Title of article :
Contact resistance between bipolar plate and gas diffusion layer in high temperature polymer electrolyte fuel cells
Author/Authors :
Prakash C. and Singdeo، نويسنده , , Debanand and Dey، نويسنده , , Tapobrata and Ghosh، نويسنده , , Prakash C.، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2014
Pages :
9
From page :
987
To page :
995
Abstract :
One of the major contributors to the ohmic loss in fuel cells originates at the interface between adjacent cell components. The compressive pressure used to achieve contact in cells should be carefully estimated to ensure that resistive losses arising from contact behavior remain minimal. In present work, a generic model is developed, capable of estimating contact resistance as a function contact pressure at the interface of graphite bipolar plate and carbon fiber based gas diffusion layer at different temperatures. A good agreement is observed between the results obtained from the model and experiments. Compressive pressure in the ranges of 3–4 MPa is found optimum for achieving low contact resistance. The contact resistance obtained for carbon paper and BPP while using recommended pressure lies between ∼9 and 4 mΩ cm2 considering the operating regime of HT-PEMFC (120–180 °C). Operating under similar conditions, the contact resistance values for carbon cloth and BPP is ∼13 to 7 mΩ cm2.
Keywords :
HT-PEMFC , Clamping pressure , contact resistance , Carbon paper , Carbon Cloth
Journal title :
International Journal of Hydrogen Energy
Serial Year :
2014
Journal title :
International Journal of Hydrogen Energy
Record number :
1866744
Link To Document :
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