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镍电极反应动力学在大多情况下是受固态质子扩散过程控制的,以此为出发点建立了具有明确物理意义的镍电极电化学阻抗谱(EIS)的数学模型.并以该模型为基础,讨论了一些模型参数如双电层电容C(d1)、质子扩散系数D及活性物质位于半径γ0等的改变,电极的不同行电状态以及多孔镍电极中的传质过程对镍电极阻抗谱的影响.理论模型较好地解释了一些实验结果.
In most cases, the kinetics of nickel electrode reaction is controlled by the solid state proton diffusion process. Based on this, a mathematical model of nickel electrode electrochemical impedance spectroscopy (EIS) with definite physical meaning is established. Based on this model, some model parameters such as the change of electric double layer capacitance C (d1), proton diffusion coefficient D and the active material at the radius γ0 are discussed. The different states of the electrodes and the mass transfer in the porous nickel electrode Effect of process on impedance spectroscopy of nickel electrode. Theoretical model to explain some of the experimental results.