In-situ to ex-situ in-plane structure evolution of stern layers on Pt(111) surface: Surface X-ray scattering studies

Tomoya Kawaguchi, Yihua Liu, Evguenia A. Karapetrova, Vladimir Komanicky, Hoydoo You

Research output: Contribution to journalArticlepeer-review

Abstract

In-situ to ex-situ evolution of the Cs+ in-plane structure in electrochemical Stern layers are investigated on Pt(111) surface with surface X-ray scattering studies. The Cs+ single-sublattice (2 × 2) structure of the Stern layer formed in situ in 0.1 M CsF electrolyte [Liu et al., J. Phys. Chem. Lett., 9 (2018) 1265] evolves eventually to the two-sublattice (2 × 2) structure upon emersion from the electrolyte. While the Cs+ layers maintain the (2 × 2) symmetry, the ex situ layer increases the density progressively over several minutes by incorporating Cs+ ions of the electrolyte during the emersion process.

Original languageEnglish
Article number114495
JournalJournal of Electroanalytical Chemistry
Volume875
DOIs
Publication statusPublished - 2020 Oct 15

Keywords

  • Electrochemical double layer
  • Hydrogen evolution reaction
  • Pt(111)
  • Stern layer
  • Surface X-ray scattering
  • Surface electrochemistry

ASJC Scopus subject areas

  • Analytical Chemistry
  • Chemical Engineering(all)
  • Electrochemistry

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