Direct One-Step Growth of Bimetallic Ni2Mo3N on Ni Foam as an Efficient Oxygen Evolution Electrocatalyst

Sang Heon Park; Soon Hyung Kang; Duck Hyun Youn

doi:10.3390/ma14164768

Direct One-Step Growth of Bimetallic Ni₂Mo₃N on Ni Foam as an Efficient Oxygen Evolution Electrocatalyst

Materials (Basel). 2021 Aug 23;14(16):4768. doi: 10.3390/ma14164768.

Authors

Sang Heon Park¹, Soon Hyung Kang², Duck Hyun Youn¹

Affiliations

¹ Department of Chemical Engineering, Interdisciplinary Program in Advanced Functional Materials and Devices Development, Kangwon National University, Chuncheon 24341, Korea.
² Department of Chemistry Education, Chonnam National University, Gwangju 61186, Korea.

Abstract

A simple and economical synthetic route for direct one-step growth of bimetallic Ni₂Mo₃N nanoparticles on Ni foam substrate (Ni₂Mo₃N/NF) and its catalytic performance during an oxygen evolution reaction (OER) are reported. The Ni₂Mo₃N/NF catalyst was obtained by annealing a mixture of a Mo precursor, Ni foam, and urea at 600 °C under N₂ flow using one-pot synthesis. Moreover, the Ni₂Mo₃N/NF exhibited high OER activity with low overpotential values (336.38 mV at 50 mA cm^-2 and 392.49 mV at 100 mA cm^-2) and good stability for 5 h in Fe-purified alkaline electrolyte. The Ni₂Mo₃N nanoparticle surfaces converted into amorphous surface oxide species during the OER, which might be attributed to the OER activity.

Keywords: Ni foam; Ni2Mo3N; bimetallic nitride; oxygen evolution reaction; water splitting.

Abstract

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