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Hierarchical CoMoO4 nanoparticles decorated nanoplate array as an electrocatalyst toward boosted alkaline oxygen evolution reaction

Abstract

Highly efficient noble metal-free water oxidation electrocatalysts plays a key role in water splitting devices for large-scale hydrogen production. In this communication, we report the surface engineering of a CoMoO4 nanoplate array on nickel foam (CoMoO4 NPAs/NF) by CoMoO4 nanoparticles decorating. The hierarchical structure of as-formed CoMoO4 NP@PAs/NF (CoMoO4 nanoparticles coated nanoplate array on Ni foam) guarantees the exposing of more catalytic active sites with a much larger electrochemically active surface area, leading to boosted catalytic activity for oxygen evolution reaction (OER) in alkaline media. In 1 M KOH, it needs a low overpotential of 317 mV to attain 100 mA cm–2, 72 mV less than that for CoMoO4 NPAs/NF. Moreover, this system is also durable with a twice higher turnover frequency (TOF) value of 0.41 s-1 at 400 mV overpotential compared with CoMoO4 NPAs/NF.

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Supplementary files

Article information


Submitted
19 Nov 2019
Accepted
09 Jan 2020
First published
14 Jan 2020

Sustainable Energy Fuels, 2020, Accepted Manuscript
Article type
Communication

Hierarchical CoMoO4 nanoparticles decorated nanoplate array as an electrocatalyst toward boosted alkaline oxygen evolution reaction

X. Guan, L. Yang, G. Zhu, H. Wen, J. Zhang, X. Sun, H. Feng, W. Tian, X. Chen and Y. Yao, Sustainable Energy Fuels, 2020, Accepted Manuscript , DOI: 10.1039/C9SE01122F

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