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Issue 14, 2018
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One-step growth of nitrogen-decorated iron–nickel sulfide nanosheets for the oxygen evolution reaction

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Abstract

The large overpotential loss of the oxygen evolution reaction (OER) is a major obstacle restricting the wide commercial application of water-splitting devices. Herein, we report one-step growth of nitrogen-decorated iron–nickel sulfide nanosheet arrays on a conductive Ni–Fe alloy foam (N–(Ni,Fe)3S2/NIF). It is noteworthy that N–(Ni,Fe)3S2/NIF has an ultra-low overpotential of 167 mV at 10 mA cm−2 and exhibits the best OER performance among the non-precious electrocatalysts reported so far. Furthermore, N–(Ni,Fe)3S2/NIF shows nearly no degradation after a long-term OER test for 50 h at a constant current density of 10 mA cm−2. The superior catalytic activity and stability for the OER is due to the application of simultaneous regulation of specific morphologies, incorporation of Fe, and surface nitrogen-anion decoration on Ni3S2 materials. In addition, N–(Ni,Fe)3S2/NIF prepared by another method also shows excellent OER activity. This work will pave a new way to develop advanced electrocatalysts with a lower OER overpotential.

Graphical abstract: One-step growth of nitrogen-decorated iron–nickel sulfide nanosheets for the oxygen evolution reaction

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Publication details

The article was received on 17 Jan 2018, accepted on 25 Feb 2018 and first published on 27 Feb 2018


Article type: Communication
DOI: 10.1039/C8TA00536B
Citation: J. Mater. Chem. A, 2018,6, 5592-5597
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    One-step growth of nitrogen-decorated iron–nickel sulfide nanosheets for the oxygen evolution reaction

    Y. Jin, X. Yue, H. Du, K. Wang, S. Huang and P. K. Shen, J. Mater. Chem. A, 2018, 6, 5592
    DOI: 10.1039/C8TA00536B

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