阳极
阴极
中子成像
质子交换膜燃料电池
材料科学
相对湿度
中子
入口
气体扩散
分析化学(期刊)
液态水
核工程
湿度
化学
膜
电极
核物理学
色谱法
气象学
物理
热力学
工程类
物理化学
机械工程
生物化学
作者
Yong-Song Chen,Huei Peng,Daniel S. Hussey,David L. Jacobson,Tuan Diep Tran,Tarek Abdel-Baset,Mark Biernacki
标识
DOI:10.1016/j.jpowsour.2007.03.076
摘要
Neutron radiography has been used for in situ and non-destructive visualization and measurement technique for liquid water in a working proton exchange membrane fuel cell (PEMFC). In an attempt to differentiate water distribution in the anode side from that in the cathode side, a specially designed cell was machined and used for the experiment. The major difference between our design and traditional flow field design is the fact the anode channels and cathode channels were shifted by a channel width, so that the anode and cathode channels do not overlap in the majority of the active areas. The neutron radiography experiments were performed at selected relative humidities, and stoichiometry values of cathode inlet. At each operating condition, the water distribution in anode/cathode gas diffusion layers (GDLs) was obtained. Image processing with four different spatial masks was applied to those images to differentiate liquid water in four different types of areas. Results indicate that the reactant gas relative humidity and stoichiometry significantly influence current density distribution and water distribution.
科研通智能强力驱动
Strongly Powered by AbleSci AI