Impedance measurements of the underpotential deposition of Pb2+ and Tl+ on single crystal Ag surfaces

doi:10.1016/0013-4686(82)80064-9

Electrochimica Acta

Volume 27, Issue 1, January 1982, Pages 83-87

https://doi.org/10.1016/0013-4686(82)80064-9 Get rights and content

Abstract

Investigations of metal ion adsorption in the underpotential region were carried out with the aid of the alternating voltage method. To this end the impedance behaviour of the system Ag (100)/Tl⁺, Ag(100)/Pb²⁺, Ag(110)/Tl⁺ and Ag(110)/Pb²⁺ at different potentials in the underpotential region in the frequency range of 100 mHz to 10 kHz was studied.

Analysis of the electrode impedance shows that the adsorption of Pb²⁺ can be interpreted on the basis of a simple Dolin-Ershler model with accompanying diffusion. For Tl⁺ adsorption more complicated model is necessary with fast transfer at line inhomogeneities and slow transfer at homogeneous surface regions.

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Impedance measurements of the underpotential deposition of Pb2+ and Tl+ on single crystal Ag surfaces

Abstract

J. electroanal. Chem.

J. electroanal. Chem.

J. electroanal. Chem.

J. electroanal. Chem.

Electrochim. Acta

J. electroanal. Chem.

Electrochim. Acta

Electrochim. Acta

Electrochim. Acta

Electrochim. Acta

Electrochim. Acta

Faraday Symp. Chem. Soc.

Faraday Symp. Chem. Soc.

Electrochim. Acta

Impedance measurements of the underpotential deposition of Pb²⁺ and Tl⁺ on single crystal Ag surfaces