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Issue 2, 2018
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Nanocomposite of MoO2 and MoC loaded on porous carbon as an efficient electrocatalyst for hydrogen evolution reaction

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Abstract

The development of an effective, non-precious electrocatalyst for hydrogen evolution reaction (HER) is highly desirable for electrocatalytic water splitting and electrochemical/photoelectrochemical water splitting to produce hydrogen. Herein, a facile one-step ultrasonic spray pyrolysis method is developed for the synthesis of MoO2–MoC composite loaded on porous carbon (MoO2/MoC@C), and the MoO2/MoC@C is found to exhibit prominent catalytic activity in the HER. The overpotential required for a current density of 20 mA cm−2 is as small as 133 mV in 0.5 M H2SO4 and 203 mV in 1 M KOH for the MoO2/MoC@C, and the value is superiorly comparable to that of reported metal carbides. The MoO2/MoC@C can work stably both in acidic and basic solution over 30 h with 95% faradaic efficiency in 0.5 M H2SO4 and 93% in 1 M KOH. The synergic effect between MoO2 and MoC is suggested by density functional theory calculations.

Graphical abstract: Nanocomposite of MoO2 and MoC loaded on porous carbon as an efficient electrocatalyst for hydrogen evolution reaction

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Publication details

The article was received on 07 Nov 2017, accepted on 15 Dec 2017 and first published on 18 Dec 2017


Article type: Research Article
DOI: 10.1039/C7QI00689F
Citation: Inorg. Chem. Front., 2018,5, 446-453
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    Nanocomposite of MoO2 and MoC loaded on porous carbon as an efficient electrocatalyst for hydrogen evolution reaction

    C. Lv, Z. Huang, Q. Yang and C. Zhang, Inorg. Chem. Front., 2018, 5, 446
    DOI: 10.1039/C7QI00689F

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