FONSECA, F.C.TABUTI, F.MORAES, T.ABE, R.GUIMARAES, R.M.MIURA, Y.FUKUYAMA, Y.2022-03-172022-03-172021FONSECA, F.C.; TABUTI, F.; MORAES, T.; ABE, R.; GUIMARAES, R.M.; MIURA, Y.; FUKUYAMA, Y. Exploring the stability of direct ethanol solid oxide fuel cells at intermediate temperature. <b>ECS Transactions</b>, v. 103, n. 1, p. 169-178, 2021. DOI: <a href="https://dx.doi.org/10.1149/10301.0169ecst">10.1149/10301.0169ecst</a>. Disponível em: http://repositorio.ipen.br/handle/123456789/32805.1938-5862http://repositorio.ipen.br/handle/123456789/32805Anode supported fuel cells were tested in direct (no water added) bioethanol at intermediate temperature (600°C and 700°C). The standard fuel cell has reasonable short-term stability under dry ethanol if current is continuously drawn at a minimum fuel utilization factor at 700ºC. However, the YSZ/Ni anode develops carbon deposits as inferred from post fuel cell test analyses and fixed bed steam reforming catalytic tests at 600°C. Thus, an active catalytic layer with tailored properties for ethanol internal reforming was studied. Initial tests investigated the Ir/gadolinium-doped ceria catalysts previously proven stable at 850°C. The main results have shown that the catalytic layer has no significant effect on the performance of the fuel cell running under hydrogen. The use of a ceria-based catalytic layer has enhanced the stability of the fuel cell under dry ethanol at 700°C, but stable operation at 600°C requires the development of more active catalyst.169-178openAccessethanolsolid oxide fuel cellsdirect ethanol fuel cellsraman spectraArtigo de periódico110310.1149/10301.0169ecst0000-0003-0708-2021https://orcid.org/0000-0003-0708-2021Sem Percentil31.00