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Issue 17, 2018
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One-dimensional hierarchical MoO2–MoSx hybrids as highly active and durable catalysts in the hydrogen evolution reaction

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Abstract

The hydrogen evolution reaction (HER) is a fundamental process in electrocatalysis and plays an important role in energy conversion through water splitting to produce hydrogen. Finding highly effective and scalable HER catalysts is becoming a very urgent task. In this work, we developed a facile method to synthesize a one-dimensional hierarchical MoO2–MoSx hybrid electrocatalyst via the calcination of a one-dimensional (1D) organic–inorganic MoO3–EDA precursor. The obtained MoO2–MoSx hybrids deliver a low onset potential of 155 mV, a low Tafel slope of 51.6 mV dec−1 and excellent cycling stability in acidic electrolytes, suggesting high electrocatalytic activity. Furthermore, MoO2–MoS2 exhibited high cycling stability even after 10 h of continuous operation under high overpotential; the current density still remained unchanged. The enhanced HER performances are likely due to high conductivity and more exposed active sites and the effective integration of MoO2 and MoSx. In a word, these results fully demonstrated that 1D nanostructured MoO2–MoSx hybrid materials may have great potential in future clean energy applications.

Graphical abstract: One-dimensional hierarchical MoO2–MoSx hybrids as highly active and durable catalysts in the hydrogen evolution reaction

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Publication details

The article was received on 28 Feb 2018, accepted on 25 Mar 2018 and first published on 26 Mar 2018


Article type: Paper
DOI: 10.1039/C8DT00779A
Citation: Dalton Trans., 2018,47, 6041-6048
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    One-dimensional hierarchical MoO2–MoSx hybrids as highly active and durable catalysts in the hydrogen evolution reaction

    Y. Qiu, L. Chai, Y. Su, P. Li, W. Yuan, H. Li and X. Guo, Dalton Trans., 2018, 47, 6041
    DOI: 10.1039/C8DT00779A

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