Abstract
In this paper, we reported a new method for metal-supported SOFC single cell preparation. Single cell with NiO and Fe2O3 (Ni:Fe=1:1) anode support, Gd0.1Ce0.9O1.95 (GDC) electrolyte and La0.4Sr0.6Co0.2Fe0.7Nb0.1O3-δ (LSCFN) cathode was fabricated through traditional tape-casting, drop-coating, co-sintering and screen-printing. Then the as-prepared single cell was reduced at 700 oC for 1h under 5%H2-95%N2 to get the support reduced. Results show that after annealing the whole cell at 700 oC in the reducing atmosphere, the oxide support was mostly reduced into metal, while the LSCFN cathode maintained its perovskite structure. Electrical impedance spectroscopy tests were carried out with symmetrical LSCFN electrodes reduced at 500-700 oC. Results showed that the polarization resistance lowered down with the reduction temperature increased, which may possibly due to the more oxygen vacancies created at higher reduction temperature.
Sign-in/Register to access full text options 
Free) 
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 call
