Pt-Ru supported on double-walled carbon nanotubes as high-performance anode catalysts for direct methanol fuel cells

Pt-Ru supported on carbon nanotubes (single-walled nanotubes, double-walled nanotubes (DWNTs) and multi-walled nanotubes) catalysts are prepared by an ethylene glycol reduction method. The Pt-Ru/DWNTs catalyst shows the highest specific activity for methanol oxidation reaction in rotating disk electrode experiments and the highest performance as an anode catalyst in direct methanol fuel cell single cell tests.