Controllable Synthesis of Fe-Doped NiCo2O4 Nanobelts as Superior Catalysts for Oxygen Evolution Reaction |
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| Authors: | Dr Pengkun Wei Yang Yang Hongzhi Kang Zewei Hao Prof Donggang Guo Prof Lu Liu |
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| Institution: | 1. Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin, 300350 P. R. China;2. College of Environment and Resource, Shanxi University, Taiyuan, 30006 P. R. China |
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| Abstract: | As one of the promising clean and renewable technologies, water splitting has been a hot topic, especially the half-reaction of oxygen evolution reaction (OER) due to its sluggish and complex kinetics. Hence, Fe-doped NiCo2O4 nanobelts were designed and prepared as catalysts toward OER. By increasing the Fe amount, the catalytic performances of the as-synthesized products went up and then decreased. Profiting from the synergistic effect between Fe atom and NiCo2O4, all the Fe-NiCo2O4 catalysts exhibited superior catalytic activities to the corresponding NiCo2O4. In addition, the characteristic nanobelt architecture facilitates the conduction of electrons and the exposure of active sites. With the optimal Fe content, the 9.1 % Fe-NiCo2O4 yielded the smallest overpotential and Tafel slope among the catalysts, distinctly lower than that of RuO2. |
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| Keywords: | catalytic performances Fe-doped NiCo2O4 nanobelts oxygen evolution reaction water splitting |
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