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Modelling of Co-Planar Type Single-Chamber Solid Oxide Fuel Cells (SC-SOFCs)

[+] Author Affiliations
Naveed Akhtar, Stephen P. Decent, Daniel Loghin, Kevin Kendall

University of Birmingham, Birmingham, UK

Paper No. FuelCell2008-65150, pp. 241-255; 15 pages
doi:10.1115/FuelCell2008-65150
From:
  • ASME 2008 6th International Conference on Fuel Cell Science, Engineering and Technology
  • ASME 2008 6th International Conference on Fuel Cell Science, Engineering and Technology
  • Denver, Colorado, USA, June 16–18, 2008
  • Conference Sponsors: Nanotechnology Institute
  • ISBN: 0-7918-4318-1 | eISBN: 0-7918-3822-6
  • Copyright © 2008 by ASME

abstract

A two dimensional, non-isothermal numerical model of a single-chamber solid oxide fuel cell (SC-SOFC) has been developed. For the sake of simplicity in developing the model, hydrogen-air mixture (80% hydrogen, 20% air by volume which is considered as safe) has been chosen instead of hydrocarbon-air mixtures (which require complex modelling strategy such as reforming via partial oxidation, modelling of two active fuels, i.e. hydrogen and carbon monoxide). The model is based on considering yttria-stabilized zirconia (YSZ) as electrolyte supported material, nickel yttria-stabilized zirconia (Ni-YSZ) as anode and lanthanum strontium manganite (LSM) as cathode material. Effect of varying distance between anode and cathode, flow rate, temperature, porosity and electrolyte thickness has been investigated in terms of electrochemical performance. It has been found that the flow rate and distance between the electrodes pair are the most sensitive parameters in such type of fuel cells. The model was coded in a commercial software package of finite element analysis, i.e. COMSOL Multiphysics, 3.3a.

Copyright © 2008 by ASME

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