Generator-Sensor Impedance at Double Channel Electrodes

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dc.contributor.authorHolm, Thomas
dc.contributor.authorIngdal, Mats
dc.contributor.authorStrobl, Johnathan R.
dc.contributor.authorFanavoll, Espen V.
dc.contributor.authorSunde, Svein
dc.contributor.authorSeland, Frode
dc.contributor.authorHarrington, David A.
dc.date.accessioned2019-05-08T19:39:19Z
dc.date.available2019-05-08T19:39:19Z
dc.date.copyright2017en_US
dc.date.issued2017
dc.description.abstractA method for measuring downstream concentration effects through electrochemical impedance spectroscopy at double channel electrodes is demonstrated. An ac current perturbation is applied at an upstream working electrode and the resulting ac potential response at a downstream sensing electrode is measured. This generator-detector scheme is implemented with a single potentiostat. Experimental data for a reversible redox couple are presented and good agreement is found with numerical simulations. A qualitative explanation of the features is given which lays the foundation for a more rigorous theoretical treatment. Relationships with flow rate and frequency are found that can scale the data to lie on a universal curve.en_US
dc.description.reviewstatusRevieweden_US
dc.description.scholarlevelFacultyen_US
dc.description.sponsorshipFinancial support from the Natural Sciences and Engineering Research Council of Canada (discovery grant 37035), the Research Council of Norway (project 221899), the University of Victoria, and the Norwegian University of Science and Technology is gratefully acknowledged. The Research Council of Norway is also acknowledged for the support to the Norwegian Micro and NanoFabrication Facility, NorFab (197411/V30). Thomas Holm thanks the Faculty of Natural Sciences and Technology at Norwegian University of Science and Technology for the award of a scholarship. We thank Rhonda Stoddard for synthesis of some ruthenium(II) hexammine chloride.en_US
dc.identifier.citationHolm, T., Ingdal, M., Strobl, J.R., Fanavoll, E.V., Sunde, S., Seland, F. & Harrington, D.A. (2017). Generator-Sensor Impedance at Double Channel Electrodes. Electrochimica Acta, 229, 452-457. https://doi.org/10.1016/j.electacta.2017.01.075en_US
dc.identifier.urihttp://dx.doi.org/10.1016/j.electacta.2017.01.075
dc.identifier.urihttp://hdl.handle.net/1828/10865
dc.language.isoenen_US
dc.publisherElectrochimica Actaen_US
dc.subjectChannel electrode
dc.subjectElectrochemical impedance spectroscopy
dc.subjectMass transport
dc.subjectFEM
dc.subject.departmentDepartment of Chemistry
dc.titleGenerator-Sensor Impedance at Double Channel Electrodesen_US
dc.typePostprinten_US

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