DRESCH, M.A.MATOS, B.R.FONSECA, F.C.LINARDI, M.REY, J.F.Q.SANTIAGO, E.I.2014-11-192014-11-192015-04-012014-11-192014-11-192015-04-01DRESCH, M.A.; MATOS, B.R.; FONSECA, F.C.; LINARDI, M.; REY, J.F.Q.; SANTIAGO, E.I. Morphological investigation of nafion and nafion-SiOsub(2)-hybrid membranes by SAXS analysis in dry and wet environmentas. In: INTERNATIONAL CONFERENCE ON ADVANCED MATERIALS, 11th, September 20-25, 2009, Rio de Janeiro, RJ. <b>Abstract...</b> Disponível em: http://repositorio.ipen.br/handle/123456789/22863.http://repositorio.ipen.br/handle/123456789/22863– Nafion-SiO2 hybrid membranes were prepared by the incorporation of SiO2 into commercial Nafion 115 for applications as electrolytes in proton exchange membrane fuel cells (PEMFC) operating at high temperature (~130ºC). These hybrids were produced by conventional in-situ sol-gel method using Tetraethyl Ortosilicate (TEOS) as the silicon precursor, and some synthesis parameters, such as the nature of alcohol (methanol, ethanol, and 2-propanol) used as solvent in the sol-gel reaction were evaluated. The morphological changes in polymeric matrix were analyzed by water-uptake and small angle X-ray scattering measurements (SAXS). These hybrids were tested in single cells by polarization curves at high temperature.openAccesssilicon oxideselectrolytesproton exchange membrane fuel cellshybridizationtemperature range 0400-1000 ksol-gel processsiliconprecursormorphological changessmall angle scatteringResumo de eventos científicoshttps://orcid.org/0000-0003-0105-6519https://orcid.org/0000-0002-5972-5933https://orcid.org/0000-0003-0708-2021