Electrokinetic Streaming Current Method to Probe Polycrystalline Gold Electrode-Electrolyte Interface Under Applied Potentials
Electrokinetic Streaming Current Method to Probe Polycrystalline Gold Electrode-Electrolyte Interface Under Applied Potentials
复制标题
动电流法探测外加电位下多晶金电极-电解质界面
DOI:
10.1149/1945-7111/abf4aa
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发表时间:
2021
影响因子:
3.9
通讯作者:
Zenyuk, Iryna V.
中科院分区:
文献类型:
--
作者:
Saha, Prantik;Zenyuk, Iryna V.
We developed a method, by combining electrochemical and electrokinetic streaming current techniques to study ion distribution and ionic conductivity in the diffuse part of electrochemical double layer (EDL) of a metal-electrolyte interface, when potential is applied on the metal by a potentiostat. We applied this method to an electrochemically clean polycrystalline gold (poly Au)-electrolyte interface and measured zeta potential for various applied potentials, pH, and concentration of the electrolyte. Specific adsorption of chloride ions on poly Au was studied by comparing measurements of zeta potential in KCl and KClO 4 electrolytes. In absence of specific adsorption, zeta potential was found to increase linearly with applied potential, having slope of 0.04–0.06. When Cl− adsorption occurs, zeta potential changes the sign from positive to negative value at∼ 750 mV vs Ag/AgCl applied potential. Complementary cyclic voltammetry and X-ray photoelectron spectroscopy studies were conducted to determine a degree of chloride ion adsorption on a poly Au. A correlation was observed between the applied potential at which zeta potential is zero and potential of zero charge for poly Au. Ion-distribution and ionic conductivity in the diffuse layer were calculated from the measured zeta potential data using nonlinear Poisson-Boltzmann distribution.
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DOI:
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发表时间:
1982
期刊:
影响因子:
--
作者:
J. Lecoeur;J. Andro;R. Parsons
通讯作者:
R. Parsons
DOI:
--
发表时间:
1983
期刊:
影响因子:
--
作者:
G. Horányi;E. M. Rizmayer;P. Joó
通讯作者:
P. Joó
影响因子:
--
作者:
Ataka, K;Yotsuyanagi, T;Osawa, M
通讯作者:
Osawa, M
DOI:
--
发表时间:
1996
期刊:
影响因子:
--
作者:
A. Kolics;Aliston E. Thomas;A. Wiȩckowski
通讯作者:
A. Wiȩckowski
DOI:
--
发表时间:
1976
期刊:
影响因子:
--
作者:
A. Hamelin;J. Lecoeur
通讯作者:
J. Lecoeur