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Article: Comparative study on MoS2 and WS2 for electrocatalytic water splitting

TitleComparative study on MoS<inf>2</inf> and WS<inf>2</inf> for electrocatalytic water splitting
Authors
KeywordsMolybdenum disulfide
Tungsten disulfide
Hydrogen evolution reaction
Electrocatalytic reaction
Issue Date2013
Citation
International Journal of Hydrogen Energy, 2013, v. 38, n. 28, p. 12302-12309 How to Cite?
AbstractReplacing Pt by earth abundant catalysts is one of the most important tasks toward potential large-scale HER applications. Among many potential candidates, low cost and earth abundant transition metal dichalcogenides such as MoS and WS have been promising as good H evolution electrocatalysts when they are engineered into the structures with active sites. In this work, we have performed systematic studies on the catalytic reactivity of both MoS and WS materials produced by one-step and scalable thermolysis from (NH ) WS and (NH ) MoS precursors respectively. Structural analysis shows that these materials prepared at a higher thermolysis temperature exhibit higher crystallinity. The H evolution electrocatalysts efficiency for the MoS prepared at a lower temperature is higher than those at higher temperatures, where amorphous MoS or S 2- species instead of crystalline MoS is the main active site. By contrast, crystalline WS prepared at high temperature is identified to be the key reaction site. Both catalysts display excellent efficiency and durability as an electrocatalyst operating in acidic electrolytes. This work provides fundamental insights for further design and preparation of emergent metal dichalcogenide catalysts, beneficial for the development in clean energy. Copyright © 2012, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved. 2 2 2 2 2 4 2 4 4 2 4 2 2 2 2 2 2
Persistent Identifierhttp://hdl.handle.net/10722/298052
ISSN
2020 Impact Factor: 5.816
2015 SCImago Journal Rankings: 1.330

 

DC FieldValueLanguage
dc.contributor.authorChen, Tzu Yin-
dc.contributor.authorChang, Yung Huang-
dc.contributor.authorHsu, Chang Lung-
dc.contributor.authorWei, Kung Hwa-
dc.contributor.authorChiang, Chia Ying-
dc.contributor.authorLi, Lain Jong-
dc.date.accessioned2021-04-08T03:07:33Z-
dc.date.available2021-04-08T03:07:33Z-
dc.date.issued2013-
dc.identifier.citationInternational Journal of Hydrogen Energy, 2013, v. 38, n. 28, p. 12302-12309-
dc.identifier.issn0360-3199-
dc.identifier.urihttp://hdl.handle.net/10722/298052-
dc.description.abstractReplacing Pt by earth abundant catalysts is one of the most important tasks toward potential large-scale HER applications. Among many potential candidates, low cost and earth abundant transition metal dichalcogenides such as MoS and WS have been promising as good H evolution electrocatalysts when they are engineered into the structures with active sites. In this work, we have performed systematic studies on the catalytic reactivity of both MoS and WS materials produced by one-step and scalable thermolysis from (NH ) WS and (NH ) MoS precursors respectively. Structural analysis shows that these materials prepared at a higher thermolysis temperature exhibit higher crystallinity. The H evolution electrocatalysts efficiency for the MoS prepared at a lower temperature is higher than those at higher temperatures, where amorphous MoS or S 2- species instead of crystalline MoS is the main active site. By contrast, crystalline WS prepared at high temperature is identified to be the key reaction site. Both catalysts display excellent efficiency and durability as an electrocatalyst operating in acidic electrolytes. This work provides fundamental insights for further design and preparation of emergent metal dichalcogenide catalysts, beneficial for the development in clean energy. Copyright © 2012, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved. 2 2 2 2 2 4 2 4 4 2 4 2 2 2 2 2 2-
dc.languageeng-
dc.relation.ispartofInternational Journal of Hydrogen Energy-
dc.subjectMolybdenum disulfide-
dc.subjectTungsten disulfide-
dc.subjectHydrogen evolution reaction-
dc.subjectElectrocatalytic reaction-
dc.titleComparative study on MoS<inf>2</inf> and WS<inf>2</inf> for electrocatalytic water splitting-
dc.typeArticle-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.ijhydene.2013.07.021-
dc.identifier.scopuseid_2-s2.0-84883791178-
dc.identifier.volume38-
dc.identifier.issue28-
dc.identifier.spage12302-
dc.identifier.epage12309-
dc.identifier.issnl0360-3199-

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