Properties and DEFC tests of Nafion
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Journal of Membrane Science
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Nafion based composites are promising materials to improve the performance of direct ethanol fuel cells. In this
work, composite membranes of Nafion and titanate nanotubes functionalized with sulfonic acid groups were
prepared by melt-extrusion and tested in a direct ethanol fuel cell. Far and mid infrared spectroscopies evidenced
the formation of ionic bridges between the sulfonic acid groups of both functionalized nanoparticles and the
ionomer. Small angle X-ray scattering measurements revealed that the melt-extrusion method leads to an uniform
distribution of the inorganic phase in the ionomer matrix. Such structural analysis indicated that the
improved the proton conduction properties of the composites, even with the addition of a high concentration of
functionalized nanoparticles, are an outcome of the synergistic ionic network due to the hydrid organic/inorganic
proton conducting phases. However, an improvement of the fuel cell performance is observed for 2.5 wt%
of functionalized titanate nanotubes, which is a result of the lower ethanol crossover and the plasticizing effect of
the aliphatic segments of the organic moieties grafted at the surface of the titanate nanoparticles.
Como referenciar
MATOS, B.R.; GOULART, C.A.; TOSCO, B.; SILVA, J.S. da; ISIDORO, R.A.; SANTIAGO, E.I.; LINARDI, M.; SCHADE, U.; PUSKAR, L.; FONSECA, F.C.; TAVARES, A.C. Properties and DEFC tests of Nafion: functionalized titanate nanotubes composite membranes prepared by melt-extrusion. Journal of Membrane Science, v. 604, p. 1-7, 2020. DOI: 10.1016/j.memsci.2020.118042. Disponível em: http://repositorio.ipen.br/handle/123456789/31378. Acesso em: 20 Mar 2026.
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.