TY - JOUR
T1 - In-situ to ex-situ in-plane structure evolution of stern layers on Pt(111) surface
T2 - Surface X-ray scattering studies
AU - Kawaguchi, Tomoya
AU - Liu, Yihua
AU - Karapetrova, Evguenia A.
AU - Komanicky, Vladimir
AU - You, Hoydoo
N1 - Funding Information:
The X-ray and electrochemistry work and data analysis were supported by the U.S. Department of Energy (DOE), Office of Basic Energy Science (BES), Materials Sciences and Engineering Division and use of the APS was supported by DOE BES Scientific User Facilities Division , under Contract No. DE-AC02-06CH11357 . The work (VK) at Safarik University has been supported by grant VEGA No. 1/0204/18, the grant of the Slovak Research and Development Agency under the contract No. APVV-17-0059 . One of the authors (TK) thanks the Japanese Society for the Promotion of Science (JSPS) for JSPS Postdoctoral Fellowships for Research Abroad.
Publisher Copyright:
© 2020
PY - 2020/10/15
Y1 - 2020/10/15
N2 - 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.
AB - 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.
KW - Electrochemical double layer
KW - Hydrogen evolution reaction
KW - Pt(111)
KW - Stern layer
KW - Surface electrochemistry
KW - Surface X-ray scattering
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U2 - 10.1016/j.jelechem.2020.114495
DO - 10.1016/j.jelechem.2020.114495
M3 - Article
AN - SCOPUS:85089252912
SN - 1572-6657
VL - 875
JO - Journal of Electroanalytical Chemistry
JF - Journal of Electroanalytical Chemistry
M1 - 114495
ER -