Thermal neutron radiography of a passive proton exchange membrane fuel cell for portable hydrogen energy systems

Chaparro, Antonio M.; Ferreira-Aparicio, Paloma; Folgado, M.A.; Hübscher, Rico; Lange, Carsten; Weber, Norbert

doi:10.1016/j.jpowsour.2020.228668

Cited by 15 publications

(1 citation statement)

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“…The PEMFC is an air-breathing cell fed with ambient air (23 o C, 30% RH) in cathode, and dry hydrogen (Air-Liquide 99.999%, 0.5 bar) in the anode. The cell is therefore self-humidified, and fully passive, with current generation limited by transport processes under most operation conditions (15). Commercial gas diffusion electrodes are used in anode and cathode (FCSTORE, 0.25 mg Pt•cm -2 ; 10µm CL thickness; 30 wt% ionomer) and Nafion 212NR membrane (Ion Power).…”

Section: Methodsmentioning

confidence: 99%

Analysis of Hydrogen Feeding to the Anode of a PEMFC By a Transport Impedance Technique

Duque¹,

Molinero²,

Oller³

et al. 2022

ECS Trans.

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Transport properties in the anode of a PEMFC have been studied with an impedance technique that relates the hydrogen flow rate with the generated current, that we name current modulated hydrogen flow rate spectroscopy (CH2S). Measurements have been carried out under different experimental conditions, including inlet port characteristics, dc current, active area size, gas diffusion electrode type, and water saturation in the electrodes. The Nyquist plots show at least two kinetic processes with different time characteristics, related with anode architecture and/or gas diffusion electrode transport properties. The possibility to use CH2S to study mass transport properties of the gas diffusion electrodes is explored.

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Section: Methodsmentioning

confidence: 99%