MATOS, B.R.ISIDORO, R.A.SANTIAGO, E.I.FONSECA, F.C.2015-04-292015-04-292014MATOS, B.R.; ISIDORO, R.A.; SANTIAGO, E.I.; FONSECA, F.C. Performance enhancement of direct ethanol fuel cell using Nafion composites with high volume fraction of titania. <b>Journal of Power Sources</b>, v. 268, p. 706-711, 2014. DOI: <a href="https://dx.doi.org/10.1016/j.jpowsour.2014.06.097">10.1016/j.jpowsour.2014.06.097</a>. Disponível em: http://repositorio.ipen.br/handle/123456789/23666.0378-7753http://repositorio.ipen.br/handle/123456789/23666The present study reports on the performance enhancement of direct ethanol fuel cell (DEFC) at 130 C with Nafion-titania composite electrolytes prepared by solegel technique and containing high volume fractions of the ceramic phase. It is found that for high volume fractions of titania (>10 vol%) the ethanol uptake of composites is largely reduced while the proton conductivity at high-temperatures is weakly dependent on the titania content. Such tradeoff between alcohol uptake and conductivity resulted in a boost of DEFC performance at high temperatures using Nafion-titania composites with high fraction of the inorganic phase.706-711openAccessdirect ethanol fuel cellstitanium oxidescomposite materialselectrolytessol-gel processproton conductivityArtigo de periódico26810.1016/j.jpowsour.2014.06.097https://orcid.org/0000-0002-5972-5933https://orcid.org/0000-0003-0708-2021