利用电化学石英晶体微天平( EQCM)研究了含有防冻添加剂(甲醇、乙醇)的高氯酸钠水溶液中的Na+离子在活性炭表面的吸附过程。根据EQCM数据估算了电极/溶液界面上与Na+络合的甲醇、乙醇分子的数量，研究了Na+的溶剂化效应随本体溶液中防冻添加剂浓度的变化趋势，以及对活性炭电极比容量的影响。%Electrochemical quartz crystal microbalance( EQCM) was used to investigate the adsorption of Na+into the micropores of activated carbon in 5 mol/L NaClO4+x mol/L MeOH and 5 mol/L NaClO4+x mol/L EtOH aqueous solutions. Molecule numbers of methanol or ethanol associated with each Na+ at the interfaces were estimated. The results show that methanol and ethanol are adsorbed into the micropores together with Na+;the higher the concentration of methanol and ethanol in bulk solutions was, the more molecule numbers of methanol or ethanol associated with each Na+adsorpted into the pores of activated carbon; methanol and ethanol adsorpted into the pores occupied some space of the micropores and lowered the dielectric constant of the double layers, thus suppressed the specific capacitance of Maxsorb negative electrodes.
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