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- W2260647029 abstract "Water management in a polymer electrolyte fuel cell (PEFC) is vital to enhance performance and durability. In this study, transport of water inside MEA (membrane electrode assembly) and GDL (gas diffusion layer) layers of an operating (in situ) fuel cell was observed using the synchrotron X-ray micro-imaging technique. The synchrotron X-ray imaging technique having high spatial and temporal resolutions was found to be suitable for observing the dynamic behavior of liquid layer and water distribution inside the PEFC. A single-cell test kit of PEFC was specially designed for this X-ray imaging experiments. Temporal variation of gray level in the PEFC components, such as MEA, GDL and endplate was investigated with varying loading condition. As a result, the PEFC components were clearly distinguished by image pattern and gray level difference in the X-ray images captured. The gray level distribution is roughly symmetric with respect to MEA layer. The gray level at GDL decreases with lapse of time, indicating the increase of H₂O concentration with time." @default.
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- W2260647029 date "2009-05-01" @default.
- W2260647029 modified "2023-09-24" @default.
- W2260647029 title "Visualization of water management in a PEFC using a synchrotron" @default.
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