2023
DOI: 10.1002/aesr.202300179
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30 μm Thin Anode Gas Diffusion Layers for Optimized PEM Fuel Cell Operation at 120 °C and Low Relative Humidity

Koray Yildirim,
Hassan Fadlullah,
Claudia Schwarz
et al.

Abstract: Achieving higher temperature operation above 100 °C, while increasing the volumetric power density are key targets in current fuel cell development. In this work, a novel type of polyvinylidene fluoride and graphite based microporous film of only 30 μm thickness, acting as thin alternative to typical gas diffusion layers (GDLs) on the anode side of a hydrogen fuel cell is reported. Ex situ measurements (contact angle, electric conductivity, gas permeability measurements, and scanning electron microscopy (SEM))… Show more

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Cited by 4 publications
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“…Furthermore, under the premise that this hypothesis is correct, it suggests that the impact of the ionomer’s specific adsorption, traditionally considered to have a negative impact under all operating conditions, may be small in the actual operating current density region of MEAs where sufficient water is present. For future applications of HDVs requiring high-temperature operation and performance realization at 20–30% RH, aiming at greater efficiency and cost reduction, this hypothesis could provide important insights when discussing the influence of ionomer-specific adsorption under such operating conditions. , Further discussion will be needed on the validity of the above hypothesis; however, from the fact that the impact of the ionomer structure is significant, we believe that carefully examining the correlation with ionomers with various molecular structures will aid in the verification of the hypothesis. In addition, the occurrence of the step is not necessarily universal.…”
Section: Resultsmentioning
confidence: 93%
“…Furthermore, under the premise that this hypothesis is correct, it suggests that the impact of the ionomer’s specific adsorption, traditionally considered to have a negative impact under all operating conditions, may be small in the actual operating current density region of MEAs where sufficient water is present. For future applications of HDVs requiring high-temperature operation and performance realization at 20–30% RH, aiming at greater efficiency and cost reduction, this hypothesis could provide important insights when discussing the influence of ionomer-specific adsorption under such operating conditions. , Further discussion will be needed on the validity of the above hypothesis; however, from the fact that the impact of the ionomer structure is significant, we believe that carefully examining the correlation with ionomers with various molecular structures will aid in the verification of the hypothesis. In addition, the occurrence of the step is not necessarily universal.…”
Section: Resultsmentioning
confidence: 93%