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Dynamic Response during PEM Fuel Cell Loading-up
State Key Laboratory of Automotive Safety and Energy, Tsinghua University, Beijing 100084, China
* Author to whom correspondence should be addressed.
Received: 16 June 2009; Accepted: 25 June 2009 / Published: 7 July 2009
Abstract: A study on the effects of controlling and operating parameters for a Proton Exchange Membrane (PEM) fuel cell on the dynamic phenomena during the loading-up process is presented. The effect of the four parameters of load-up amplitudes and rates, operating pressures and current levels on gas supply or even starvation in the flow field is analyzed based accordingly on the transient characteristics of current output and voltage. Experiments are carried out in a single fuel cell with an active area of 285 cm2. The results show that increasing the loading-up amplitude can inevitably increase the possibility of gas starvation in channels when a constant flow rate has been set for the cathode; With a higher operating pressure, the dynamic performance will be improved and gas starvations can be relieved. The transient gas supply in the flow channel during two loading-up mode has also been discussed. The experimental results will be helpful for optimizing the control and operation strategies for PEM fuel cells in vehicles.
Keywords: PEM fuel cell; loading-up; gas dynamic response; starvation
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MDPI and ACS Style
Pei, P.; Yuan, X.; Gou, J.; Li, P. Dynamic Response during PEM Fuel Cell Loading-up. Materials 2009, 2, 734-748.
Pei P, Yuan X, Gou J, Li P. Dynamic Response during PEM Fuel Cell Loading-up. Materials. 2009; 2(3):734-748.
Pei, Pucheng; Yuan, Xing; Gou, Jun; Li, Pengcheng. 2009. "Dynamic Response during PEM Fuel Cell Loading-up." Materials 2, no. 3: 734-748.