کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
219324 | 463264 | 2012 | 10 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: The long-time chronoamperometric current at an inlaid disk electrode The long-time chronoamperometric current at an inlaid disk electrode](/preview/png/219324.png)
Existing analytical solutions for the long-time chronoamperometric current response at an inlaid disk electrode are restricted to diffusion-limited currents due to extreme polarisation or reversible kinetics at the electrode surface. In this article, we derive an approximate analytical solution for the long-time-dependent current when the kinetics of the redox reaction at the electrode surface are quasi-reversible and the diffusion coefficients of the oxidant and reductant are different. We also detail a novel method for calculating the steady-state current. We show that our new method encapsulates and extends the existing solutions, and agrees with numerically simulated currents.
Figure optionsDownload as PowerPoint slideHighlights
► Analytical expression for chronoamperometric current at an inlaid disk electrode.
► Valid for quasi-reversible redox reactions at long times.
► Allows for unequal diffusion coefficients for the oxidant and reductant.
Journal: Journal of Electroanalytical Chemistry - Volume 673, 15 May 2012, Pages 48–57