کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
220403 | 463330 | 2008 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
On the use of digital staircase ramps for linear sweep voltammetry at microdisc electrodes: Large step potentials significantly broaden and shift voltammetric peaks
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Cyclic voltammetry is widely used to investigate redox systems and is especially useful for determining electrode kinetic data. Experiments to obtain this data typically involve measuring the peak-to-peak separation as a function of voltage scan rate and applying appropriate theory. Experimental data are almost invariably measured using a digital potentiostat and as such the applied potential will have been varied in a series of discrete steps separated by a value ΔEstepΔEstep. In this work, we calculate the error introduced by approximating a potential ramp as a staircase and consider how this insight may be used to ensure that electrode kinetic parameters extracted from experimental voltammetry so measured are accurate.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Electroanalytical Chemistry - Volume 623, Issue 1, 1 November 2008, Pages 129–133
Journal: Journal of Electroanalytical Chemistry - Volume 623, Issue 1, 1 November 2008, Pages 129–133
نویسندگان
Alexander S. Barnes, Ian Streeter, Richard G. Compton,