Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.9/1465
Título: Current density distribution mapping in polymer electrolyte membrane fuel cell
Autor: Sousa, T.
Falcão, D. S.
Pinto, A. M. F. R.
Rangel, C. M.
Palavras-chave: PEMFC
Current density distribution
Segmented
Data: 10-Nov-2011
Citação: Sousa, T. Falcão, D. S.; Pinto, A. M. F. R.; Rangel, C. M. Current density distribution mapping in polymer electrolyte membrane fuel cell. In: 4th International Seminar on Advances in Hydrogen Energy Technologies : Oportunities and Challenges in a Hydrogen Economy, Viana do Castelo, Novembro 10-11, 2011,6 p.
Resumo: A non-uniform utilization of the active area due to inhomogeneous current density distribution is one of the main factors for poor fuel cell performance. Furthermore, it leads to hot points which can be responsible for thermal stress in the membrane electrode assemble (MEA). Therefore, it became extremely important to have a consistent technic to visualize in real time the current density and temperature distribution on the active area. For this purpose a printed circuit board (current scan lin® form S++) was used to measure the current density and temperature distribution. With this equipment it was possible to generate high resolution counters for these two variables. With these results the effect on the current density distribution by different flow fields design, oxygen stoichiometry, and temperature were analysed. Besides, these results can be used to provide crucial data for simulation work, in particular for validation purpose.
URI: http://hdl.handle.net/10400.9/1465
Aparece nas colecções:UPCH - Comunicações em actas de encontros científicos internacionais

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