Abstract
A typical Ce0.85Gd0.15O2−δ (GDC15) composition of CeO2−Gd2O3 system is synthesized by modified sol−gel technique known as citrate-complexation. TG–DTA, XRD, FT-IR, Raman, FE-SEM/EDX and ac-impedance analysis are carried out for structural and electrical characterization. XRD pattern confirmed the well crystalline cubic fluorite structure of GDC15 after calcining at 873K. Raman spectral bands at 463, 550 and 600cm−1 are also in agreement with these structural features. FE-SEM image shows well-defined grains separated from grain boundary and good densification. Ac-impedance studies reveal that GDC15 has oxide ionic conductivity similar to that reported for Ce0.9Gd0.1O2−δ (GDC10) and Ce0.8Gd0.2O2−δ (GDC20). Ionic and electronic transference numbers at 673K are found to be 0.95 and 0.05, respectively. This indicates the possible application of GDC15 as a potential electrolyte for IT-SOFCs.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
