Energy sources, liquid-solid interface

Due to the problems noted above and also because numerous other methods to obtain the surface concentration are available for the solid gas interface the use of eq. (7) is no longer pursued. It may be useful to comment, however, that an equivalent relation for the dependence of the interface energy as a function of the electrode potential is still the major source of quantitative data on adsorbate concentrations at the solid-liquid interface ( chronocoulometry [66Ans, 86Ric]). 

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