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.