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dc.rights.licenseopenen_US
hal.structure.identifierInstitut de Mécanique et d'Ingénierie [I2M]
dc.contributor.authorLE, T.D.
hal.structure.identifierInstitut des Sciences Moléculaires [ISM]
dc.contributor.authorZHANG, L.
hal.structure.identifierInstitut des Sciences Moléculaires [ISM]
dc.contributor.authorRECULUSA, Stéphane
hal.structure.identifierLaboratoire des Composites Thermostructuraux [LCTS]
dc.contributor.authorVIGNOLES, Gerard
IDREF: 070191875
hal.structure.identifierCentre de Recherche Paul Pascal [CRPP]
dc.contributor.authorMANO, Nicolas
hal.structure.identifierInstitut des Sciences Moléculaires [ISM]
dc.contributor.authorKUHN, Alexander
hal.structure.identifierInstitut de Mécanique et d'Ingénierie [I2M]
dc.contributor.authorLASSEUX, Didier
IDREF: 131294474
dc.date.accessioned2021-09-06T15:23:00Z
dc.date.available2021-09-06T15:23:00Z
dc.date.issued2019
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/112121
dc.description.abstractEnThis article reports on a procedure to predict the optimal thickness of cylindrical porous electrodes operating a single redox reaction. This is obtained from a macroscopic model for the coupled diffusion-reaction process that is first validated with voltammetry experiments of H2O2/H2O reduction reaction carried out with a series of porous electrodes elaborated in this work. An analytical solution to this model is developed in the steady regime and for electrodes featuring a thickness to mean radius ratio small enough compared to unity. An analytical expression of the optimal electrode thickness is derived corresponding to the crossover value of two asymptotic regimes characterizing the dependence of the volume current density produced by the electrode upon its thickness. The predictive tool of the optimal thickness is general, regardless the porous microsctructure. The case of the electrodes used in the reported experiments illustrates that the optimal thickness is not intrinsic to the microsctructure characterized by the size of the representative volume, its specific area and effective diffusion coefficient. It also depends on the operating conditions reflected in the kinetic number, Ki, and the thickness of the diffusion layer surrounding the electrode. The dependence of the optimal thickness on these two parameters is quite significant in a range of very small values of Ki but remains quasi constant beyond a threshold value.
dc.language.isoENen_US
dc.rightsAttribution 3.0 United States*
dc.rights.urihttp://creativecommons.org/licenses/by/3.0/us/*
dc.title.enOptimal Thickness of a Porous Micro-Electrode Operating a Single Redox Reaction
dc.typeArticle de revueen_US
dc.identifier.doi10.1002/celc.201800972en_US
dc.subject.halChimie/Matériauxen_US
bordeaux.journalChemElectroChemen_US
bordeaux.page173-180en_US
bordeaux.volume6en_US
bordeaux.hal.laboratoriesLaboratoire des Composites Thermo Structuraux (LCTS) - UMR 5801en_US
bordeaux.issue1en_US
bordeaux.institutionUniversité de Bordeauxen_US
bordeaux.institutionCNRSen_US
bordeaux.institutionCEAen_US
bordeaux.institutionBordeaux INP
bordeaux.institutionINRAE
bordeaux.institutionArts et Métiers
bordeaux.peerReviewedouien_US
bordeaux.inpressnonen_US
hal.identifierhal-02367334
hal.exportfalse
dc.rights.ccCC BYen_US
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=ChemElectroChem&rft.date=2019&rft.volume=6&rft.issue=1&rft.spage=173-180&rft.epage=173-180&rft.au=LE,%20T.D.&ZHANG,%20L.&RECULUSA,%20St%C3%A9phane&VIGNOLES,%20Gerard&MANO,%20Nicolas&rft.genre=article


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