论文标题
水偶极子的定向排序对多组分电解质溶液在充电表面附近的不同尺寸的柜台分层的影响 - 平均场接近
Effect of orientational ordering of water dipoles on stratification of counterions of different size in multicomponent electrolyte solution near charged surface -- a mean field approach
论文作者
论文摘要
我们从理论上使用平均场方法研究了电动双层，包括不均匀的尺寸效应和电解质溶液中水偶极子的定向顺序排序。在求解泊松方程的过程中，通过数值确定自由能的最小化，所得的离子和水分布函数。并讨论并讨论了在带电表面附近的多组分电解质溶液中不同尺寸的柜台分层的不均匀离子尺寸和定向排序的影响。还计算了针对二进制电解质溶液的相对介电常数和电容差异电容的空间依赖性，然后与先前模型的预测进行了比较。详细研究了反相位浓度和离子尺寸对表面电荷密度，相对介电常数和差异电容的影响，以详细研究多组分电解质溶液。
We theoretically studied electric double layer by using the mean-field approach including the non-uniform size effect and the orientational ordering of water dipoles in electrolyte solution. Performing the minimization of the free energy, the resulting ion and water distribution functions are determined numerically in the process of solving the Poisson's equation. The effect of non-uniform ionic size and orientational ordering of water dipoles on stratification of counterions of different size in multicomponent electrolyte solution near the charged surface are presented and discussed. Spatial dependence of relative permittivity and differential capacitance of electric double layer are also calculated for binary electrolyte solution and then compared with the predictions of the previous models. Effect of bulk concentration of counterions and ion size effects on surface charge density, excess portion of counterions, relative permittivity and differential capacitance are studied for multicomponent electrolyte solution in detail.
