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The effect of variable catalyst loading in electrodes on PEM fuel cell performance

Roshandel, R ; Sharif University of Technology | 2005

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  1. Type of Document: Article
  2. DOI: 10.1115/fuelcell2005-74039
  3. Publisher: American Society of Mechanical Engineers , 2005
  4. Abstract:
  5. Catalyst layers are one the important parts of the PEM fuel cells as they are the main place for electrochemical reaction taking place in anode and cathode of the cells. The amount of catalyst loading of this layer has a large effect on PEM fuel cell performance. Non-uniformity of reactant concentration could lead to a variation of current density in anode and cathode catalyst layer. The main reason for this phenomenon is porosity variation due to two effects: 1. compression of electrode on the solid landing area and 2. Water produced at the cathode side of diffusion layer. In this study the effect of variable current density in anode and cathode electrode on cell performance is investigated. It has shown that better cell performance could be achieved by adding a certain amount of catalyst loading to each electrode, with respect to the reactant concentration. Copyright © 2005 by ASME
  6. Keywords:
  7. Catalysts ; Concentration (process) ; Current density ; Electrodes ; Osmosis membranes ; Performance ; Catalyst loading ; Cathode catalyst layers ; Electrochemical reactions ; Proton exchange membrane (PEM) ; Fuel cells
  8. Source: 3rd International Conference on Fuel Cell Science, Engineering, and Technology, 2005, Ypsilanti, MI, 23 May 2005 through 25 May 2005 ; 2005 , Pages 145-152 ; 0791837645 (ISBN); 9780791837641 (ISBN)
  9. URL: https://asmedigitalcollection.asme.org/FUELCELL/proceedings/FUELCELL2005/37645/145/310384