摘要
通过循环伏安法研究了自制石墨粉-环氧树脂固态电极在盐酸溶液中充电电流增大的现象.结果表明,在盐酸溶液中氢离子具有渗透进入环氧树脂的能力,其溶胀作用,减小了对石墨粉的包裹作用,使其可接近表面积增大,导致充电电流增大.氢离子与环氧树脂间的相互作用表现为一级反应动力学关系,并求算出它的反应的表观动力学常数为0.007 236/min.此反应在较低浓度下平衡时间随浓度的增加而迅速增加,之后增加缓慢,但在较高浓度下,作用过程迅速达到平衡.
The influence of hydrogen ion on the graphite-epoxy solid electrode was studied by cyclic voltammetry. The charging current of double layer increases when the graphite-epoxy solid electrode set into the hydrochloric acid aqueous solution due to the permeation of hydrogen ion into the the epoxy resin. The interaction between H＋ and the epoxy resins shows a first order reaction kinetics with regression equation of i0.1v = 14.147 961（1.331 5 - e^0.007236t）. The rate constant of the reaction was obtained as 0.007 236/min.
出处
《沈阳师范大学学报（自然科学版）》
CAS
2007年第2期220-223,共4页
Journal of Shenyang Normal University:Natural Science Edition
基金
国家科技部国际合作重大项目(2004DFA02700)
关键词
石墨粉环氧树脂固态电极
循环伏安
氢离子
graphite powder-epoxy resin solid electrode
cyclic voltammetrie
hydrogen ion
