Efficient hydrogen evolution by mechanically strained MoS2 nanosheets

Ji Hoon Lee, Woo Soon Jang, Sun Woong Han, Hong Koo Baik

Research output: Contribution to journalArticle

56 Citations (Scopus)

Abstract

We demonstrated correlations between mechanically bent tensile-strain- induced two-dimensional MoS2 nanosheets (NSs) and their electrochemical activities toward the hydrogen evolution reaction (HER). The tensile-strain-induced MoS2 NSs showed significantly steeper polarization curves and lower Tafel slopes than the strain-free ones, which is consistent with the simple d-band model. Furthermore, the mechanical strain increased the electrochemical activities of all the NSs toward the HER except those loaded with high MoS2 mass. Mechanically bending MoS 2 NSs to induce tensile strain enables the production of powerful, efficient electrocatalysis systems for evolving hydrogen.

Original languageEnglish
Pages (from-to)9866-9873
Number of pages8
JournalLangmuir
Volume30
Issue number32
DOIs
Publication statusPublished - 2014 Aug 19

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All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Spectroscopy
  • Electrochemistry

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