In situ water sensing in a Nafion membrane by fluorescence spectroscopy

被引：33
作者：
Patil, YP
Seery, TAP
Shaw, MT
Parnas, RS [1 ]
机构：
[1] Univ Connecticut, Polymer Program, Inst Mat Sci, Dept Chem Engn, Storrs, CT 06269 USA
[2] Univ Connecticut, Dept Chem, Storrs, CT 06269 USA
来源：
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH | 2005年 / 44卷 / 16期
关键词：
D O I：
10.1021/ie0491286
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
The objective of this work is to use fiber-optic fluorescence spectroscopy to detect changes in the Nafion membrane water content in a fuel cell at several operating conditions. The fluorophore Rhodamine 6G was found to be sensitive to the membrane water content. The fluorescence measurement of the membrane water content predicted the dynamic response of the fuel cell during startup, during operating condition changes, and during many small perturbations. A decrease in the membrane water content was observed as the fuel cell current was increased. The decrease in the water content is attributed to mass-transfer limitations at the anode side of the membrane.
引用
收藏
页码：6141 / 6147
页数：7
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