Nafion/CsHSO4 hybrids SAXS/ WAXS/ XAS studies
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2018
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BRAZILIAN MRS MEETING, 17th
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Nafion (Developed by DuPont) has been largely employed as solid electrolytes in
Polymer Electrolyte Membranes (PEM) fuel cell applications. However, mild
conditions (intermediates temperatures (~80 C), high relative humidity, and pure
hydrogen fuel) are required to yield high fuel cell performances [1]. Nafion-based
hybrid materials have been suggested as potential candidates to improve the
performance of PEM fuel cells at higher temperatures and lower humidity
conditions whilst maintaining the chemical stability and mechanical strength of
the standard electrolyte. Hybrid materials are generally synthesized by the
incorporation of hydrophilic inorganic nanoparticles in the polymer structure
aiming at PEM operating above 100 °C [2]. The precursor solution impregnates
the Nafion membrane and a subsequent thermal treatment induces the nucleation
and growth of the nanoparticles inside the membrane. In the last decade, great
efforts have been focused on the investigation of the property-structure
relationship to improve the technological applications [3]. The aim of our study
is to study the mechanism of growth of the nanoparticles embedded at the Nafion
membranes by SAXS (Small Angle X Ray Scattering)/ WAXS (Wide Angle X Ray
Scattering) as well as to understand the chemical environment of the
nanoparticles within the polymeric internal structure by XAS (X Ray Absorption
Spectroscopy) in the Caesium (Cs) K-edge. The main results shown a strong
relationship between the hybrid membranes morphology and the
concentration/synthetic route of the inorganic species.
Como referenciar
REY, JOSE F.Q.; MATOS, BRUNO R.; LONGO, ALESSANDRO; FONSECA, FABIO C.; MERINO, DANIEL H. Nafion/CsHSO4 hybrids SAXS/ WAXS/ XAS studies. In: BRAZILIAN MRS MEETING, 17th, September 16-20, 2018, Natal, RN. Abstract... São Carlos: Aptor Software, 2018. p. 230-230. Disponível em: http://repositorio.ipen.br/handle/123456789/30322. Acesso em: 30 Dec 2025.
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