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Hierarchical NiFeP microflowers directly grown on Ni foam for efficient electrocatalytic oxygen evolution

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Abstract

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.

Graphical abstract: Hierarchical NiFeP microflowers directly grown on Ni foam for efficient electrocatalytic oxygen evolution

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Publication details

The article was received on 06 Apr 2017, accepted on 09 May 2017 and first published on 09 May 2017


Article type: Paper
DOI: 10.1039/C7TA02968C
Citation: J. Mater. Chem. A, 2017, Advance Article
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    Hierarchical NiFeP microflowers directly grown on Ni foam for efficient electrocatalytic oxygen evolution

    J. Yu, G. Cheng and W. Luo, J. Mater. Chem. A, 2017, Advance Article , DOI: 10.1039/C7TA02968C

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