In situ fabrication of nafion-titanate hybrid electrolytes for high-temperature direct ethanol fuel cell
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Journal of Physical Chemistry, C
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The synthesis and characterization of a novel
Nafion-matrix nanocomposite by the in situ conversion of titania
particles into titanate nanofilaments such as nanotubes and
nanorods are reported. Titania nanoparticles grown inside Nafion
hydrophilic domains were converted by a microwave-assisted
hydrothermal reaction into the proton conducting titanate
nanotubes and nanorods. Detailed characterization by Raman
spectroscopy, X-ray diffraction, small-angle X-ray scattering, and
transmission electron microscopy evidenced an intimate interaction between titanate nanostructures and the ionomer hydrophilic phase. The favored localization of such high aspect ratio nanofilaments in the ionic phase of Nafion has a marked impact on
the properties of the composites. The experimental data showed enhanced mechanical stability at high temperature (∼130 °C)
that was correlated to a strong temperature dependence of the proton conductivity in the same temperature range. Such
properties contributed to a significant increase of the performance of direct ethanol fuel cells operating at high temperature
(∼130 °C) using hybrid Nafion−titanate electrolytes compared to commercial Nafion.
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MATOS, BRUNO R.; ISIDORO, ROBERTA A.; SANTIAGO, ELISABETE I.; LINARDI, MARCELO; FERLAUTO, ANDRE S.; TAVARES, ANA C.; FONSECA, FABIO C. In situ fabrication of nafion-titanate hybrid electrolytes for high-temperature direct ethanol fuel cell. Journal of Physical Chemistry, C, v. 117, n. 33, p. 16863-16870, 2013. DOI: 10.1021/jp405754v. Disponível em: http://repositorio.ipen.br/handle/123456789/4043. 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.