Three-Dimensional Heterostructures of MoS 2 Nanosheets on Conducting MoO 2 as an Efficient Electrocatalyst To Enhance Hydrogen Evolution Reaction

Handle URI:
http://hdl.handle.net/10754/622360
Title:
Three-Dimensional Heterostructures of MoS 2 Nanosheets on Conducting MoO 2 as an Efficient Electrocatalyst To Enhance Hydrogen Evolution Reaction
Authors:
Nikam, Revannath Dnyandeo; Lu, Ang-Yu; Sonawane, Poonam Ashok; Kumar, U. Rajesh; Yadav, Kanchan; Li, Lain-Jong ( 0000-0002-4059-7783 ) ; Chen, Yit Tsong
Abstract:
Molybdenum disulfide (MoS) is a promising catalyst for hydrogen evolution reaction (HER) because of its unique nature to supply active sites in the reaction. However, the low density of active sites and their poor electrical conductivity have limited the performance of MoS in HER. In this work, we synthesized MoS nanosheets on three-dimensional (3D) conductive MoO via a two-step chemical vapor deposition (CVD) reaction. The 3D MoO structure can create structural disorders in MoS nanosheets (referred to as 3D MoS/MoO), which are responsible for providing the superior HER activity by exposing tremendous active sites of terminal disulfur of S2 (in MoS) as well as the backbone conductive oxide layer (of MoO) to facilitate an interfacial charge transport for the proton reduction. In addition, the MoS nanosheets could protect the inner MoO core from the acidic electrolyte in the HER. The high activity of the as-synthesized 3D MoS/MoO hybrid material in HER is attributed to the small onset overpotential of 142 mV, a largest cathodic current density of 85 mA cm, a low Tafel slope of 35.6 mV dec, and robust electrochemical durability.
KAUST Department:
Physical Sciences and Engineering (PSE) Division
Citation:
Nikam RD, Lu A-Y, Sonawane PA, Kumar UR, Yadav K, et al. (2015) Three-Dimensional Heterostructures of MoS2Nanosheets on Conducting MoO2as an Efficient Electrocatalyst To Enhance Hydrogen Evolution Reaction. ACS Applied Materials & Interfaces 7: 23328–23335. Available: http://dx.doi.org/10.1021/acsami.5b07960.
Publisher:
American Chemical Society (ACS)
Journal:
ACS Applied Materials & Interfaces
Issue Date:
5-Oct-2015
DOI:
10.1021/acsami.5b07960
PubMed ID:
26436769
Type:
Article
ISSN:
1944-8244; 1944-8252
Sponsors:
This work was partially supported by the Ministry of Science and Technology (MOST) of Taiwan under MOST 103-2627-M-002-009 and 103-2113-M-002-014-MY3.
Appears in Collections:
Articles; Physical Sciences and Engineering (PSE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorNikam, Revannath Dnyandeoen
dc.contributor.authorLu, Ang-Yuen
dc.contributor.authorSonawane, Poonam Ashoken
dc.contributor.authorKumar, U. Rajeshen
dc.contributor.authorYadav, Kanchanen
dc.contributor.authorLi, Lain-Jongen
dc.contributor.authorChen, Yit Tsongen
dc.date.accessioned2017-01-02T09:28:26Z-
dc.date.available2017-01-02T09:28:26Z-
dc.date.issued2015-10-05en
dc.identifier.citationNikam RD, Lu A-Y, Sonawane PA, Kumar UR, Yadav K, et al. (2015) Three-Dimensional Heterostructures of MoS2Nanosheets on Conducting MoO2as an Efficient Electrocatalyst To Enhance Hydrogen Evolution Reaction. ACS Applied Materials & Interfaces 7: 23328–23335. Available: http://dx.doi.org/10.1021/acsami.5b07960.en
dc.identifier.issn1944-8244en
dc.identifier.issn1944-8252en
dc.identifier.pmid26436769en
dc.identifier.doi10.1021/acsami.5b07960en
dc.identifier.urihttp://hdl.handle.net/10754/622360-
dc.description.abstractMolybdenum disulfide (MoS) is a promising catalyst for hydrogen evolution reaction (HER) because of its unique nature to supply active sites in the reaction. However, the low density of active sites and their poor electrical conductivity have limited the performance of MoS in HER. In this work, we synthesized MoS nanosheets on three-dimensional (3D) conductive MoO via a two-step chemical vapor deposition (CVD) reaction. The 3D MoO structure can create structural disorders in MoS nanosheets (referred to as 3D MoS/MoO), which are responsible for providing the superior HER activity by exposing tremendous active sites of terminal disulfur of S2 (in MoS) as well as the backbone conductive oxide layer (of MoO) to facilitate an interfacial charge transport for the proton reduction. In addition, the MoS nanosheets could protect the inner MoO core from the acidic electrolyte in the HER. The high activity of the as-synthesized 3D MoS/MoO hybrid material in HER is attributed to the small onset overpotential of 142 mV, a largest cathodic current density of 85 mA cm, a low Tafel slope of 35.6 mV dec, and robust electrochemical durability.en
dc.description.sponsorshipThis work was partially supported by the Ministry of Science and Technology (MOST) of Taiwan under MOST 103-2627-M-002-009 and 103-2113-M-002-014-MY3.en
dc.publisherAmerican Chemical Society (ACS)en
dc.subject3D heterostructuresen
dc.subject3D MoO2 conductive coreen
dc.subjectCVD growthen
dc.subjectelectrocatalysten
dc.subjecthydrogen evolution reactionen
dc.subjectMoS2 nanosheetsen
dc.titleThree-Dimensional Heterostructures of MoS 2 Nanosheets on Conducting MoO 2 as an Efficient Electrocatalyst To Enhance Hydrogen Evolution Reactionen
dc.typeArticleen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.identifier.journalACS Applied Materials & Interfacesen
dc.contributor.institutionDepartment of Chemistry, National Taiwan University, Taipei, 106, Taiwanen
dc.contributor.institutionInstitute of Atomic and Molecular Sciences, Academia Sinica, Taipei, 106, Taiwanen
dc.contributor.institutionNanoscience and Technology Program, Taiwan International Graduate Program, Academia Sinica, Taipei, 115, Taiwanen
dc.contributor.institutionInstitute of Chemistry, Academia Sinica, Taipei, 115, Taiwanen
dc.contributor.institutionDepartment of Applied Chemistry, National Chiao-Tung University, Hsinchu, 300, Taiwanen
kaust.authorLu, Ang-Yuen
kaust.authorLi, Lain-Jongen

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