Theoretical considerations on the modelling of transport in a three-phase electrode and application to a proton conducting solid oxide electrolysis cell
| Autor: | Olivier Lacroix, Mikael Dumortier, José Sanchez, Michel Keddam |
|---|---|
| Přispěvatelé: | Institut Européen des membranes (IEM), Université Montpellier 2 - Sciences et Techniques (UM2)-Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), AREVA NP - Centre Technique (FRANCE), Laboratoire Interfaces et Systèmes Electrochimiques (LISE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Université Montpellier 2 - Sciences et Techniques (UM2)-Institut de Chimie du CNRS (INC)-Université de Montpellier (UM) |
| Jazyk: | angličtina |
| Rok vydání: | 2012 |
| Předmět: |
Materials science
Electrolytic cell Multiphysics Analytical chemistry Porous media Energy Engineering and Power Technology Thermodynamics 02 engineering and technology Electrolyte 010402 general chemistry 01 natural sciences 7. Clean energy Electrolysis law.invention Electrokinetic phenomena law [CHIM]Chemical Sciences Mathematical modelling Renewable Energy Sustainability and the Environment 021001 nanoscience & nanotechnology Condensed Matter Physics 0104 chemical sciences Anode Fuel Technology Electrode SOEC 0210 nano-technology [CHIM.OTHE]Chemical Sciences/Other Current density |
| Zdroj: | International Journal of Hydrogen Energy International Journal of Hydrogen Energy, 2012, 37 (16), pp.11579-11594. ⟨10.1016/j.ijhydene.2012.05.023⟩ International Journal of Hydrogen Energy, Elsevier, 2012, 37 (16), pp.11579-11594. ⟨10.1016/j.ijhydene.2012.05.023⟩ |
| ISSN: | 0360-3199 |
| DOI: | 10.1016/j.ijhydene.2012.05.023⟩ |
| Popis: | This paper presents a numerical model for fuel cells and electrolysis cells that use cermets as electrodes. The mass and charge continuity equations were demonstrated inside the electrodes and in the divergence term, surface ratios were used instead of more usual volumetric ratios. The Butler–Volmer equation for electrokinetics was used with concentration coefficients in order to predict correctly the concentration effects on the value of the transfer current density in the cermets. In addition, it was considered that the reaction takes place inside all of cermet's volume inste1 ad of a thin layer near the electrolyte. The model was tested for the proton-conducting SOEC technology on a generic cell design and the calculations were performed with COMSOL Multiphysics 4.1™. A parametric analysis was carried out on a proton-conducting SOEC in galvanostatic mode in order to evaluate the influence of parameters on oxygen production across the electrode in the anodic compartment. This analysis showed that the structural parameters of the cermets such as grain radius or volumetric ratios of the conductors play a major role in the distribution of reaction kinetics. |
| Databáze: | OpenAIRE |
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