within specific ranges , display improved properties for use in anodes for low - temperature fuel cell anodes for pemfc fuel cells and direct methanol fuel cells .