物理化学学报 >> 1992, Vol. 8 >> Issue (02): 218-225.doi: 10.3866/PKU.WHXB19920215

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多个时间常数线性体系暂态响应方程参数的代数求解法

宋光铃; 曹楚南; 林海潮   

  1. 中国科学院金属腐蚀与防护研究所，腐蚀科学开放研究实验室，沈阳 110015
  • 收稿日期:1990-12-25 修回日期:1991-07-02 发布日期:1992-04-15
  • 通讯作者: 曹楚南

A New Aproach for Processing Data of Transient Response to a Small Amplitude Potential Step

Song Guang-Ling; Cao Chu-Nan; Lin Hai-Chao   

  1. Corrosion Science Laboratory,Institute of Corrosion and Protection of Metals, Academia Sinica, 62 wencui road, shenyang 110015
  • Received:1990-12-25 Revised:1991-07-02 Published:1992-04-15
  • Contact: Cao Chu-Nan

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摘要： 从线性条件出发, 推导了含n个时间常数体系恒电位阶跃时暂态响应方程, 并提出一套解析形为ΔI=ΔI_∞+sum from i=1 to n k_iexp(-t/τ_i)暂态方程各未知参数的代数解法。该方法可对未知体系时间常数个数进行判定, 比起一般曲线拟合更加快速简便, 且抗干扰能力较强。

关键词: 线性响应, 暂态过程, 恒电位阶跃, 参数解析

Abstract: The equation of transient response to a small amplitude perturbation of potential step for multi-time constant electrode processes was deduced, and a method of calculating the parameters in the equation of transient response containing one, two or three time constants was proposed. Using this method, the number of time constants can be determened unambigiously, and the kinetic parameters of the electrode process studied can be estimated easily.

Key words: Linear response, Transient process, Potentiostatic step, Parameter determination