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Nonlinear Poisson–Boltzmann theory of a double layer at a rough metal/electrolyte interface: A new look at the capacitance data on solid electrodes

J. Chem. Phys. 108, 1715 (1998); doi:10.1063/1.475543

Issue Date: 22 January 1998

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L. I. Daikhin
School of Chemistry, Tel Aviv University, 69978 Tel Aviv, Israel

A. A. Kornyshev
Institut für Energieverfahrenstechnik, Forschungszentrum Jülich GmbH (KFA), 52425 Jülich, Germany

M. Urbakh
School of Chemistry, Tel Aviv University, 69978 Tel Aviv, Israel
Nonlinear Poisson–Boltzmann theory is developed to extend our previous work [Phys. Rev. E 53, 6192 (1996)] on the case when the potential drop across the double layer is not small compared to the thermal energy. Close to the potentials of zero charge (pzc) the effect of surface roughness on the double-layer capacitance is mainly determined by an interplay between the lateral correlation length of roughness and the Debye length. However, far from the pzc dramatic effects of electrode potential are found which are not reduced to the potential-induced shortening of the diffuse layer thickness. ©1998 American Institute of Physics.
History: Received 31 July 1997; accepted 16 October 1997
Permalink: http://link.aip.org/link/?JCPSA6/108/1715/1
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KEYWORDS and PACS

Keywords
PACS
  • 82.45.+z
    Physical chemistry Electrochemistry and electrophoresis
  • 68.35.Bs
    Surfaces and interfaces; thin films and whiskers (structure and nonelectronic properties) Solid surfaces and solidsolid interfaces Surface structure and topography
  • 61.20.-p
    Structure of solids and liquids; crystallography Structure of liquids
  • 73.20.-r
    Electronic structure and electrical properties of surfaces, interfaces, and thin films Surface and interface electron states
  • YEAR: 1998

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PUBLICATION DATA

ISSN:
0021-9606 (print)   1089-7690 (online)
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REFERENCES (19)
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