Cobalt-free perovskite Pr0.5Sr0.5Fe1 xCuxO3 d(PSFC) as a cathodematerial for intermediate temperature solid oxide fuel cells
| dc.contributor.author | Nascimento, Rubens Maribondo do | |
| dc.contributor.author | Moura, Caroline Gomes | |
| dc.contributor.author | Fagg, Duncan Paul | |
| dc.contributor.author | Grilo, João Paulo de Freitas | |
| dc.contributor.author | Macedo, Daniel Araújo de | |
| dc.contributor.author | Cesário, Moises Rômolos | |
| dc.date.accessioned | 2022-01-05T14:38:56Z | |
| dc.date.available | 2022-01-05T14:38:56Z | |
| dc.date.issued | 2016-09-01 | |
| dc.description.resumo | SFC (Pr0.5Sr0.5Fe1 xCuxO3 d) is a new perovskite-type oxide that has gained considerable attention ascathode material for intermediate temperature solid oxide fuel cells (IT-SOFCs), due to its high mixedionic-electronic conductivity below 800 C. In this work, PSFC (Pr0.5Sr0.5Fe1 xCuxO3 d,x¼0.2 and 0.4)powders were synthesized by the citrate method and structurally characterized by X-ray diffractometry.Screen-printed cathodes were sintered at 1050 C and electrochemically characterized by impedancespectroscopy at 600e800 C in pure oxygen. The area specific resistances (ASR) of thePr0.5Sr0.5Fe0.8Cu0.2O3 dmaterial are shown to be competitive with typical values reported for cobalt-based cathodes in the measured temperature range, while, importantly, offering a significantly loweractivation energy, 0.62 eV. The thermal expansion coefficients of these Co-free cathodes are in the rangeof 13e15 10 6 C 1, in a temperature range 200e650 C, demonstrating a good thermal compatibilitywith gadolinia doped ceria (CGO) electrolytes | pt_BR |
| dc.identifier.citation | MOURA, Caroline G.; GRILO, João Paulo de F.; MACEDO, Daniel A.; CESÁRIO, Moisés R.; FAGG, Duncan Paul; NASCIMENTO, Rubens M. Cobalt-free perovskite Pr0.5Sr0.5Fe1−xCuxO3−δ (PSFC) as a cathode material for intermediate temperature solid oxide fuel cells. Materials Chemistry and Physics, [S.L.], v. 180, p. 256-262, set. 2016. Disponível em: https://www.sciencedirect.com/science/article/abs/pii/S0254058416304175?via%3Dihub. Acesso em: 05 abr. 2021. http://dx.doi.org/10.1016/j.matchemphys.2016.06.005. | pt_BR |
| dc.identifier.doi | 10.1016/j.matchemphys.2016.06.005 | |
| dc.identifier.issn | 0254-0584 | |
| dc.identifier.uri | https://repositorio.ufrn.br/handle/123456789/45570 | |
| dc.language | en | pt_BR |
| dc.publisher | Elsevier | pt_BR |
| dc.rights | Attribution-NonCommercial-NoDerivs 3.0 Brazil | * |
| dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/3.0/br/ | * |
| dc.subject | Oxides | pt_BR |
| dc.subject | Chemical synthesis | pt_BR |
| dc.subject | Impedance spectroscopy | pt_BR |
| dc.subject | X-ray diffraction | pt_BR |
| dc.subject | Thermal expansion | pt_BR |
| dc.title | Cobalt-free perovskite Pr0.5Sr0.5Fe1 xCuxO3 d(PSFC) as a cathodematerial for intermediate temperature solid oxide fuel cells | pt_BR |
| dc.type | article | pt_BR |
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