Mathematical Modeling of a Solid Oxide Fuel Cell with Nearly Spherical-Shaped Electrode Particles

Penyarat Chinda (1) , Somchai Chanchaona (1) , Pascal Brault (2) , Wishsanuruk Wechsatol (1)

1 Department of Mechanical Engineering
2 GREMI - Groupe de recherches sur l'énergétique des milieux ionisés

A micro-scale model of a Solid Oxide Fuel Cell (SOFC) involving electrochemical reactions and mass transport behaviors throughout electrodes packed with nearly spherical-shaped particles was mathematically developed. The model was validated by comparing the predicted results with already available experimental results. By minimizing the cell overpotential, the model provides the optimal size of electrode particles corresponding to the specified porosities. The optimal volumetric ratio between ionic and electronic conducting particles is also proposed. The study results substantiate the fact that SOFC overpotential could be effectively decreased by increasing the operating temperature as well as operating pressure. The present study reveals the working mechanisms of SOFC at the micro-scale level, while demonstrating the use of microstructure relations to enhance the SOFC performance.

Domaines: Plasmas

Penyarat Chinda, Somchai Chanchaona, Pascal Brault, Wishsanuruk Wechsatol. Mathematical Modeling of a Solid Oxide Fuel Cell with Nearly Spherical-Shaped Electrode Particles. Journal of Sustainable Energy and Environment, 2010, 1, pp.185-196. ⟨hal-00581564⟩