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dc.contributor.authorChang, Yunghuang
dc.contributor.authorNikam, Revannath D.
dc.contributor.authorLin, Chengte
dc.contributor.authorHuang, Jingkai
dc.contributor.authorTseng, Chien-Chih
dc.contributor.authorHsu, Changlung
dc.contributor.authorCheng, Chiachin
dc.contributor.authorSu, Chingyuan
dc.contributor.authorLi, Lain-Jong
dc.contributor.authorChua, Daniel
dc.date.accessioned2015-08-03T12:10:44Z
dc.date.available2015-08-03T12:10:44Z
dc.date.issued2014-10-10
dc.identifier.issn19448244
dc.identifier.doi10.1021/am5039592
dc.identifier.urihttp://hdl.handle.net/10754/563805
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.
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.
dc.publisherAmerican Chemical Society (ACS)
dc.subjectelectrocatalyst
dc.subjecthydrogen evolution reaction
dc.subjectmolybdenium disulfide
dc.subjecttransition metal dichalcogenides
dc.titleEnhanced electrocatalytic activity of MoSx on TCNQ-treated electrode for hydrogen evolution reaction
dc.typeArticle
dc.contributor.departmentMaterial Science and Engineering Program
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.identifier.journalACS Applied Materials & Interfaces
dc.contributor.institutionDepartment of Material Science and Engineering, National University of SingaporeSingapore, Singapore
dc.contributor.institutionInstitute of Atomic and Molecular Sciences, Academia SinicaTaipei, Taiwan
dc.contributor.institutionDepartment of Chemistry, National Taiwan UniversityTaipei, Taiwan
dc.contributor.institutionNanoscience and Technology Program, Institute of Physics, Academia SinicaTaipei, Taiwan
dc.contributor.institutionKey Laboratory of Marine New Materials and Related Technology, Ningbo Institute of Material Technology and Engineering, Chinese Academy of SciencesNingbo, China
dc.contributor.institutionDepartment of Materials Science and Engineering, National Chiao Tung UniversityHsinChu, Taiwan
dc.contributor.institutionGraduate Institute of Energy Engineering, Department of Mechanical Engineering, National Central UniversityChung-Li, Taiwan
kaust.personLi, Lain-Jong
dc.date.published-online2014-10-10
dc.date.published-print2014-10-22


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