RuO2 supported on Sb-doped SnO2 nanoparticles for polymer electrolyte membrane water electrolysers

With a colloid method, RuO2 was deposited on Sb-doped SnO2 nanoparticles (ATO, Aldrich, 30–40 nm), which was employed as a novel support material for anode catalysts of polymer electrolyte membrane water electrolysers (PEMWE). Distinctive RuO2 nanoparticles (10–15 nm) were stably deposited on ATO nanoparticles, which were characterized with XRD and SEM. RuO2/ATO exhibited higher activity than unsupported RuO2 for oxygen evolution. A PEMWE single cell with 10 mg cm−2 20 wt.% RuO2/ATO achieved 1.56 V at 1 A cm−2 at 80 °C.