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Hydrothermal synthesis of ternary MoS2xSe2(1-x) nanosheets for electrocatalytic hydrogen evolution

Abstract

Transition metal dichalcogenides have shown their promise as highly efficient hydrogen evolution reaction (HER) electrocatalysts. In this work, we demonstrate a one-pot hydrothermal synthesis of ternary 2H-MoS2xSe2(1-x) nanosheets for enhanced hydrogen production. Compared to pristine 2H-MoSe2 and 2H-MoS2, introduction of a third element can not only expand the interlayer spacing, but also provide more active catalytic sites and lower the charge transfer resistance. As a consequence, MoS2xSe2(1-x) exhibits a high electrocatalytic HER activity with a low overpotential of 188 mV vs. RHE to achieve a geometric current density of -10 mA cm-2 and a low Tafel slope of 43 mV dec-1 in 0.5 M H2SO4. This study provides valuable insights that ternary structure formation can be effective for the preparation of high-performance HER electrocatalysts.

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Publication details

The article was received on 19 Mar 2018, accepted on 04 Apr 2018 and first published on 09 Apr 2018


Article type: Research Article
DOI: 10.1039/C8QI00241J
Citation: Inorg. Chem. Front., 2018, Accepted Manuscript
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    Hydrothermal synthesis of ternary MoS2xSe2(1-x) nanosheets for electrocatalytic hydrogen evolution

    C. Zhen, B. Zhang, Y. Zhou, Y. Du and P. Xu, Inorg. Chem. Front., 2018, Accepted Manuscript , DOI: 10.1039/C8QI00241J

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