Abstract
The correlation between the degradation of membrane electrode assembly (MEA) and the operation pressure during the load cycling test was studied. The precipitated Pt, obtained as Pt band, and the thickness of the membrane were observed in the section of the tested MEAs. The precipitated ratio of Pt was determined by a method that involved image processing. An increase in the relative volume of precipitated Pt and a reduction in the thickness of the membrane depending on the operation pressure were observed.
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