We have carried out a systematic investigation of the surface electrochemistry of glassy carbon−epoxy composite electrodes. Key findings include the following: the distributed resistance in electrodes results in shifts in E 1/2, and the overlap of diffusion layers on electrode surface leads to a potential dependent i l . Two different types of carbon fiber array electrodes were studied for comparison with glassy carbon−epoxy electrodes. A numerical model was built, and results show shifts in E 1/2 and sloping i l which are in good qualitative agreement with experiments.
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Zhao et al. (2008) studied this question.
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