Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/89608
Title: Electrochemical generation of sulfur vacancies in the basal plane of MoS2 for hydrogen evolution
Authors: Tsai, Charlie
Li, Hong
Park, Sangwook
Park, Joonsuk
Han, Hyun Soo
Nørskov, Jens K.
Zheng, Xiaolin
Abild-Pedersen, Frank
Keywords: Electrocatalysis
Hydrogen Fuel
Issue Date: 2017
Source: Tsai, C., Li, H., Park, S., Park, J., Han, H. S., Nørskov, J. K., et al. (2017). Electrochemical generation of sulfur vacancies in the basal plane of MoS2 for hydrogen evolution. Nature Communications, 8, 15113-.
Series/Report no.: Nature Communications
Abstract: Recently, sulfur (S)-vacancies created on the basal plane of 2H-molybdenum disulfide (MoS2) using argon plasma exposure exhibited higher intrinsic activity for the electrochemical hydrogen evolution reaction than the edge sites and metallic 1T-phase of MoS2 catalysts. However, a more industrially viable alternative to the argon plasma desulfurization process is needed. In this work, we introduce a scalable route towards generating S-vacancies on the MoS2 basal plane using electrochemical desulfurization. Even though sulfur atoms on the basal plane are known to be stable and inert, we find that they can be electrochemically reduced under accessible applied potentials. This can be done on various 2H-MoS2 nanostructures. By changing the applied desulfurization potential, the extent of desulfurization and the resulting activity can be varied. The resulting active sites are stable under extended desulfurization durations and show consistent HER activity.
URI: https://hdl.handle.net/10356/89608
http://hdl.handle.net/10220/44985
DOI: http://dx.doi.org/10.1038/ncomms15113
Rights: © 2017 The Author(s). This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
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metadata.item.fulltext: With Fulltext
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