Spatially resolved oxygen reaction, water, and temperature distribution
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Applied Energy
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In situ and ex situ spatially-resolved techniques are employed to investigate reactant distribution and its impacts
in a polymer electrolyte fuel cell. Temperature distribution data provides further evidence for secondary flows
inferred from reactant imaging data, highlighting the contribution of convection in heat as well as reactant
distribution. Water build-up from neutron tomography is linked to component degradation, matching the pattern seen in the reactant distribution and thus suggesting that high, non-uniform local current densities shape degradation
patterns in fuel cells. The correlations shown between different techniques confirm the use of the
versatile reactant imaging technique, which is used to compare commonly used flow field designs. Among
serpentine-type designs, the single serpentine is superior in both equivalent current density and reactant distribution,
showing large contributions from convective flow. On the other hand, the interdigitated design is
shown to produce larger equivalent current densities, while showing a somewhat poorer reactant distribution.
Considering the correlations drawn between the techniques, this suggests that the interdigitated design compromises
durability in favour of power output. The results highlight how established techniques provide a robust
background for the use of a new and flexible imaging technique toward designing advanced flow fields for
practical fuel cell applications.
Como referenciar
LOPES, THIAGO; BERUSKI, OTAVIO; MANTHANWAR, AMIT M.; KORKISCHKO, IVAN; PUGLIESI, REYNALDO; STANOJEV, MARCO A.; ANDRADE, MARCOS L.G.; PISTIKOPOULOS, EFSTRATIOS N.; PEREZ, JOELMA; FONSECA, FABIO C.; MENEGHINI, JULIO R.; KUCERNAK, ANTHONY R. Spatially resolved oxygen reaction, water, and temperature distribution: experimental results as a function of flow field and implications for polymer electrolyte fuel cell operation. Applied Energy, v. 252, p. 1-13, 2019. DOI: 10.1016/j.apenergy.2019.113421. Disponível em: http://repositorio.ipen.br/handle/123456789/30032. Acesso em: 30 Dec 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.