From an Fe2P3 complex to FeP nanoparticles as efficient electrocatalysts for water-splitting
Menezes, Prashanth W.
Zolnhofer, Eva M.
Miehlich, Matthias E.
- Journal Article
Rights / licenseCreative Commons Attribution-NonCommercial 3.0 Unported
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. Show more
Journal / seriesChemical Science
Pages / Article No.
PublisherRoyal Society of Chemistry
Organisational unit03447 - Grützmacher, Hansjörg / Grützmacher, Hansjörg
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