Enhanced electrocatalytic activity of MoSx on TCNQ-treated electrode for hydrogen evolution reaction

Handle URI:
http://hdl.handle.net/10754/563805
Title:
Enhanced electrocatalytic activity of MoSx on TCNQ-treated electrode for hydrogen evolution reaction
Authors:
Chang, Yunghuang; Nikam, Revannath D.; Lin, Chengte; Huang, Jingkai; Tseng, Chienchih; Hsu, Changlung; Cheng, Chiachin; Su, Chingyuan; Li, Lain-Jong ( 0000-0002-4059-7783 ) ; Chua, Daniel
Abstract:
Molybdenum sulfide has recently attracted much attention because of its low cost and excellent catalytical effects in the application of hydrogen evolution reaction (HER). To improve the HER efficiency, many researchers have extensively explored various avenues such as material modification, forming hybrid structures or modifying geometric morphology. In this work, we reported a significant enhancement in the electrocatalytic activity of the MoSx via growing on Tetracyanoquinodimethane (TCNQ) treated carbon cloth, where the MoSx was synthesized by thermolysis from the ammonium tetrathiomolybdate ((NH4)2MoS4) precursor at 170 °C. The pyridinic N- and graphitic N-like species on the surface of carbon cloth arising from the TCNQ treatment facilitate the formation of Mo5+ and S2 2- species in the MoSx, especially with S2 2- serving as an active site for HER. In addition, the smaller particle size of the MoSx grown on TCNQ-treated carbon cloth reveals a high ratio of edge sites relative to basal plane sites, indicating the richer effective reaction sites and superior electrocatalytic characteristics. Hence, we reported a high hydrogen evolution rate for MoSx on TCNQ-treated carbon cloth of 6408 mL g-1 cm-2 h-1 (286 mmol g-1 cm-2 h-1) at an overpotential of V = 0.2 V. This study provides the fundamental concepts useful in the design and preparation of transition metal dichalcogenide catalysts, beneficial in the development in clean energy.
KAUST Department:
Physical Sciences and Engineering (PSE) Division; Materials Science and Engineering Program
Publisher:
American Chemical Society (ACS)
Journal:
ACS Applied Materials & Interfaces
Issue Date:
22-Oct-2014
DOI:
10.1021/am5039592
Type:
Article
ISSN:
19448244
Sponsors:
This research was supported by National Research Foundation, Prime Minister's Office, Singapore, under its Competitive Research Programme (CRP Award No. NRF-CRP 10-2012-6), Academia Sinica (IAMS and Nano program), and National Science Council Taiwan (NSC-99-2112-M-001-021-MY3). J.L. thanks the support from AOARD-134137.
Appears in Collections:
Articles; Physical Sciences and Engineering (PSE) Division; Materials Science and Engineering Program

Full metadata record

DC FieldValue Language
dc.contributor.authorChang, Yunghuangen
dc.contributor.authorNikam, Revannath D.en
dc.contributor.authorLin, Chengteen
dc.contributor.authorHuang, Jingkaien
dc.contributor.authorTseng, Chienchihen
dc.contributor.authorHsu, Changlungen
dc.contributor.authorCheng, Chiachinen
dc.contributor.authorSu, Chingyuanen
dc.contributor.authorLi, Lain-Jongen
dc.contributor.authorChua, Danielen
dc.date.accessioned2015-08-03T12:10:44Zen
dc.date.available2015-08-03T12:10:44Zen
dc.date.issued2014-10-22en
dc.identifier.issn19448244en
dc.identifier.doi10.1021/am5039592en
dc.identifier.urihttp://hdl.handle.net/10754/563805en
dc.description.abstractMolybdenum sulfide has recently attracted much attention because of its low cost and excellent catalytical effects in the application of hydrogen evolution reaction (HER). To improve the HER efficiency, many researchers have extensively explored various avenues such as material modification, forming hybrid structures or modifying geometric morphology. In this work, we reported a significant enhancement in the electrocatalytic activity of the MoSx via growing on Tetracyanoquinodimethane (TCNQ) treated carbon cloth, where the MoSx was synthesized by thermolysis from the ammonium tetrathiomolybdate ((NH4)2MoS4) precursor at 170 °C. The pyridinic N- and graphitic N-like species on the surface of carbon cloth arising from the TCNQ treatment facilitate the formation of Mo5+ and S2 2- species in the MoSx, especially with S2 2- serving as an active site for HER. In addition, the smaller particle size of the MoSx grown on TCNQ-treated carbon cloth reveals a high ratio of edge sites relative to basal plane sites, indicating the richer effective reaction sites and superior electrocatalytic characteristics. Hence, we reported a high hydrogen evolution rate for MoSx on TCNQ-treated carbon cloth of 6408 mL g-1 cm-2 h-1 (286 mmol g-1 cm-2 h-1) at an overpotential of V = 0.2 V. This study provides the fundamental concepts useful in the design and preparation of transition metal dichalcogenide catalysts, beneficial in the development in clean energy.en
dc.description.sponsorshipThis research was supported by National Research Foundation, Prime Minister's Office, Singapore, under its Competitive Research Programme (CRP Award No. NRF-CRP 10-2012-6), Academia Sinica (IAMS and Nano program), and National Science Council Taiwan (NSC-99-2112-M-001-021-MY3). J.L. thanks the support from AOARD-134137.en
dc.publisherAmerican Chemical Society (ACS)en
dc.subjectelectrocatalysten
dc.subjecthydrogen evolution reactionen
dc.subjectmolybdenium disulfideen
dc.subjecttransition metal dichalcogenidesen
dc.titleEnhanced electrocatalytic activity of MoSx on TCNQ-treated electrode for hydrogen evolution reactionen
dc.typeArticleen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.contributor.departmentMaterials Science and Engineering Programen
dc.identifier.journalACS Applied Materials & Interfacesen
dc.contributor.institutionDepartment of Material Science and Engineering, National University of SingaporeSingapore, Singaporeen
dc.contributor.institutionInstitute of Atomic and Molecular Sciences, Academia SinicaTaipei, Taiwanen
dc.contributor.institutionDepartment of Chemistry, National Taiwan UniversityTaipei, Taiwanen
dc.contributor.institutionNanoscience and Technology Program, Institute of Physics, Academia SinicaTaipei, Taiwanen
dc.contributor.institutionKey Laboratory of Marine New Materials and Related Technology, Ningbo Institute of Material Technology and Engineering, Chinese Academy of SciencesNingbo, Chinaen
dc.contributor.institutionDepartment of Materials Science and Engineering, National Chiao Tung UniversityHsinChu, Taiwanen
dc.contributor.institutionGraduate Institute of Energy Engineering, Department of Mechanical Engineering, National Central UniversityChung-Li, Taiwanen
kaust.authorLi, Lain-Jongen
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