Development and electrochemical studies of membrane electrode assemblies for polymer electrode alkaline fuel cells using FAA membrane and ionomer
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Journal of Power Sources
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This paper provides guidelines on the fabrication and operation of alkaline fuel cells using quaternary
ammonium hydroxide anion exchange membrane (FAA-3 e fumatech), and includes a discussion of the
electrode kinetic parameters based on the composition of the catalytic layer. The best peak power
density performance, 223 mW cm 2 was obtained with an electrode formed from Pt/C, 0.8 mgPt cm 2
and 25% of FAA-3 ionomer in the catalyst layer for both the cathode and the anode. We demonstrate that
the platinum loading can be lowered to values close to 0.5 mgPt cm 2
, without appreciably affecting the
fuel cell performance characteristics. The experimental fuel cell data were analyzed using theoretical
models of the electrode structure and its kinetics studied over the assembling parameters. We show that
most of the electrode systems present limiting currents, with some showing diffusion limitations in the
gas channels and/or in the ionomer film covering the catalyst nanoparticles. We also provide some
general strategies using Tafel slopes on evaluating the ionomer interaction with the electrode kinetics for
the oxygen reduction reaction.
Como referenciar
CARMO, MARCELO; DOUBEK, GUSTAVO; SEKOL, RYAN C.; LINARDI, MARCELO; TAYLOR, ANDRE D. Development and electrochemical studies of membrane electrode assemblies for polymer electrode alkaline fuel cells using FAA membrane and ionomer. Journal of Power Sources, v. 230, p. 169-175, 2013. DOI: 10.1016/j.jpowsour.2012.12.015. Disponível em: http://repositorio.ipen.br/handle/123456789/8431. Acesso em: 30 Dec 2025.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.