Abstract
We prepared porous Fe-doped nickel cobaltate (Fe-NiCo2O4) hollow hierarchical nanospheres through a facile self-templated synthetic strategy. Due to the porous hollow structure and composition, the Fe-NiCo2O4 presented vastly superior electrocatalytic activity for the oxygen evolution reaction (OER), compared with NiCo2O4 and the majority of other OER catalysts. With an aim of stimulating a current density of 10 mA·cm−2, the Fe-NiCo2O4 catalyst needs an overpotential of 210 mV, which is on a par with the general properties of commercial IrO2. In addition, the Fe-NiCo2O4 catalyst performed stably in long-term testing. The excellent activity and long-term stability showed that such catalysts have great promise for widespread application in the field of water splitting.
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This work was supported by the Department of Education Basic Research Operating Costs of Heilongjiang Province, China (Grant No. 135309353).
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Zheng, W., Sun, H., Li, X. et al. Fe-doped NiCo2O4 hollow hierarchical sphere as an efficient electrocatalyst for oxygen evolution reaction. Front. Mater. Sci. 15, 577–588 (2021). https://doi.org/10.1007/s11706-021-0579-z
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DOI: https://doi.org/10.1007/s11706-021-0579-z