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Scaleup Effect on Performance of Proton Exchange Membrane Fuel Cell


Paper Type 
Contributed Paper
Title 
Scaleup Effect on Performance of Proton Exchange Membrane Fuel Cell
Author 
Hong Leelasupakorn, Amaraporn Kaewchada, Watcharapon Traisantikul, Withawin Tiengtrakarnsuk, Sunun L
Email 
leelasupakorn@yahoo.com and terdthai.v@ku.ac.th
Abstract:
Applications of fuel cells in industries, transportations, power plant, or various electrical devices requires scaling up from a small fuel cell to a larger one with enough power for the need of  each device.  In this study, two sizes of  the proton exchange membrane fuel cells were used. The MEA were scaled up from 5 to 50 cm2 in active areas.  The platinum loading was 0.2 mg/cm2 on both cathode and anode sides of each cell. The experimental results gave the maximum power output from 5 and 50 cm2 fuel cells at 1.8 and 14.6 watts, respectively. It was found that the power outputs were not increased in direct proportion to the MEA size when the 5 cm2 cell was scaled up to 50 cm2 fuel cell. The 50 cmfuel cell produced less voltage than 5 cm2 fuel cell at the same current density, especially when it was operated in the medium and high current densities, which were in the ohmic and mass transport loss regions. However, in the activation loss region, the polarization curves of  5 and 50 cmwere not significantly different.  The cell performance of  50 cmfuel cell decreased because larger area resulted in less homogeneity in catalyst coating, and more water production. The later led to more difficulty in water management in the cell.  In addition the less surface flatness in a larger fuel cell can reduce the surface contact leading to lower cell performance.  In addition, the effect of operating temperature in a 50 cm2 cell was in the same trend as that in a smaller cell. Therefore, the temperature control for uniformity inside the larger fuel cell is a very important criterion.
Start & End Page 
89 - 94
Received Date 
2007-09-26
Revised Date 
Accepted Date 
2007-10-24
Full Text 
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Keyword 
Protion Exchange Membrane Fuel Cell, Scaleup, Performance
Volume 
Vol.35 No.1 (JANUARY 2008)
DOI 
Citation 
Leelasupakorn H., Kaewchada A., Traisantikul W., Tiengtrakarnsuk W. and L S., Scaleup Effect on Performance of Proton Exchange Membrane Fuel Cell, Chiang Mai J. Sci., 2008; 35(1): 89-94.
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Chiang Mai Journal of Science

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