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  MoS2 on topological insulator Bi2Te3 thin films: Activation of the basal plane for hydrogen reduction

Li, G., Huang, J., Yang, Q., Zhang, L., Mu, Q., Sun, Y., et al. (2021). MoS2 on topological insulator Bi2Te3 thin films: Activation of the basal plane for hydrogen reduction. Journal of Energy Chemistry, 62, 516-522. doi:10.1016/j.jechem.2021.04.010.

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Genre: Journal Article
Alternative Title : Journal of Energy Chemistry

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 Creators:
Li, Guowei1, Author              
Huang, Jue2, Author
Yang, Qun1, Author              
Zhang, Liguo1, Author              
Mu, Qingge1, Author              
Sun, Yan1, Author              
Parkin, Stuart2, Author
Chang, Kai2, Author
Felser, Claudia3, Author              
Affiliations:
1Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863425              
2External Organizations, ou_persistent22              
3Claudia Felser, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863429              

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Free keywords: Electron transfer, Hydrogen evolution, MoS2, Surface states, Topological insulator
 Abstract: 2H-MoS2 is a well-studied and promising non-noble metal electrocatalyst for heterogeneous reactions, such as the hydrogen evolution reaction (HER). The performance is largely limited by the chemically inert basal plane, which is unfavorable for surface adsorption and reactions. Herein, we report a facile method to boost the HER activities of 2H-MoS2 by coupling with epitaxial Bi2Te3 topological insulator films. The as-obtained MoS2/ Bi2Te3/SrTiO3 catalyst exhibits prominent HER catalytic activities compared to that of pure MoS2 structures, with a 189 mV decrease in the overpotential required to reach a current density of 10 mA cm−2 and a low Tafel slope of 58 mV dec−1. Theoretical investigations suggest that the enhanced catalytic activity originates from the charge redistribution at the interface between the Bi2Te3topological insulator films and the MoS2 layer. The delocalized sp-derived topological surface states could denote electrons to the MoS2 layer and activate the basal plane for hydrogen adsorption. This study demonstrates the potential of manipulating topological surface states to design high-performance electrocatalysts. © 2021 Science Press

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Language(s): eng - English
 Dates: 2021-04-232021-04-23
 Publication Status: Published in print
 Pages: -
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 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.1016/j.jechem.2021.04.010
 Degree: -

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Title: Journal of Energy Chemistry
  Abbreviation : J. Energy Chem.
Source Genre: Journal
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Publ. Info: Amsterdam, The Netherlands : Elsevier BV
Pages: - Volume / Issue: 62 Sequence Number: - Start / End Page: 516 - 522 Identifier: ISSN: 20954956
CoNE: https://pure.mpg.de/cone/journals/resource/20954956