The lifetime performance was investigated by assembling the single cell of PEMFC under a series of holding forces ranging from 0.45 to 11.3 MPa and reassembled under optimal holding force.The polarization and power density curves were obtained during different periods of operating time up to 2000 hours and the fuel cell catalyst activation regions in the polarization curves were analyzed to evaluate the electrochemical kinetic parameters.The results revealed that the holding forces affected not only the internal contact resistances,but also the kinetic parameters which might be caused by the change of the MEA microstructures.The apparent degradation observed at higher current densities after 2000 h lifetime test under the optimal holding force of 3.2 MPa was due mainly to the increases of the catalyst particle sizes.However,the agglomeration in the particle sizes of cathode catalyst after 2000 h lifetime test at 3.2 MPa was less severe than that without optimal assembly force control.


proton exchange membrane fuel cell, contact resistance, assembly force, membrane electrode assembly, lifetime performance

Publication Date


Online Available Date


Revised Date


Received Date



[1]Hinds G.Performance and durability of PEMfuel cells:A review.NPL Report DEPC-MPE 002,Vol.Tedding-ton Middlesex UK TW11[M].0LW:National PhysicalLaboratory,2004.
[2]Cheng X,Chen L,Peng C,et al.Catalyst microstruc-ture examination of PEMFC membrane electrode assem-blies vs.time[J].Journal of the Electrochemical Soci-ety,2004,151:48-52.
[3]Cheng X,Peng C,You M,et al.Characterization ofcatalysts and membrane in DMFC lifetime testing[J].Electrochimica Acta,2006,51:4620-4625.
[4]Knights S D,Colbow K M,St-Pierre J,et al.Agingmechanisms and lifetime of PEFC and DMFC[J].Jour-nal of Power Sources 2004,127:127-134.
[5]Cleghorn S J C,Mayfield D K,Moore D A,et al.Apolymer electrolyte fuel cell life test:3 years of continu-ous operation[J].Journal of Power Sources,2006,158:446-456.
[6]Huang X,Solasi R,Zou Y,et al.Mechanical endur-ance of polymer electrolyte membrane and PEMfuel celldurability[J].Journal of Polymer Science Part B:Pol-ymer Physics,2006,44:2346-2357.
[7]Santarelli M G,Torchio M F.Experimental analysis ofthe effects of the operating variables on the performanceof a single PEMFC[J].Energy Conversion and Man-agement,2007,48:40-51.
[8]Neyerlin K C,Gasteiger Hubert A,Mittelsteadt CortneyK,et al.Effect of relative humidity on oxygen reductionkinetics in a PEMFC[J].Journal of the Electrochemi-cal Society,2005,152:1073-1080.
[9]Cho E,Lee J,Kim H,et al.Effects of shutdown proce-dure on long-term stability of PEM fuel cells[C]//PBFC2_B-Second International Conference on PolymerBatteries and Fuel Cells Vol.Las Vegas:Nevada,2005.
[10]Lee Wk,Ho C H,Zee J W V,et al.The effects ofcompression and gas diffusion layers on the perform-ance of a PEM fuel cell[J].Journal of PowerSources,1999,84:45-51.
[11]Zhou P,Wu C W,Ma G J.Contact resistance predic-tion and structure optimization of bipolar plates[J].Journal of Power Sources,2006,159:1115-1122.
[12]Ge J,Higier A,Liu H.Effect of gas diffusion layercompression on PEM fuel cell performance[J].Jour-nal of Power Sources,2006,159:922-927.
[13]Kumar A,Reddy R G.Modeling of polymer electrolytemembrane fuel cell with metal foam in the flow-field ofthe bipolar/end plates[J].Journal of Power Sources,2003,114:54-62.
[14]Wang H,Sweikart MA,Turner J A.Stainless steel asbipolar plate material for polymer electrolyte membranefuel cells[J].Journal of Power Sources,2003,115:243-251.
[15]Lee S J,Huang C H,Lai J J,et al.Corrosion-resist-ant component for PEMfuel cells[J].Journal of Pow-er Sources,2004,131:162-168.
[16]Mishra V,Yang F,Pitchumani R.Measurement andprediction of electrical contact resistance between gasdiffusion layers and bipolar plate for applications toPEM fuel cells[J].Journal of Fuel Cell Science andTechnology,2004,1:2-9.
[17]Ihonen J,Jaouen F,Lindbergh G,et al.Anovel poly-mer electrolyte fuel cell for laboratory investigationsand in-situ contact resistance measurements[J].Elec-trochimica Acta,2001,46:2899-2911.
[18]Scholta J,Escher G,Zhang W,et al.Investigation onthe influence of channel geometries on PEMFC per-formance[J].Journal of Power Sources,2006,155:66-71.



To view the content in your browser, please download Adobe Reader or, alternately,
you may Download the file to your hard drive.

NOTE: The latest versions of Adobe Reader do not support viewing PDF files within Firefox on Mac OS and if you are using a modern (Intel) Mac, there is no official plugin for viewing PDF files within the browser window.