Simultaneous measurement of water and temperature in electrode offuel cell using near-infrared reflectance spectroscopy and activecontrol of water transport

采用近红外反射光谱法对聚合物电解质燃料电池（PEFC）阴极催化层（CL）和气体扩散层（GDL）界面处的液态水聚集进行了定量研究，并讨论了GDL疏水性和MPL添加对阴极CL/GDL界面处水传输的影响.利用红外热像技术研究了运行中的燃料电池内部的反应分布。

In this study, the liquid water accumulation at the interface between the catalyst layer (CL) and gas diffusion layer (GDL) of a polymer electrolyte fuel cell (PEFC) was quantitatively evaluated using near-infrared reflectance spectroscopy, and the effects of GDL hydrophobicity and MPL addition on the water transport at the cathode CL/GDL interface were discussed. Furthermore, the reaction distribution inside the operating fuel cell was investigated based on infrared thermographic technique.