Abstract
A two-dimensional model is developed to simulate the performance of solid oxide fuel cells (SOFCs) fed with CO2and CH4mixture. The electrochemical oxidations of both CO and H2are included. Important chemical reactions are considered in the model, including methane carbon dioxide reforming (MCDR), reversible water gas shift reaction (WGSR), and methane steam reforming (MSR). It's found that at a CH4/CO2molar ratio of 50/50, MCDR and reversible WGSR significantly influence the cell performance while MSR is negligibly small. The performance of SOFC fed with CO2/CH4mixture is comparable to SOFC running on CH4/H2O mixtures. The electric output of SOFC can be enhanced by operating the cell at a low operating potential or at a high temperature. In addition, the development of anode catalyst with high activity towards CO electrochemical oxidation is important for SOFC performance enhancement. The model can serve as a useful tool for optimization of the SOFC system running on CH4/CO2mixtures.
Original language | English |
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Pages (from-to) | 116-129 |
Number of pages | 14 |
Journal | Energy Conversion and Management |
Volume | 70 |
DOIs | |
Publication status | Published - 10 Apr 2013 |
Keywords
- Electrochemistry
- Heat and mass transfer
- Hydrocarbon fuels
- Methane carbon dioxide reforming
- Porous media
- Solid oxide fuel cell
ASJC Scopus subject areas
- Renewable Energy, Sustainability and the Environment
- Nuclear Energy and Engineering
- Fuel Technology
- Energy Engineering and Power Technology