Abstract
AbstractNano crystalline La0.85Sr0.15CoO3 and ruthenium doped compounds (La0.85Sr0.15Co0.9975Ru0.0025O3, La0.85Sr0.15Co0.995Ru0.005O3, La0.85Sr0.15Co0.99Ru0.01O3) are synthesized using solution combustion method. Completely characterized samples are studied for electrochemical OER in neutral and basic medium. Significant enhancement in catalytic activity is noticed once Ru is substituted in the cobalt site. With higher doping level of Ru, capacitance also increases as depicted in the CV behavior. Tafel slope measurements indicate that Ru substitution has profound effect as enhancement in the exchange current density is observed in neutral K2SO4 medium. Enhancement is anticipated due to substitution of Ru, as the RuO2 mixed catalyst does not give similar activity.
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