Effect of ambient conditions on performance and current distribution of a polymer electrolyte membrane fuel cell

被引:65
作者
Hottinen, T [1 ]
Noponen, M [1 ]
Mennola, T [1 ]
Himanen, O [1 ]
Mikkola, M [1 ]
Lund, P [1 ]
机构
[1] Helsinki Univ Technol, Lab Adv Energy Syst, FIN-02015 Helsinki, Finland
关键词
ambient conditions; current distribution; natural convection; PEMFC;
D O I
10.1023/A:1024184824662
中图分类号
O646 [电化学、电解、磁化学];
学科分类号
081704 ;
摘要
The performance and current distribution of a free-breathing polymer electrolyte membrane fuel cell (PEMFC) was studied experimentally in a climate chamber, in which temperature and relative humidity were controlled. The performance was studied by simulating ambient conditions in the temperature range 10 to 40 degreesC. The current distribution was measured with a segmented current collector. The results indicated that the operating conditions have a significant effect on the performance of the fuel cell. It was observed that a temperature gradient between the fuel cell and air is needed to achieve efficient oxygen transport to the electrode. Furthermore, varying the air humidity resulted in major changes in the mass diffusion overpotential at higher temperatures.
引用
收藏
页码:265 / 271
页数:7
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