Correction factors for the analysis of voltammetric peak currents measured using staircase voltammetry
The use of staircase voltammetry for the measurement of reversible diffusional redox species under a linear mass-transport regime leads to significant suppression of the peak currents (up to 20% for larger step sizes) and an increase in the peak-to-peak separation (cf. ∆ Epp ~ 70 mV at the reversibl...
| Main Authors: | , , , |
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| Format: | Journal article |
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Elsevier
2015
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| _version_ | 1797056431709487104 |
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| author | Batchelor-McAuley, C Yang, M Hall, E Compton, R |
| author_facet | Batchelor-McAuley, C Yang, M Hall, E Compton, R |
| author_sort | Batchelor-McAuley, C |
| collection | OXFORD |
| description | The use of staircase voltammetry for the measurement of reversible diffusional redox species under a linear mass-transport regime leads to significant suppression of the peak currents (up to 20% for larger step sizes) and an increase in the peak-to-peak separation (cf. ∆ Epp ~ 70 mV at the reversible limit as opposed to 57 mV). These discrepancies between the voltammetric results of a staircase and true analogue voltammogram may lead to mis-interpretation of data. This work provides an overview of the differences between the two techniques in the macro-electrode reversible limit and provides new expressions which allow the peak current of a staircase voltammogram to be quantitatively analysed. Moreover, clear guidance is provided about which conditions the application of the provided equation is valid in the terms of mass-transport edge effects to the macro-electrode. |
| first_indexed | 2024-03-06T19:22:56Z |
| format | Journal article |
| id | oxford-uuid:1ab8a1b4-6400-45cc-96e9-e73742c46ba8 |
| institution | University of Oxford |
| last_indexed | 2024-03-06T19:22:56Z |
| publishDate | 2015 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | oxford-uuid:1ab8a1b4-6400-45cc-96e9-e73742c46ba82022-03-26T10:56:26ZCorrection factors for the analysis of voltammetric peak currents measured using staircase voltammetryJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:1ab8a1b4-6400-45cc-96e9-e73742c46ba8Symplectic Elements at OxfordElsevier2015Batchelor-McAuley, CYang, MHall, ECompton, RThe use of staircase voltammetry for the measurement of reversible diffusional redox species under a linear mass-transport regime leads to significant suppression of the peak currents (up to 20% for larger step sizes) and an increase in the peak-to-peak separation (cf. ∆ Epp ~ 70 mV at the reversible limit as opposed to 57 mV). These discrepancies between the voltammetric results of a staircase and true analogue voltammogram may lead to mis-interpretation of data. This work provides an overview of the differences between the two techniques in the macro-electrode reversible limit and provides new expressions which allow the peak current of a staircase voltammogram to be quantitatively analysed. Moreover, clear guidance is provided about which conditions the application of the provided equation is valid in the terms of mass-transport edge effects to the macro-electrode. |
| spellingShingle | Batchelor-McAuley, C Yang, M Hall, E Compton, R Correction factors for the analysis of voltammetric peak currents measured using staircase voltammetry |
| title | Correction factors for the analysis of voltammetric peak currents measured using staircase voltammetry |
| title_full | Correction factors for the analysis of voltammetric peak currents measured using staircase voltammetry |
| title_fullStr | Correction factors for the analysis of voltammetric peak currents measured using staircase voltammetry |
| title_full_unstemmed | Correction factors for the analysis of voltammetric peak currents measured using staircase voltammetry |
| title_short | Correction factors for the analysis of voltammetric peak currents measured using staircase voltammetry |
| title_sort | correction factors for the analysis of voltammetric peak currents measured using staircase voltammetry |
| work_keys_str_mv | AT batchelormcauleyc correctionfactorsfortheanalysisofvoltammetricpeakcurrentsmeasuredusingstaircasevoltammetry AT yangm correctionfactorsfortheanalysisofvoltammetricpeakcurrentsmeasuredusingstaircasevoltammetry AT halle correctionfactorsfortheanalysisofvoltammetricpeakcurrentsmeasuredusingstaircasevoltammetry AT comptonr correctionfactorsfortheanalysisofvoltammetricpeakcurrentsmeasuredusingstaircasevoltammetry |