RT Journal Article
T1 Investigation of PO4 3- oxyanion-doping on the properties of CaFe0.4Ti0.6O3 d for potential application as symmetrical electrodes for SOFCs
A1 Dos-Santos-Gómez, Lucía
A1 Porras-Vázquez, José Manuel
A1 Ramírez-Losilla, Enrique
A1 Marrero-López, David
A1 Slater, Peter
K1 Pilas de combustible
K1 Electroquímica
AB CaTi0.6-xFe0.4PxO3-d (0 x   0.075) perovskite series are investigated as potential symmetrical electrodesfor SOFCs. Pure phase compounds with a cubic perovskite structure (s.g. Pm3m) are obtained forx   0.025, while higher doping level leads to the formation of Ca10(PO4)6(OH)2 as secondary phase. TheP-doped compounds are structurally stable under reducing atmosphere unlike the undoped phase.Conductivity values of the P-doped samples are slightly higher than that of the undoped one, i.e. 0.11 and0.07 Scm 1 for CaTi0.575Fe0.4P0.025O3-d and CaTi0.6Fe0.4O3-d, respectively, at 750  C in air. The performanceof CaTi0.575Fe0.4P0.025O3-d acting simultaneously as both anode and cathode was also tested in a symmetricalsolid oxide fuel cell with a 240 mm thick YSZ electrolyte. Hence, these results show that PO4 3 units can be introduced into CaTi0.6Fe0.4O3-d perovskite structure, having beneficial effects on the electrochemicalperformance and the phase stability.
PB Elsevier
YR 2020
FD 2020
LK https://hdl.handle.net/10630/28447
UL https://hdl.handle.net/10630/28447
LA eng
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 20 ene 2026