Facile Hydrothermal Synthesis of CoFe2O4/Co3O4 Nanostructures for Efficient Oxygen Evolution Reaction
Co/Fe-based spinel oxide materials play an important role in the development of non-precious-metal-based electrocatalysts toward water splitting. Herein, we have synthesized the CoFe2O4/Co3O4 nanostructures via facile hydrothermal method. CoFe2O4/Co3O4 nanostructures exhibited a low overpotential of 311 mV @10 mA/cm2, a small Tafel slope of 87 mV/dec, as well as remarkable long-term stability towards OER. The performance of CoFe2O4/Co3O4 nanostructures is considerably higher than that of bare CoFe2O4 and Co3O4 materials. The outstanding performance is mainly attributed to the synergistic effect and increased active sites for OER reactions. This study can pave a pathway for engineering non-noble metal-based efficient, cost-effective, and durable electrocatalysts for OER.
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