English to French Tech/Engineering Electronics / Elect Eng fuel cell membrane electrode assembly

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However, since the electrolyte membrane and the layer (A) were a polymer material not containing aromatic hydrocarbon having an anionic group on the main chain, a methanol permeation rate of the membrane electrode assembly was large and 13.0 mmol/cm2/min, and as for the voltage retention, a voltage at an initial time was 0.21 V and a voltage after generating a constant current for 100 hours was 0.1 V, and durability was as low as 48%. And, an output at a passive evaluation exhibited 10 mW/cm2 and was a low output. The cell after these evaluations was knocked down, and the membrane electrode assembly was taken out and observed visually. Consequently, it was found that peeling occurred at the interface between the electrode and the electrolyte membrane due to swelling of an aqueous solution of methanol and a part of the catalyst collapsed and flowed away.