CSIRO Process Science and Engineering, Bayview Avenue, Clayton South, Victoria 3169, Australia.
J Phys Chem B. 2010 Sep 2;114(34):11149-54. doi: 10.1021/jp105317e.
The electrical double-layer structure and capacitance in room temperature ionic liquids at electrified interfaces were systematically studied with use of the self-consistent mean-field theory. The capacitance curve departs from symmetry with respect to the point of zero charge when unequal ion-size is implemented or when specific adsorption of ions is introduced. For the case of unequal ion-size, the shape of the capacitance curve is strongly determined by the size of the counterion and only weakly influenced by the co-ion size. When present, specifically adsorbed ions would change the capacitance within a limited range of applied potential from the point of zero charge, which itself varies with the strength of specific adsorption.
用电化学双层理论系统地研究了室温离子液体在带电界面处的双层结构和电容。当实施不等离子大小或引入离子特异性吸附时，电容曲线相对于零电荷点不再对称。对于不等离子大小的情况，电容曲线的形状主要取决于抗衡离子的大小，而受共离子大小的影响较小。当存在特定吸附的离子时，它会在从零电荷点开始的有限的施加电势范围内改变电容，而零电荷点本身会随着特定吸附强度的变化而变化。
