A solid oxide fuel cell micro-scale modeling with spherical particle shaped electrodes
| Autor: | Pascal Brault, Penyarat Chinda, W. Wechsatol, Somchai Chanchaona |
|---|---|
| Přispěvatelé: | Department of Mechanical Engineering, King Mongkut’s University of Technology Thonburi [Bangkok], Groupe de recherches sur l'énergétique des milieux ionisés (GREMI), Centre National de la Recherche Scientifique (CNRS)-Université d'Orléans (UO) |
| Jazyk: | angličtina |
| Rok vydání: | 2011 |
| Předmět: |
Analytical chemistry
02 engineering and technology Overpotential 010402 general chemistry Electrochemistry 01 natural sciences Operating temperature Mass transfer mass transfer dimensionless parameter Instrumentation Microscale chemistry Chemistry [SPI.PLASMA]Engineering Sciences [physics]/Plasmas volumetric fractions of ionic/electronic Mechanics 021001 nanoscience & nanotechnology Condensed Matter Physics 0104 chemical sciences Electronic Optical and Magnetic Materials Electrode cell overpotential Particle Solid oxide fuel cell electrochemical reaction 0210 nano-technology |
| Zdroj: | European Physical Journal: Applied Physics European Physical Journal: Applied Physics, EDP Sciences, 2011, 54, pp.23411. ⟨10.1051/epjap/2011100171⟩ |
| ISSN: | 1286-0042 1286-0050 |
| DOI: | 10.1051/epjap/2011100171⟩ |
| Popis: | International audience; A micro-scale model of a solid oxide fuel cell (SOFC) involving the mass transfer together with the electrochemical reaction, the electron and ion transports through the respective spherically shaped electron- and ion-conducting particles inside the electrodes was mathematically developed. Couples of useful dimensionless parameters were introduced in order to represent the characteristics of the cell. The predicted cell performance was showed according to various operating and design conditions. The effects of micro-scale electrode geometry on the cell performance were also taken into account. Parametric study according to the volumetric fraction of ionic and electronic conducting particles was conducted in order to examine the effects of operating conditions on the cell overpotentials. The study results substantiate the fact that SOFC overpotential could be effectively decreased by increasing the operating temperature as well as operating pressure. This present study reveals the working mechanisms of SOFC at the microscale level, while demonstrating the use of micro-scale relations to enhance the SOFC performance. The accuracy of the presented model was validated by comparing to already existing experimental results from the available literatures. |
| Databáze: | OpenAIRE |
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