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本文提出电极/溶液界面溶剂化层偶极取向分布模型,应用统计力学方法及热力学平衡条件导出普遍化的单层吸附等温方程,其电解质溶液的溶剂组成可以是纯态的或混合物(多组份)的.文中分别以甲酰胺、碳酸亚乙酯和甲醇等三种纯溶剂的汞/溶液界面为例,采用曲线拟合计算内层微分电容随表面电荷变化关系。预计本模型处理对汞/水溶液或汞/(混合溶剂)溶液界面仍可适用。
In this paper, the dipole orientation distribution model of the solvation layer at the electrode / solution interface is proposed. The generalized monolayer adsorption isotherm equation is derived using statistical mechanics and thermodynamic equilibrium conditions. The solvent composition of the electrolyte solution can be either pure state or mixture In this paper, the mercury / solution interface of three pure solvents, such as formamide, ethylene carbonate and methanol, respectively, is taken as an example to calculate the variation of inner differential capacitance with surface charge by curve fitting. It is expected that this model will still work well for mercury / water or mercury / (mixed solvent) solution interfaces.