Abstract
Background: Increasing demand on the large scale H2 generation with the uttermost purity as required by the fuel cells is now totally depending on water splitting. The major energy consuming reaction in water splitting is the thermodynamically un-favoured oxygen evolution reaction (OER) for which the noble metal oxides such as IrO2 and RuO2 have so far been extensively used as efficient electrocatalysts. However, the increased metal dissolution at high anodic overpotential and expenses associated with these materials render its implementation in large scale H2 production. This report provides an alternative way of reducing the total RuO2 content with concomitantly increased corrosion resistance by alloying with NaPO3 at nano-scale. Keywords: Core-shell nanostructures, oxygen evolution, overpotential, nanocatalyst, RuO2, Tafel analysis, water splitting.
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