Resumo

GUTIERREZ, OMAR et al. CONSTRUCTION AND EVALUATION OF A PROTON EXCHANGE FUEL CELL. Dyna rev.fac.nac.minas [online]. 2005, vol.72, n.145, pp.01-11. ISSN 0012-7353.

One design of a hydrogen proton exchange membrane fuel cell (PEMFC) is proposed. Porous carbon supported platinum electrodes were manufactured by impregnation, reduction and hot-press methods; noble metal loading of 0.4 mg/cm2 was achieved. The conditions to obtain the porous support were: composition of 15 % teflon and 85 % carbon, pressure of 100 Kgf/cm2, temperature of 300 ºC and 20 minutes of hot-pressing. The pattern of gas flow distribution was made possible by machined interdigitated channels into conductor graphite plates. Several tests were run varying the load resistance to obtain the polarization curves. Comparison with a commercial PEMFC is also made.

Palavras-chave : Fuel Cell; Polymer electrolyte; Catalysts Preparation; Membrane Electrode Assemblies; Polarization Curves.

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