A hybrid serpentine-interdigitated flow channel geometry for fuel cells
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2019
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ENERGY TRANSITION RESEARCH AND INNOVATION
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Resumo
Fuel cells have impressive potential for decarbonization and as high efficiency power sources, however
many challenges have yet to be addressed for large scale deployment and uptake. Among the many
noteworthy lines of research underway, investigating the best flow field in a given device has been
carried a number of times, with perhaps limited success regarding performance improvement. As a
possible final attempt to look over such matters individually, from the component point of view, we
propose yet another flow channel geometry for small-scale fuel cells, in particular polymer electrolyte
fuel cells (PEFCs). The proposed geometry incorporates elements from the two most studied
geometries, namely single serpentine and interdigitated. The rationale is that serpentine channels
have large pressure drop, thus aiding in water removal, while interdigitated promises to deliver large
quantities of reactants to the catalyst. However both seem to fail where the other excels, and thus
devices are left to compromises. The new geometry, as well as its inspirations, are simulated in a
previously validated computational model, further improved and with high spatial resolution, of a
prototype PEFC cathode. The model is isothermic, non-electrochemical and disregards water, as the
experimental system. However it has been shown to be useful when studying PEFCs, and a secondary
goal of this work is to corroborate this. Comparing simulation results between geometries, it is seen
that the hybrid geometry does inherit the characteristics of interest, i.e. high reactant utilization and
pressure drop, suggesting it may be of use in real PEFCs. Finally, a niche application is proposed based
on the reaction rate distribution of the hybrid geometry.
Como referenciar
BERUSKI, OTAVIO; KORKISCHKO, IVAN; LOPES, THIAGO; FONSECA, FABIO C.; PEREZ, JOELMA. A hybrid serpentine-interdigitated flow channel geometry for fuel cells. In: ENERGY TRANSITION RESEARCH AND INNOVATION, October 1-2, 2019, São Paulo, SP. Abstract... São Paulo: Research Centre for Gas Innovation, 2019. Disponível em: http://repositorio.ipen.br/handle/123456789/30867. Acesso em: 13 Feb 2025.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.