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An Fe-MOF nanosheet array with superior activity towards the alkaline oxygen evolution reaction

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Abstract

It is highly desired to develop high-performance non-noble-metal electrocatalysts for the oxygen evolution reaction (OER) in alkaline solutions. In this communication, we report the hydrothermal synthesis of an Fe-MOF nanosheet array on nickel foam (Fe-MOF/NF) using aqueous Fe3+ and terephthalic acid as precursors. Such an Fe-MOF/NF shows superior electrocatalytic performance towards the OER in 1.0 M KOH with a low overpotential of 240 mV at 50 mA cm−2 and a small Tafel slope of 72 mV dec−1. Notably, this catalyst also exhibits high long-term electrochemical durability to maintain its activity for at least 30 h. Moreover, this catalyst electrode achieves a high turnover frequency of 0.74 mol O2 per s at an overpotential of 300 mV.

Graphical abstract: An Fe-MOF nanosheet array with superior activity towards the alkaline oxygen evolution reaction

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Publication details

The article was received on 23 Feb 2018, accepted on 12 Apr 2018 and first published on 13 Apr 2018


Article type: Research Article
DOI: 10.1039/C8QI00163D
Citation: Inorg. Chem. Front., 2018, Advance Article
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    An Fe-MOF nanosheet array with superior activity towards the alkaline oxygen evolution reaction

    X. Zhang, Q. Liu, X. Shi, A. M. Asiri and X. Sun, Inorg. Chem. Front., 2018, Advance Article , DOI: 10.1039/C8QI00163D

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