Nafion-mesoporous silica composite electrolyte: properties and direct ethanol fuel cells performance
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Materials for Renewable and Sustainable Energy
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Nafion-mesoporous silica composites were
investigated aiming at improved performance of direct
ethanol fuel cells (DEFC) operating at high temperature.
Mesoporous silica (MPS) was synthesized by a sol–gel
technique and added as the inorganic filler into Nafion
membranes by casting process. The performance of DEFC
using both Nafion and Nafion-MPS composites were
evaluated by polarization curves and correlated to the
electrical and structural properties of the electrolytes in
ethanol environment inferred by impedance spectroscopy
and small angle X-ray scattering, respectively. The main
results show that Nafion-MPS composite electrolytes
exhibit improved performance that was related to a structural pining of the ionic clusters of ethanol-saturated
Nafion by the inorganic particles, which resulted in higher
proton conductivity of the composite. The experimental
results evidenced the relevance of a better understanding of
the properties of Nafion-based electrolytes to further
develop the direct alcohol fuel cells technology.
Como referenciar
AHMED, Z.; MATOS, B.R.; FLORIO, D.Z. de; REY, J.F.Q.; SANTIAGO, E.I.; FONSECA, F.C. Nafion-mesoporous silica composite electrolyte: properties and direct ethanol fuel cells performance. Materials for Renewable and Sustainable Energy, v. 5, n. 2, p. 1-5, 2016. DOI: 10.1007/s40243-016-0069-x. Disponível em: http://repositorio.ipen.br/handle/123456789/26480. Acesso em: 31 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.