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Stoichiometry and surface structure dependence of hydrogen evolution reaction activity and stability of MoxC MXenes
Drexel Univ, PA 19104 USA.
Drexel Univ, PA 19104 USA.
Drexel Univ, PA 19104 USA.
Drexel Univ, PA 19104 USA.
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2019 (English)In: Journal of Catalysis, ISSN 0021-9517, E-ISSN 1090-2694, Vol. 371, p. 325-332Article in journal (Refereed) Published
Abstract [en]

The exploration of non-precious catalysts for the hydrogen evolution reaction (HER) remains critical in the commercialization of electrochemical energy storage and conversion technologies. Two-dimensional transitional metal carbides called MXenes have been found to have great potential as electrocatalysts for HER. In this work, we synthesize two molybdenum-based MXenes: Mo1.33CTz and Mo2CTz, and measure their HER activity and operational durability. The ordered divacancies on the basal planes of Mo1.33CTz cause a marked decrease in HER activity compared to Mo2CTz. The stoichiometry and atomic surface structure of MXenes is found to be critically important for catalytic activity while having less of an impact on operational durability. This work provides insight for the development of active 2D materials, in general and MXenes in particular for HER and other technologically relevant electrochemical reactions. (C) 2019 Elsevier Inc. All rights reserved.

Place, publisher, year, edition, pages
ACADEMIC PRESS INC ELSEVIER SCIENCE , 2019. Vol. 371, p. 325-332
Keywords [en]
MXenes; Hydrogen electrocatalysis; Fuel cells
National Category
Inorganic Chemistry
Identifiers
URN: urn:nbn:se:liu:diva-157566DOI: 10.1016/j.jcat.2019.01.037ISI: 000466251300036OAI: oai:DiVA.org:liu-157566DiVA, id: diva2:1328645
Note

Funding Agencies|NSF CBET-Catalysis [1602886]; Swedish Research Council [642-2013-8020]; Knut and Alice Wallenberg (KAW) Foundation; Swedish Foundation for Strategic Research (SSF) [EM16-0004]

Available from: 2019-06-22 Created: 2019-06-22 Last updated: 2019-11-25

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The full text will be freely available from 2021-02-26 13:35
Available from 2021-02-26 13:35

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CiteExportLink to record
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Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
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  • Other style
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Language
  • de-DE
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