Simple thermodynamic derivation of the electrocapillary equations

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    Abstract

    Debate on the equations for surface excess stress and charge density on a solid continues in the literature. The various points of views are supported by complex mathematical argumentations. This hampers forming a unified understanding on the issue. To alleviate the situation, a concise but rigorous thermodynamic analysis is presented here. It shows that the Shuttleworth equation and the second Gokhshtein equation are invalid. The validity of the Lippman equation and the first Gokhshtein equation depends on the independent variable of the system.
    Original languageEnglish
    Pages (from-to)61-63
    JournalSurface Science
    Volume635
    DOIs
    Publication statusPublished - 2015
    MoE publication typeA1 Journal article-refereed

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    Keywords

    • thermodynamics
    • electrochemistry
    • surface tension
    • capillary phenomena
    • residual stresses

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