Modeling Elementary Heterogeneous Chemistry and Electrochemistry in Solid-Oxide Fuel Cells
Top Cited Papers
- 1 January 2005
- journal article
- Published by The Electrochemical Society in Journal of the Electrochemical Society
- Vol. 152 (12), A2427-A2440
- https://doi.org/10.1149/1.2116607
Abstract
This paper presents a new computational framework for modeling chemically reacting flow in anode-supported solid-oxide fuel cells (SOFC). Depending on materials and operating conditions, SOFC anodes afford a possibility for internal reforming or catalytic partial oxidation of hydrocarbon fuels. An important new element of the model is the capability to represent elementary heterogeneous chemical kinetics in the form of multistep reaction mechanisms. Porous-media transport in the electrodes is represented with a dusty-gas model. Charge-transfer chemistry is represented in a modified Butler-Volmer setting that is derived from elementary reactions, but assuming a single rate-limiting step. The model is discussed in terms of systems with defined flow channels and planar membrane-electrode assemblies. However, the underlying theory is independent of the particular geometry. Examples are given to illustrate the model.Keywords
This publication has 53 references indexed in Scilit:
- Solid-oxide fuel cells with hydrocarbon fuelsProceedings of the Combustion Institute, 2005
- CFD simulation tool for solid oxide fuel cellsJournal of Power Sources, 2004
- Simulation of a composite cathode in solid oxide fuel cellsElectrochimica Acta, 2004
- State-space modeling of the anodic SOFC system Ni, H2–H2O∣YSZSolid State Ionics, 2002
- Anodic Polarization Related to the Ionic Conductivity of Zirconia at Ni-Zirconia/Zirconia ElectrodesJournal of the Electrochemical Society, 2001
- Modeling of Conductive Transport in Proton-Exchange Membranes for Fuel CellsJournal of the Electrochemical Society, 2000
- Reaction kinetics of the Pt, O2(g)|c-ZrO2 system: precursor-mediated adsorptionSolid State Ionics, 1999
- Identification of the reaction mechanism of the Pt, O2(g)|yttria-stabilized zirconia system Part II: Model implementation, parameter estimation, and validationSolid State Ionics, 1999
- CO2Reforming of CH4Catalysis Reviews, 1999
- Micro-modelling of solid oxide fuel cell electrodesElectrochimica Acta, 1998