Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1289710 | Journal of Power Sources | 2009 | 13 Pages |
Abstract
A micromodel based upon percolation theory is developed to predict effective properties in composite electrodes for solid oxide fuel-cell (SOFC) applications. The theory considers binary and multi-component mixtures of particles that are either ion or electron conductors. The model predicts effective ionic and electronic conductivities, three-phase boundary lengths, and hydraulic pore radii. The effective properties depend upon primary physical characteristics, including average particle-radii, volumetric packing densities, particle contact angles, and porosity. All results are presented in nondimensional form, which provides considerable generality in their practical application.
Related Topics
Physical Sciences and Engineering
Chemistry
Electrochemistry
Authors
Daifen Chen, Zijing Lin, Huayang Zhu, Robert J. Kee,