Abstract

Balsa woods derived carbons (BCs), which are decorated with ruthenium (Ru) and cobalt (Co) nanoparticles, are fabricated by simply annealing mixtures of BCs, ruthenium chloride and cobalt nitrates in hydrogen. Electrochemical measurement results demonstrate that the obtained BC/Ru/Co composites exhibit high oxygen evolution reaction (OER) activity and excellent durability, both of which are better than those of the state-of-the-art iridium oxide catalysts. The superior OER performances of the BC/Ru/Co composites may be ascribed to the collaborative contributions of Ru, Co and their large surface areas.

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