Synergistic zinc and tantalum doping of RuO2 boosts acidic water oxidation activity and stability

Abstract

Zinc and tantalum co-doped ruthenium dioxide nanocatalysts are synthesized via a thermal decomposition strategy. The synergistic modulations originated from Zn and Ta co-doping result in a well-balanced activity-stability profile. The optimized Ru0.5Zn0.2Ta0.3O2 catalyst demonstrates an overpotential of 201 mV and over 500 h durability at 10 mA cm-2 in 0.5 M H2SO4.