MACHADO, M.MORAES, L.P.R.RODRIGUES, L.N.TABANEZ, M.FERRAZOLI, M.FONSECA, F.C.2020-03-022020-03-022019MACHADO, M.; MORAES, L.P.R.; RODRIGUES, L.N.; TABANEZ, M.; FERRAZOLI, M.; FONSECA, F.C. Evaluation of Fe-doped CGO electrolyte for application in IT-SOFCs. <b>ECS Transactions</b>, v. 91, n. 1, p. 1209-1216, 2019. DOI: <a href="https://dx.doi.org/10.1149/09101.1209ecst">10.1149/09101.1209ecst</a>. Disponível em: http://repositorio.ipen.br/handle/123456789/30856.1938-5862http://repositorio.ipen.br/handle/123456789/30856A challenge encountered with intermediate temperature solid oxide fuel cells (IT-SOFCs) is lowering the densification temperature of the doped ceria electrolyte and improving its ionic conductivity. Ceria doped with 10 mol% gadolinium oxide and 0, 1, 5 mol% iron oxide were synthesized by a low temperature precipitation route based on hexamethylenetetramine as the precipitating agent. The as-synthesized precursors are nanocrystalline powders with a homogeneous morphology. Co-doping with Fe3+ changes the sintering behaviour of the doped cerium oxide and favours densification at lower temperatures. Through a comprehensive elementary, structural, microstructural and electrochemical analysis of the co-doped cerium oxide, it was established the doping mechanism of Fe3+ and its effect on the bulk and grain boundary conductivities. The overall aim is to evaluate its suitability for application as an electrolyte in IT-SOFC applications.1209-1216openAccessdoped materialsceriumsolid oxide fuel cellscerium oxidesimpedancespectroscopygadoliniumstoichiometryoxygenArtigo de periódico19110.1149/09101.1209ecst0000-0003-0708-2021https://orcid.org/0000-0003-0708-2021Sem Percentil41.00