Thermodynamic Analysis of a Methane Fed SOFC System Based on a Protonic Conductor
Solid State Ionics
||Electrochemical thermodynamics, Protonic conductor, SOFC system analysis, Solid oxide fuel cell (SOFC)
Institute of High Temperature Electrochemistry, S. Kovalevskoy str. 20, 620219 Ekaterinburg, Russia
Department of Mechanical and Industrial Engineering, School of Engineering, University of Thessalia, Pedion Areos, 383 34 Volos, Greece
Boreskov Institute of Catalysis, pr. Ak. Lavrentieva 5, 630090 Novosibirsk, Russia
Possibility of utilization of CO-containing fuel in a fuel cell based on a solid oxide protonic conductor (SOFC(H+)) is demonstrated. Thermodynamic analysis of a methane fed SOFC(H+) system is performed. It is stated that the fuel utilization depends on H2O/CH4 mole ratio in the feeding fuel mixture and has a maximum at the ratio of about 2.6. It is stated that average EMF of the SOFC(H+) is higher than that of an SOFC based on oxygen ion conductor under the same conditions and, hence, the maximum efficiency of the SOFC(H+) system is about 15% higher than of the SOFC system based on oxygen ion conductor.