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Hierarchical NiFeP microflowers directly grown on Ni foam for efficient electrocatalytic oxygen evolution
Journal of Materials Chemistry A ( IF 10.733 ) Pub Date : 2017-05-09 , DOI: 10.1039/c7ta02968c
Jiahao Yu, Gongzhen Cheng, Wei Luo

Developing low-cost, highly efficient, and superior stable electrocatalysts for the oxygen evolution reaction (OER) is essential for upcoming renewable and clean energy systems. Here, 3D ternary nickel iron phosphide microflowers with a hierarchically porous morphology directly grown on Ni foam via a successive hydrothermal and phosphidation method are synthesized. Benefitting from their unique 3D hierarchical microflower-like structure and the strong electron interactions between Fe, Ni and P, the as-synthesized (NixFe1−x)2P catalysts can effectively catalyze the OER with an overpotential of 219 mV at a current density of 20 mA cm−2 in alkaline media, which is, to the best of our knowledge, the best among the reported non-noble metal-based catalysts.
更新日期:2017-06-07

 

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