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Efficient MMoO4 (M = Co, Ni) carbon cloth electrodes for water oxidation

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Abstract

The development of stable, highly active and cheap electrocatalysts towards the oxygen evolution reaction (OER) has been an ongoing challenge due to practical problems such as slow kinetics and high overpotential. Herein, we utilized a one-pot hydrothermal method to prepare cobalt/nickel molybdate hierarchical microflowers on conductive carbon cloth (MMoO4-CC, M = Co, Ni) as three-dimensional self-supported electrodes for the oxygen evolution reaction. CoMoO4-CC showed better catalytic activity than NiMoO4-CC. Benefiting from the synergistic effect of a large active area, fast charge and mass transport as well as a three-dimensional conducting path, the CoMoO4-CC nanosheet electrode showed a large current density and a relatively low starting potential, delivering 10 mA cm−2 current densities at an overpotential of 290 mV and a Tafel slope of 94 mV dec−1. Furthermore, the CoMoO4-CC nanomaterial shows better electrocatalytic stability than IrO2-CCa, which could be a promising electrocatalyst for large-scale water oxidation.

Graphical abstract: Efficient MMoO4 (M = Co, Ni) carbon cloth electrodes for water oxidation

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Publication details

The article was received on 25 Jul 2017, accepted on 07 Sep 2017 and first published on 07 Sep 2017


Article type: Research Article
DOI: 10.1039/C7QI00435D
Citation: Inorg. Chem. Front., 2017, Advance Article
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    Efficient MMoO4 (M = Co, Ni) carbon cloth electrodes for water oxidation

    J. Meng, J. Fu, X. Yang, M. Wei, S. Liang, H. Zang, H. Tan, Y. Wang and Y. Li, Inorg. Chem. Front., 2017, Advance Article , DOI: 10.1039/C7QI00435D

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