拉曼光谱
电解质
膜
显微拉曼光谱
纳米技术
共焦
水运
质子交换膜燃料电池
材料科学
电极
化学工程
化学
环境科学
物理
光学
物理化学
工程类
水流
环境工程
生物化学
作者
F. Henn,Patrice Huguet,Arnaud Morin,Gérard Gebel,Y. Lanteri,Zhé Peng,A. K. Sutor
出处
期刊:Fuel Cells
[Wiley]
日期:2014-02-06
卷期号:14 (5): 677-693
被引量:19
标识
DOI:10.1002/fuce.201300236
摘要
Abstract An operating PEMFC for commercial use must be able to adapt to variations in power demands and operating conditions while maintaining near optimal performance. Current research shows that one of the main issues affecting power output, stability, and longevity is the quantity and distribution of water in the system. The last are strongly affected by the sorption and transport properties of the polymer electrolyte. Thus, the need for a fundamental understanding of water transport in the PEMFC membrane‐electrode assembly has motivated, over the past few years, the development of new operando diagnostic tools sensitive to the membrane hydration. Among these, the most recent technique is based on confocal Raman microspectroscopy. This tutorial review is devoted to the illustration of the basis of this method, with a particular focus on the Raman signal processing needed to obtain reliable through‐plane water concentration profiles across PFSA membranes. Then, the potential of in situ and operando μ‐Raman is highlighted by reviewing the few studies reported to date, completed by the most recent results obtained by our group. Finally, advantages and drawbacks of operando Raman microspectroscopy are shortly discussed.
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