MoSe2-Ni3Se4 Hybrid Nanoelectrocatalysts and Their Enhanced Electrocatalytic Activity for Hydrogen Evolution Reaction

Pengyuan Wu; Gangyong Sun; Yuanzhi Chen; Wanjie Xu; Hongfei Zheng; Jin Xu; Laisen Wang; Dong-Liang Peng

doi:10.1186/s11671-020-03368-z

Nanoscale Research Letters (Jun 2020)

MoSe2-Ni3Se4 Hybrid Nanoelectrocatalysts and Their Enhanced Electrocatalytic Activity for Hydrogen Evolution Reaction

Pengyuan Wu,
Gangyong Sun,
Yuanzhi Chen,
Wanjie Xu,
Hongfei Zheng,
Jin Xu,
Laisen Wang,
Dong-Liang Peng

Affiliations

Pengyuan Wu: Department of Materials Science and Engineering, Collaborative Innovation Center of Chemistry for Energy Materials, College of Materials, Xiamen University
Gangyong Sun: Department of Materials Science and Engineering, Collaborative Innovation Center of Chemistry for Energy Materials, College of Materials, Xiamen University
Yuanzhi Chen: Department of Materials Science and Engineering, Collaborative Innovation Center of Chemistry for Energy Materials, College of Materials, Xiamen University
Wanjie Xu: Department of Materials Science and Engineering, Collaborative Innovation Center of Chemistry for Energy Materials, College of Materials, Xiamen University
Hongfei Zheng: Department of Materials Science and Engineering, Collaborative Innovation Center of Chemistry for Energy Materials, College of Materials, Xiamen University
Jin Xu: Department of Materials Science and Engineering, Collaborative Innovation Center of Chemistry for Energy Materials, College of Materials, Xiamen University
Laisen Wang: Department of Materials Science and Engineering, Collaborative Innovation Center of Chemistry for Energy Materials, College of Materials, Xiamen University
Dong-Liang Peng: Department of Materials Science and Engineering, Collaborative Innovation Center of Chemistry for Energy Materials, College of Materials, Xiamen University

DOI: https://doi.org/10.1186/s11671-020-03368-z
Journal volume & issue: Vol. 15, no. 1
pp. 1 – 10

Abstract

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Abstract Combining MoSe2 with other transition metal dichalcogenides to form a hybrid nanostructure is an effective route to enhance the electrocatalytic activities for hydrogen evolution reaction (HER). In this study, MoSe2-Ni3Se4 hybrid nanoelectrocatalysts with a flower-like morphology are synthesized by a seed-induced solution approach. Instead of independently nucleating to form separate nanocrystals, the Ni3Se4 component tends to nucleate and grow on the surfaces of ultrathin nanoflakes of MoSe2 to form a hybrid nanostructure. MoSe2–Ni3Se4 hybrid nanoelectrocatalysts with different Mo:Ni ratios are prepared and their HER catalytic activities are compared. The results show that the HER activities are affected by the Mo:Ni ratios. In comparison with pure MoSe2, the MoSe2-Ni3Se4 hybrid nanoelectrocatalysts having a Mo:Ni molar ratio of 2:1 exhibit enhanced HER properties with an overpotential of 203 mV at 10 mA/cm2 and a Tafel slope of 57 mV per decade. Improved conductivity and increased turnover frequencies (TOFs) are also observed for the MoSe2-Ni3Se4 hybrid samples.

Published in Nanoscale Research Letters

ISSN: 1931-7573 (Print); 1556-276X (Online)
Publisher: SpringerOpen
Country of publisher: United Kingdom
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering: Materials of engineering and construction. Mechanics of materials
Website: https://www.springer.com/journal/11671

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