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Issue 45, 2018
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From an Fe2P3 complex to FeP nanoparticles as efficient electrocatalysts for water-splitting

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Abstract

In large-scale, hydrogen production from water-splitting represents the most promising solution for a clean, recyclable, and low-cost energy source. The realization of viable technological solutions requires suitable efficient electrochemical catalysts with low overpotentials and long-term stability for both hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) based on cheap and nontoxic materials. Herein, we present a unique molecular approach to monodispersed, ultra-small, and superiorly active iron phosphide (FeP) electrocatalysts for bifunctional OER, HER, and overall water-splitting. They result from transformation of a molecular iron phosphide precursor, containing a [Fe2P3] core with mixed-valence FeIIFeIII sites bridged by an asymmetric cyclo-P(2+1)3− ligand. The as-synthesized FeP nanoparticles act as long-lasting electrocatalysts for OER and HER with low overpotential and high current densities that render them one of the best-performing electrocatalysts hitherto known. The fabricated alkaline electrolyzer delivered low cell voltage with durability over weeks, representing an attractive catalyst for large-scale water-splitting technologies.

Graphical abstract: From an Fe2P3 complex to FeP nanoparticles as efficient electrocatalysts for water-splitting

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Publication details

The article was received on 31 Jul 2018, accepted on 15 Sep 2018 and first published on 17 Sep 2018


Article type: Edge Article
DOI: 10.1039/C8SC03407A
Citation: Chem. Sci., 2018,9, 8590-8597
  • Open access: Creative Commons BY-NC license
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    From an Fe2P3 complex to FeP nanoparticles as efficient electrocatalysts for water-splitting

    S. Yao, V. Forstner, P. W. Menezes, C. Panda, S. Mebs, E. M. Zolnhofer, M. E. Miehlich, T. Szilvási, N. Ashok Kumar, M. Haumann, K. Meyer, H. Grützmacher and M. Driess, Chem. Sci., 2018, 9, 8590
    DOI: 10.1039/C8SC03407A

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      [Original citation] - Published by The Royal Society of Chemistry.

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