| 粉末多孔镍电极电化学阻抗谱及其数学模型 |
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| 引用本文： | 袁安保,成少安,张鉴清,曹楚南.粉末多孔镍电极电化学阻抗谱及其数学模型[J].物理化学学报,1998,14(9):804-810. |
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| 作者姓名： | 袁安保 成少安 张鉴清 曹楚南 |
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| 作者单位： | Department of Chemistry,Zhejiang University,Hangzhou 310027 |
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| 摘 要： | 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Ｃｄ１，质子扩散系数Ｄ及活性物质粒子半径ｒ０等改变，电极的不同荷电状态及多孔镍电极中的传质过程对镍电阻阻抗谱的影响，理论模型较好地解释了一些实验结果。
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| 关 键 词： | 多孔镍电极 电化学阻抗谱 数学模型 |
| 收稿时间： | 1997-12-15 |
| 修稿时间： | 1998-03-16 |
Electrochemical lmpedance Spectroscopy of Porous Nickel Electrode and its Mathematical Model |
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| Yuan An-Bao,Cheng Shao-An,Zhang Jian-Qing,Cao Chu-Nan.Electrochemical lmpedance Spectroscopy of Porous Nickel Electrode and its Mathematical Model[J].Acta Physico-Chimica Sinica,1998,14(9):804-810. |
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| Authors: | Yuan An-Bao Cheng Shao-An Zhang Jian-Qing Cao Chu-Nan |
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| Institution: | Department of Chemistry,Zhejiang University,Hangzhou 310027 |
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| Abstract: | A mathematical model for electrochemical impedance spectroscopy(EIS) of porous nickel electrode has been proposed based on the fact that the kinetics of nickel electrode reaction is mainly controled by the proton diffusion in solid state. Effects of some parameters such as double layer capacitance Cd1, diffusion coeffecient of proton D and powder size of active material To on the EIS of nickel electrode have been predicted according to this model. The effects of state of chargc(SOC) and mass transport in liquid phase on the EIS of porous nickel electrode hare also been discussed. |
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| Keywords: | Porous nickel electrode Electrochemical impedance spectroscopy(EIS) Mthematical model |
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