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Electrochemical sulfidation of WS 2 nanoarrays: Strong dependence of hydrogen evolution activity on transition metal sulfide surface composition

Daniel Escalera-López, Ross Griffin, Mark Isaacs, Karen Wilson, Richard Palmer Orcid Logo, Neil V. Rees

Electrochemistry Communications, Volume: 81, Pages: 106 - 111

Swansea University Author: Richard Palmer Orcid Logo

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DOI (Published version): 10.1016/j.elecom.2017.06.016

Abstract

The activity of transition metal sulfides for the hydrogen evolution reaction (HER) can be increased by sulfur-enrichment of active metal-sulfide sites. In this report, we investigate the electrochemical sulfidation of atmospherically aged WS2 nanoarrays with respect to enhancing HER activity. In co...

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Published in: Electrochemistry Communications
ISSN: 1388-2481
Published: 2017
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URI: https://cronfa.swan.ac.uk/Record/cronfa35839
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first_indexed 2017-09-29T19:01:36Z
last_indexed 2018-02-09T05:27:29Z
id cronfa35839
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spelling 2017-09-29T12:51:13.9718855 v2 35839 2017-09-29 Electrochemical sulfidation of WS 2 nanoarrays: Strong dependence of hydrogen evolution activity on transition metal sulfide surface composition 6ae369618efc7424d9774377536ea519 0000-0001-8728-8083 Richard Palmer Richard Palmer true false 2017-09-29 MECH The activity of transition metal sulfides for the hydrogen evolution reaction (HER) can be increased by sulfur-enrichment of active metal-sulfide sites. In this report, we investigate the electrochemical sulfidation of atmospherically aged WS2 nanoarrays with respect to enhancing HER activity. In contrast to MoS2, it is found that sulfidation diminishes HER activity. Electrochemical and XPS experiments suggest the involvement of insoluble tungsten oxides in the altered HER and electron transfer properties. This demonstrates the strong dependence of the transition metal dichalcogenide (TMD) composition with the successful sulfur incorporation and subsequent HER activity. Journal Article Electrochemistry Communications 81 106 111 1388-2481 Transition metal dichalcogenidesHydrogen evolutionSulfidationTungsten disulfideNanoarrays 31 12 2017 2017-12-31 10.1016/j.elecom.2017.06.016 COLLEGE NANME Mechanical Engineering COLLEGE CODE MECH Swansea University 2017-09-29T12:51:13.9718855 2017-09-29T12:48:04.3817652 Faculty of Science and Engineering School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Mechanical Engineering Daniel Escalera-López 1 Ross Griffin 2 Mark Isaacs 3 Karen Wilson 4 Richard Palmer 0000-0001-8728-8083 5 Neil V. Rees 6 0035839-29092017125045.pdf escalera-lopez2017.pdf 2017-09-29T12:50:45.7200000 Output 963098 application/pdf Version of Record true 2017-09-29T00:00:00.0000000 false eng
title Electrochemical sulfidation of WS 2 nanoarrays: Strong dependence of hydrogen evolution activity on transition metal sulfide surface composition
spellingShingle Electrochemical sulfidation of WS 2 nanoarrays: Strong dependence of hydrogen evolution activity on transition metal sulfide surface composition
Richard Palmer
title_short Electrochemical sulfidation of WS 2 nanoarrays: Strong dependence of hydrogen evolution activity on transition metal sulfide surface composition
title_full Electrochemical sulfidation of WS 2 nanoarrays: Strong dependence of hydrogen evolution activity on transition metal sulfide surface composition
title_fullStr Electrochemical sulfidation of WS 2 nanoarrays: Strong dependence of hydrogen evolution activity on transition metal sulfide surface composition
title_full_unstemmed Electrochemical sulfidation of WS 2 nanoarrays: Strong dependence of hydrogen evolution activity on transition metal sulfide surface composition
title_sort Electrochemical sulfidation of WS 2 nanoarrays: Strong dependence of hydrogen evolution activity on transition metal sulfide surface composition
author_id_str_mv 6ae369618efc7424d9774377536ea519
author_id_fullname_str_mv 6ae369618efc7424d9774377536ea519_***_Richard Palmer
author Richard Palmer
author2 Daniel Escalera-López
Ross Griffin
Mark Isaacs
Karen Wilson
Richard Palmer
Neil V. Rees
format Journal article
container_title Electrochemistry Communications
container_volume 81
container_start_page 106
publishDate 2017
institution Swansea University
issn 1388-2481
doi_str_mv 10.1016/j.elecom.2017.06.016
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Mechanical Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Mechanical Engineering
document_store_str 1
active_str 0
description The activity of transition metal sulfides for the hydrogen evolution reaction (HER) can be increased by sulfur-enrichment of active metal-sulfide sites. In this report, we investigate the electrochemical sulfidation of atmospherically aged WS2 nanoarrays with respect to enhancing HER activity. In contrast to MoS2, it is found that sulfidation diminishes HER activity. Electrochemical and XPS experiments suggest the involvement of insoluble tungsten oxides in the altered HER and electron transfer properties. This demonstrates the strong dependence of the transition metal dichalcogenide (TMD) composition with the successful sulfur incorporation and subsequent HER activity.
published_date 2017-12-31T03:44:45Z
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score 11.037603

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