Theoretical approach to the physics of fuel cells

• Autorzy: Wijewardena Gamalath K. A. I. L. , Peiris B. M. P.
• Języki publikacji: EN

Abstrakty

EN

Ion transport rate of PAFC, AFC, PEMFC, DMFC and SOFC fuel cells under the influence of an electric field and concentration gradient were evaluated for static electrolytes. AFC are the best fuel cells for high er current applications while direct methanol fuel cells DMFC are the best for lower current applications AT lower temperatures. An equation for voltage output of a general fuel cell was obtained in terms of temperature and partial pressure of reactants. Performance of a 2D fuel cell was analyzed by simulating polarization and power curves for a fuel cell operating at 60 ?C with a limiting current density of 1.5 A cm- 2. The maximum power for this fuel cell was 8.454 W delivering 82% of maximum loading current density. When the temperature was increased by one third of its original value, the maximum power increased by 6.75% and at 60 ?C for a 10 times increment of partial pressure of reactants, the maximum power increased by 2.43%.The simulated power curves of the fuel cells were best described by cubic fits.

Słowa kluczowe

EN

fuel cell; ion transport rate; concentration gradient; polarization losses; polarization curve; power curve

PL

ogniwa paliwowe; transport jonów; gradient stężenia; straty polaryzacyjne; krzywa polaryzacji; krzywa mocy

• Wydawca: Przedsiębiorstwo Wydawnictw Naukowych "DARWIN"
• Czasopismo: International Letters of Chemistry, Physics and Astronomy
• Rocznik: 2012
• Tom: Vol. 2
• Strony: 15--27
• Opis fizyczny: Bibliogr. 12 poz., rys., tab.

Twórcy

autor

Wijewardena Gamalath K. A. I. L.

autor

Peiris B. M. P.

• Department of Physics, University of Colombo, Colombo 03, Sri Lanka,

Bibliografia

• [1] M. W. Verbrugge, R.F. Hill, Journal of the Electrochemical Society, 137(12) (1990) 3770-3777
• [2] D. M. Bernardi, M. W. Verbrugge, J. A, American Institute of Chemical Engineers (AIChE) 37 (1991) 1151-1163, A, Journal of the Electrochemical Society, 139(9) (1992) 2477-2491.
• [3] T.E. Springer, T.A. Zawodzinski, S. Gottesfeld, Journal of the Electrochemical Society, 138(8) (1991) 2334-2342.
• [4] V. Gurau, H. Liu, S. Kakac, AIChE Journal 44(11) (1998) 2410-2422. V. Gurau, F.Barbir, H. Liu, J. Electrochem 147 (2000) 2468.
• [5] A. Kazim, H. T. Liu, P. Forges, Journal of Applied Electrochemistry 29, (1999) 1409.
• [6] D.Singh, D. M. Lu, N. Djilali, International Journal of Engineering Science 37 (1999) 431.
• [7] S. Dutta, S.Shimpalee, J. W. Van Zee, Intl. J. of Heat and Mass Transfer, 44/11 (2001) 2029.
• [8] L.You, H.Liu, International Journal of Heat and Mass Transfer 45(11) (2002) 2277-2287, Journal of Power Sources 155(2) (2006) 219-230.
• [9] K.W.Lum, Three Dimensional Computational Modelling of a Polymer Electrolyte Fuel, Ph.D. dissertation, University of Loughborough (2003).
• [10] M. M. Mattew, Fuel Cell Engines. New Jersey: John Wiley & Sons. (2008)
• [11] F.Barbir, PEM Fuel Cells: Theory and Practice, Elsevier Academic Press, San Diego (2005) pp. 147–206.
• [12] E. L. Cussler, Diffusion Mass Transfer in Fluid Systems. (Cambridge University. Press,Cambridge, (1997) 101.