Breaking boundaries in Electrochemistry: Unveiling a new dimensionless number to tackle convective transfer effect on the voltamperometric answer
This study introduces the Theokane number (Tk) as a groundbreaking dimensionless number in Electrochemistry. Tk enables the determination of the operating state of an electrochemical (EC) system—indicating whether it is in a transient state (characteristic of cyclic voltammetry) or a steady state (t...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2024-06-01
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| Series: | Electrochemistry Communications |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S1388248124000493 |
| _version_ | 1797243034440564736 |
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| author | Guillaume Hopsort Cheikhou Kane Fabien Chauvet Laure Latapie Theodore Tzedakis |
| author_facet | Guillaume Hopsort Cheikhou Kane Fabien Chauvet Laure Latapie Theodore Tzedakis |
| author_sort | Guillaume Hopsort |
| collection | DOAJ |
| description | This study introduces the Theokane number (Tk) as a groundbreaking dimensionless number in Electrochemistry. Tk enables the determination of the operating state of an electrochemical (EC) system—indicating whether it is in a transient state (characteristic of cyclic voltammetry) or a steady state (typical of linear sweep voltammetry)—based on a given combination of potential scan rate and residence time. It aims to bridge the gap between various voltamperometric methods. Tk uniquely compares the duration of the potential scan applied to an EC system to the residence time of the reaction mixture at the electrode. This comparison is pertinent in environments ranging from microfluidic setups to macroscale reactors, including stirred vessels.Tk is particularly crucial for understanding the ‘continuous answer’ of an EC system subjected to voltamperometric polarization across a spectrum of potential scan and stirring rates. Voltammograms recorded in a micro-reactor under varying conditions highlight the influence of operating parameters on EC responses. The approach introduced in this study accomplish three key objectives: i) it validates the Tk number through the comparison of experimental and simulation data, ii) it proposes a range for its applicability; and iii) it opens a new mode for analyzing EC responses. It is important to note that Tk is applicable to both quasi-reversible and irreversible systems. |
| first_indexed | 2024-04-24T18:48:42Z |
| format | Article |
| id | doaj.art-9c73e5961e54489e950bb2097f277936 |
| institution | Directory Open Access Journal |
| issn | 1388-2481 |
| language | English |
| last_indexed | 2024-04-24T18:48:42Z |
| publishDate | 2024-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Electrochemistry Communications |
| spelling | doaj.art-9c73e5961e54489e950bb2097f2779362024-03-27T04:51:40ZengElsevierElectrochemistry Communications1388-24812024-06-01163107706Breaking boundaries in Electrochemistry: Unveiling a new dimensionless number to tackle convective transfer effect on the voltamperometric answerGuillaume Hopsort0Cheikhou Kane1Fabien Chauvet2Laure Latapie3Theodore Tzedakis4Laboratoire de Génie Chimique, Université de Toulouse, CNRS, INPT, UPS, Toulouse, FranceWater, Energy, Environment and Industrial Processes Laboratory, École Superieure Polytechnique (ESP), Dakar, SenegalLaboratoire de Génie Chimique, Université de Toulouse, CNRS, INPT, UPS, Toulouse, FranceLaboratoire de Génie Chimique, Université de Toulouse, CNRS, INPT, UPS, Toulouse, FranceLaboratoire de Génie Chimique, Université de Toulouse, CNRS, INPT, UPS, Toulouse, France; Corresponding author.This study introduces the Theokane number (Tk) as a groundbreaking dimensionless number in Electrochemistry. Tk enables the determination of the operating state of an electrochemical (EC) system—indicating whether it is in a transient state (characteristic of cyclic voltammetry) or a steady state (typical of linear sweep voltammetry)—based on a given combination of potential scan rate and residence time. It aims to bridge the gap between various voltamperometric methods. Tk uniquely compares the duration of the potential scan applied to an EC system to the residence time of the reaction mixture at the electrode. This comparison is pertinent in environments ranging from microfluidic setups to macroscale reactors, including stirred vessels.Tk is particularly crucial for understanding the ‘continuous answer’ of an EC system subjected to voltamperometric polarization across a spectrum of potential scan and stirring rates. Voltammograms recorded in a micro-reactor under varying conditions highlight the influence of operating parameters on EC responses. The approach introduced in this study accomplish three key objectives: i) it validates the Tk number through the comparison of experimental and simulation data, ii) it proposes a range for its applicability; and iii) it opens a new mode for analyzing EC responses. It is important to note that Tk is applicable to both quasi-reversible and irreversible systems.http://www.sciencedirect.com/science/article/pii/S1388248124000493Dimensionless numberElectrochemical EngineeringMicrofluidicsSteady-transient current transitionVoltammetry response continuity |
| spellingShingle | Guillaume Hopsort Cheikhou Kane Fabien Chauvet Laure Latapie Theodore Tzedakis Breaking boundaries in Electrochemistry: Unveiling a new dimensionless number to tackle convective transfer effect on the voltamperometric answer Electrochemistry Communications Dimensionless number Electrochemical Engineering Microfluidics Steady-transient current transition Voltammetry response continuity |
| title | Breaking boundaries in Electrochemistry: Unveiling a new dimensionless number to tackle convective transfer effect on the voltamperometric answer |
| title_full | Breaking boundaries in Electrochemistry: Unveiling a new dimensionless number to tackle convective transfer effect on the voltamperometric answer |
| title_fullStr | Breaking boundaries in Electrochemistry: Unveiling a new dimensionless number to tackle convective transfer effect on the voltamperometric answer |
| title_full_unstemmed | Breaking boundaries in Electrochemistry: Unveiling a new dimensionless number to tackle convective transfer effect on the voltamperometric answer |
| title_short | Breaking boundaries in Electrochemistry: Unveiling a new dimensionless number to tackle convective transfer effect on the voltamperometric answer |
| title_sort | breaking boundaries in electrochemistry unveiling a new dimensionless number to tackle convective transfer effect on the voltamperometric answer |
| topic | Dimensionless number Electrochemical Engineering Microfluidics Steady-transient current transition Voltammetry response continuity |
| url | http://www.sciencedirect.com/science/article/pii/S1388248124000493 |
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