Sulfur poisoning of emergent and current electrocatalysts: Vulnerability of MoS2, and direct correlation to Pt hydrogen evolution reaction kinetics

Shu Min Tan, Zdeněk Sofer, Martin Pumera

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

The recent surge in interest in the utilisation of transition metal dichalcogenides for the hydrogen evolution reaction (HER), as well as the long-standing problem of sulfur poisoning suffered by the established Pt HER electrocatalyst, motivated us to examine the impacts of sulfur poisoning on both emergent and current electrocatalysts. Through a comparative study between MoS2 and Pt/C on the effects of sulfur poisoning, we demonstrate that MoS2 is not invulnerable to poisoning. Additionally, using X-ray photoelectron spectroscopy, correlations have also been established between the atomic percentages of Pt-S bonds and normalised HER parameters e.g. Tafel slope and potential at -10 mA cm-2. These findings are of high importance for potential hydrogen evolution catalysis. This journal is

Original languageEnglish
Pages (from-to)8879-8883
Number of pages5
JournalNanoscale
Volume7
Issue number19
DOIs
Publication statusPublished - 2015 May 21

All Science Journal Classification (ASJC) codes

  • Materials Science(all)

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