期刊
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
卷 571, 期 2, 页码 211-221出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jelechem.2004.05.012
关键词
double potential step chronoamperometry; microdisk electrode; simulation; unequal diffusion coefficients
An efficient approach to the simulation of the double potential step chronoamperometry at a microdisk electrode based on an exponentially expanding time grid and conformal mapping of the space is presented. The dimensionless second potential step flux data are included as a function of the first potential step duration and the ratio of the diffusion coefficients of the reacting species allowing instant analysis of the experimental double potential step chronoamperograms without a need for simulation. The values of the diffusion coefficients are determined for several test systems and found to be in good agreement with existing literature data. (C) 2004 Elsevier B.V. All rights reserved.
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