Nuclear magnetic resonance microimaging investigation of membrane electrode assembly of fuel cells: morphology and solvent dynamics

Zhen Wu, Chien Shun Wu, Peter Po Jen Chu, Shangwu Ding

研究成果: 雜誌貢獻期刊論文同行評審

10 引文 斯高帕斯(Scopus)

摘要

The structure and solvent (water, methanol, etc.) dynamics of a number of fuel membrane electrode assembly (MEA) samples are studied with nuclear magnetic resonance microimaging with spatial resolution of tens of micrometers. The micrometer-scale inhomogeneity of the samples is observed and confirmed with various weighting methods. In particular, diffusion coefficients at different positions in MEA are clearly differentiated. Furthermore, chemical shift selection imaging enables one to investigate the spatial distribution and dynamics of individual chemical groups. These types of information offer us insights into the working principle of fuel cell and pave the way to in situ studies of operating fuel cells.

原文???core.languages.en_GB???
頁(從 - 到)871-878
頁數8
期刊Magnetic Resonance Imaging
27
發行號6
DOIs
出版狀態已出版 - 7月 2009

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