journal article·2023-06-09

Alloyed RexMo1 – xS2 Nanoflakes with Enlarged Interlayer Distances for Hydrogen Evolution

Jing Li, René Hübner, Marielle Deconinck, Ankita Bora, Markus Göbel, Dana Schwarz, Guangbo Chen, Guangzhao Wang, Shengyuan A. Yang, Yana Vaynzof, Vladimir Lesnyak

ACS Applied Nano Materials· Volume 6· Issue 11
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Abstract

Molybdenum sulfide (MoS 2 ) has attracted significant attention due to its great potential as a low-cost and efficient catalyst for the hydrogen evolution reaction. Developing a facile, easily upscalable, and inexpensive approach to produce catalytically active nanostructured MoS 2 with a high yield would significantly advance its practical application. Colloidal synthesis offers several advantages over other preparation techniques to overcome the low reaction yield of exfoliation and drawbacks of expensive equipment and processes used in chemical vapor deposition. In this work, we report an efficient synthesis of alloyed Re x Mo 1– x S 2 nanoflakes with an enlarged interlayer distance, among which the composition Re 0.55 Mo 0.45 S 2 exhibits excellent catalytic performance with overpotentials as low as 79 mV at 10 mA/cm 2 and a small Tafel slope of 42 mV/dec. Density functional theory calculations prove that enlarging the distance between layers in the Re x Mo 1– x S 2 alloy can greatly improve its catalytic performance due to a significantly reduced free energy of hydrogen adsorption. The developed approach paves the way to design advanced transition metal dichalcogenide-based catalysts for hydrogen evolution and to promote their large-scale practical application.
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Research context

OpenAlex topics: Electrocatalysts for Energy Conversion · Chalcogenide Semiconductor Thin Films · 2D Materials and Applications

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Physical Chemistry, TU Dresden, Zellescher Weg 19, Dresden, 01069 Sachsen, Germany

Institute of Ion Beam Physics and Materials Research, Helmholtz-Zentrum Dresden-Rossendorf e.V., Bautzner Landstrasse 400, Dresden, 01328 Sachsen, Germany

Chair for Emerging Electronic Technologies, TU Dresden, Nöthnitzer Str. 61, Dresden, 01187 Sachsen, Germany

Leibniz-Institute for Solid State and Materials Research Dresden, Helmholtzstraße 20, Dresden, 01069 Sachsen, Germany

Electrochemistry, TU Dresden, Zellescher Weg 19, Dresden, 01069 Sachsen, Germany

Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Straße 6, Dresden, 01069 Sachsen, Germany

Center for Advancing Electronics Dresden (cfaed) and Faculty of Chemistry and Food Chemistry, TU Dresden, Stadtgutstr. 59, Dresden, 01062 Dresden, Germany

Key Laboratory of Extraordinary Bond Engineering and Advanced Materials Technology of Chongqing, School of Electronic Information Engineering, Yangtze Normal University, 16 Juxian Road, Fuling district, 408100 Chongqing, China

Research Laboratory for Quantum Materials, Singapore University of Technology and Design, 8 Somapah Road, Singapore 487372, Singapore

Funding

Bundesministerium f?r Bildung und Forschung · Technische Universit?t Dresden · China Scholarship Council · H2020 European Research Council

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