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合金阳极过程是一个复杂的电极过程,它包含若干组分之间相互平行而又相互影响的阳极分反应。近年来,随着电化学实验技术的发展,人们开始进行合金阳极过程各分反应速度的测量和动力学性质的探讨[1-7],这对于深入揭示合金阳极过程的动力学规律,具有十分重要的意义。测量合金阳极过程分反应速度即分电流的方法,目前采用的已有溶液分析、示踪原子、旋转圆盘-圆环电极等。因旋转盘-环电极遵循理想的对流扩散规律,可严格控制传质动力学条件,且响应时间比较快、灵敏度较高,是研究合金阳极过程分反应动力学比较优越的手段。原则上讲,测定了分电流,就可绘出分反应的极化曲线,计算分反应动力学参数,推测分反应的机埋。但由于实际过程比较复杂,目前对合金阳极过程分反应动力学作定量处理的文献还很少。
Alloy anode process is a complex electrode process, which contains several components parallel to each other but also affect the anode reaction. In recent years, with the development of electrochemical experimental technology, people began to measure the reaction speed and kinetic properties of the various parts of the anode process [1-7], which reveals the dynamics of the anode process alloy has a very Significance. The method of measuring the reaction speed of the anode in the alloy, ie, the sub-current method, currently used in solution analysis, tracer atom, rotating disk - ring electrode and the like. Because the rotating disk-ring electrode follows the ideal convection-diffusion law, the mass transfer kinetics conditions can be strictly controlled, and the response time is faster and the sensitivity is higher. It is a superior means to study the reaction kinetics of alloy anode. In principle, the determination of the sub-current, you can draw the polarization curve of the sub-reaction, calculate the reaction kinetic parameters, speculated that the sub-reaction machine buried. However, due to the complexity of the actual process, there is still little literature on the quantitative treatment of the reaction kinetics of the alloy anode.