Zn在KOH水溶液中的阳极溶解和钝化机理

本文用旋转圆盘电极、稳态极化曲线、交流阻抗及恒电流充电曲线等方法研究了Zn在常温(30℃)和低温(-20℃)的KOH水溶液中阳极溶解和钝化过程的规律。从而提出其反应机理,并用最优化程序在TRS-80微型计算机上计算了反应机理中基元反应的速度和动力学参数的最佳值。由动力学参数计算的φ～i关系定量地符合从阳极溶解至钝化前整条极化曲线实验数据。旋转圆盘电极的转速效应、交流阻抗值以及恒电流充电电量值也都与提出的反应机理相符合。     

用电化学技术制备聚乙炔薄膜

The suitably doped polyacetylene film can be used for the conversion of sun- light energy into electrical or chemical energy. A new electrochemical technique was introduced for obtaining polyacetylene film by cathodic initiation of the poly- merization process. The advantage of this technique is that the polymerization process can be controlled by the wave form of electrode current and the composi- tion of the solution. Polyacetylene films of different properties and thickness can be conveniently prepared in this way.The catalyst was dissolved in certain organic solvent and introduced into the electrolytic cell. The solution was then cooled down to low temperature and saturated with acetylene gas before cathodic polymerization. Several transition metals and other electric conducting materials have been used as electrodes. On passing suitable current, red color appeared at the cathode/solution interface and the polyacetylene film formed gradually....