Various Temperatures Affecting Characteristics of Pt/C Cathode Catalysts for Polymer Electrolyte Membrane Fuel Cells
نویسندگان
چکیده
منابع مشابه
Evaluating Cathode Catalysts in the Polymer Electrolyte Fuel Cell
The polymer electrolyte membrane fuel cell (PEMFC) converts the chemical energy of hydrogen and oxygen (air) into usable electrical energy. At the cathode (the positive electrode), a considerable amount of platinum is generally required to catalyse the sluggish oxygen reduction reaction (ORR). This has implications regarding the cost in high-power applications, and for making a broad commercial...
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In this study, high current densities si.e., 0.9 A/cm2d have been obtained in a hydrogen/air polymer electrolyte fuel cell using nanoscale tungsten carbide as the anode catalyst and carbon supported platinum as the cathode catalyst under normal operating conditions of 80 °C and 3 atm. These results show a possibility of replacing precious metal anode catalysts with transition metal compounds fo...
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Graphitic carbon nitrides are investigated for developing highly durable Pt electrocatalyst supports for polymer electrolyte fuel cells (PEFCs). Three different graphitic carbon nitride materials were synthesized with the aim to address the effect of crystallinity, porosity, and composition on the catalyst support properties: polymeric carbon nitride (gCNM), poly(triazine) imide carbon nitride ...
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Oxygen transport across the cathode gas diffusion layer (GDL) in polymer electrolyte membrane (PEM) fuel cells was examined by varying the O2/N2 ratio and by varying the area of the GDL extending laterally from the gas flow channel under the bipolar plate (under the land). As the cathode is depleted of oxygen, the current density becomes limited by oxygen transport across the GDL. Oxygen deplet...
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Aalto University, P.O. Box 11000, FI-00076 Aalto www.aalto.fi Author Petri Kanninen Name of the doctoral dissertation Characterization of nanostructured catalysts and silicon microstructures in polymer electrolyte membrane fuel cells Publisher School of Chemical Technology Unit Department of Chemistry Series Aalto University publication series DOCTORAL DISSERTATIONS 76/2014 Field of research Ph...
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ژورنال
عنوان ژورنال: Korean Journal of Materials Research
سال: 2011
ISSN: 1225-0562
DOI: 10.3740/mrsk.2011.21.3.180