Issue 6, 2018

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

Abstract

Transition metal dichalcogenides have shown 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 not only expands the interlayer spacing, but also provides more active catalytic sites and lowers the charge transfer resistance. As a consequence, MoS2xSe2(1−x) exhibits a high electrocatalytic HER activity with a low overpotential of 188 mV vs. a 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.

Graphical abstract: Hydrothermal synthesis of ternary MoS2xSe2(1−x) nanosheets for electrocatalytic hydrogen evolution

Supplementary files

Article information

Article type
Research Article
Submitted
19 Mar 2018
Accepted
04 Apr 2018
First published
09 Apr 2018

Inorg. Chem. Front., 2018,5, 1386-1390

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, 5, 1386 DOI: 10.1039/C8QI00241J

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