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An investigation on anti-flooding of PEMFC with in-plate adverse-flow flow-field
LI Pengcheng 1,PEI Pucheng 2 *,HE Yongling 1,ZHANG Hongfei 2
1.School of Transportation Science and Engineering, Beihang University, Beijing 100191, China
2.State Key Laboratory of Automotive Safety and Energy, Tsinghua University, Beijing 100084, China
*Correspondence author
#Submitted by
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Funding: Specialized Research Fund for the Doctoral Program of Higher Education (No.No. 20090002110074)
Opened online: 6 March 2013
Accepted by: none
Citation: LI Pengcheng,PEI Pucheng,HE Yongling.An investigation on anti-flooding of PEMFC with in-plate adverse-flow flow-field[OL]. [ 6 March 2013] http://en.paper.edu.cn/en_releasepaper/content/4524116
 
 
The stoichiometric ratios and related regimes, which can promote anti-flooding of polymer electrolyte membrane fuel cell (PEMFC) with in-plate adverse-flow flow-field (IPAF), were investigated in this paper. Two flow combinations, which are the simple and complex adverse-flow between plates (ABP) that can be realized by IPAF, were employed to investigate. Constant stoichiometric ratios examination indicates that the complex ABP could improve anti-flooding of PEMFC better in the medium (greater than 200mA/cm2 and less than 1000mA/cm2) and high (greater than 1000mA/cm2) current densities than the simple ABP. More stoichiometric ratios were introduced to find the cathode critical stoichiometry. Under the condition of cathode critical stoichiometry, the maximal local relative humidity of both electrodes of complex ABP is equal to 100% and below while the anti-flooding of the cathode of simple ABP is not satisfactory in the medium and high current densities. Further study shows that the mechanism of fuel cell, which is the interdependence between the electrodes effect, can make significant contribution to anti-flooding.
Keywords:proton exchange membrane fuel cell; IPAF; stoichiometry; anti-flooding
 
 
 

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