Hierarchical NiFeP microflowers directly grown on Ni foam for efficient electrocatalytic oxygen evolution,Journal of Materials Chemistry A

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Hierarchical NiFeP microflowers directly grown on Ni foam for efficient electrocatalytic oxygen evolution
Journal of Materials Chemistry A ( IF 10.7 ) Pub Date : 2017-05-09 00:00:00 , DOI: 10.1039/c7ta02968c
Jiahao Yu _{1,

2,

3,

4} , Gongzhen Cheng _{1,

2,

3,

4} , Wei Luo _{1,

2,

3,

4,

5}

Affiliation

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 (Ni_xFe_1−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.

中文翻译：

分层NiFeP微型花直接在泡沫镍上生长，以有效地产生电催化氧

对于即将到来的可再生能源和清洁能源系统，开发用于氧气析出反应（OER）的低成本，高效且优异的稳定电催化剂至关重要。在此，通过连续的水热和磷酸化方法，直接在Ni泡沫上生长了具有分层多孔形态的3D三元磷化镍铁微花。得益于其独特的3D分层微花状结构以及Fe，Ni和P之间的强电子相互作用，合成后的（Ni _x Fe _{1- x}）₂ P催化剂可以在190 mV的超电势下以219 mV的超有效催化能力。电流密度20 mA cm ^-2 据我们所知，碱性介质是已报道的非贵金属基催化剂中最好的。

更新日期：2017-06-07

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