Optimum of Catalyst Layers for Direct Methanol Fuel Cells

Authors

Jun ZHANG
Lei Li
Li XU
Yu-xin WAN

Abstract

The performances of membrane electrode assemblies (MEAs)with various Pt loading were compared.The amount of Nafion in a catalytic layer was optimized,and the effect of Nafion loading on the resistance of MEAs was investigated with ac impedance spectroscopy.For a MEA with both Pt 4 mg/cm 2 in the anode and the cathode,suitable Nafion loading was 21.4 wt% in the anode.With 21.4 wt% Nafion loading in the cathode,the Direct Methanol Fuel Cells(DMFC) showed the highest performance at high current density.While,the DMFC performances came down,as Nafion loading increasing,for ohm and concentration polarization.

Keywords

Direct methanol fuel cells, Membrane electrode assembly, Solid polymer eelctrolyte, Electro_catalyst

DOI Link

https://doi.org/10.61558/2993-074X.3299

Publication Date

2002-08-28

Online Available Date

2002-08-28

Revised Date

2002-08-28

Received Date

2002-08-28

Recommended Citation

Jun ZHANG, Lei Li, Li XU, Yu-xin WAN. Optimum of Catalyst Layers for Direct Methanol Fuel Cells[J]. Journal of Electrochemistry, 2002 , 8(3): Article 14.
DOI: 10.61558/2993-074X.3299
Available at: https://jelectrochem.xmu.edu.cn/journal/vol8/iss3/14

References

[1]　RenXM ,ZelenayP ,ThomasS ,etal.RecentadvancesindirectmethanolfuelcellsatLosAlamosNationalLaboratory[J].J .PowerSources,2000,86:111～116.

[2]　McnicolBD ,RandDAJ,WilliamsKR .Directmethanol_airfuelcellsforroadtransortation[J].J .PowerSources,1999,83:15～31.

[3]　LiuL ,PuC ,ViswanathanR ,etal.,CarbonsupportedandunsuportedPt_Ruanodesforliquidfeeddirectmethanolfuelcells[J].ElectrochimicaActa,1998,43(24):3657～3663.

[4]　ScottK ,TaamaWM ,ArgyropoulosPMaterialaspectsoftheliquidfeeddirectmethanolfuelcell[J].J .Ap pliedElectrochemistry,1998,28:1389～1397.

[5]　BaldaufM ,PreidelW .Statusofthedevelopmentofadirectmethanolfuelcell[J].J .PowerSources,1999,84:161～166.

[6]　AricoAS ,ShuklaAK ,El_khatibKM ,etal.,Effectofcarbon_supportedandunsupportedPt_Ruanodesontheperformanceofsolid_polymer_electrolytedirectmethanolfuelcells[J].J.Appl.Electrochem.1999,26:671～676.

[7]　HorarthM ,ChristensenP ,HamnettA ,etal.,Thedesignandconstructionofhigh_performancedirectmethanolfuelcells,1.Liquid_feedsystems[J].J.PowerSources,1997,69:113～124.

[8]　JungHD ,LeeCH ,KimCS ,etal.,Performanceofadirectmethanolpolymerelectrolytefuelcell[J].J .PowerSources.1998,71:169～173.

[9]　MuellerJT ,UrbanPM .Characterizationofdirectmethanolfuelcellsbyacimpedance[J].J .PowerSources,1998,75:139～143.

[10]　DiardJP ,GorrecBLe,MontellaC ,etal.,Impedancemeasurementsofpolymerelectrolytemembranefuelcellsrunningonconstantload[J].J .PowerSources,1998,74:244～245.