Accardo, G. Spiridigliozzi, L. Dell'Agli, G. Yoon, S.P. Frattini, D. 2024-01-19T19:31:15Z 2024-01-19T19:31:15Z 2021-08-31 2019-10 2304-6740 https://pubs.kist.re.kr/handle/201004/119663 The reduction of the sintering temperature of doped ceria ceramics remains an open challenge for their real exploitation as electrolytes for intermediate temperature solid oxide fuel cell (IT-SOFCs) at the industrial level. In this work, we have used Bi (0.5 and 2 mol %) as the sintering aid for Gd (20 mol %)-doped ceria. Nano-sized powders of Bi/Gd co-doped ceria were easily synthesized via a simple and cheap sol-gel combustion synthesis. The obtained powders showed high sinterability and very good electrochemical properties. More importantly, even after prolonged annealing at 700 °C, both of the powders and of the sintered pellets, no trace of structural modifications, phase instabilities, or Bi segregation appeared. Therefore, the use of a small amount of Bi can be taken into account for preparing ceria-based ceramic electrolytes at low sintering temperatures. ？ 2019 by the authors. English MDPI Multidisciplinary Digital Publishing Institute Morphology and structural stability of bismuth-gadolinium co-doped ceria electrolyte nanopowders Article 10.3390/inorganics7100118 1 Inorganics, v.7, no.10 Inorganics 7 10 N scopus 000494479300010 2-s2.0-85074475605 Chemistry, Inorganic & Nuclear Chemistry Article RAPID DENSIFICATION SOLID-SOLUTIONS TEMPERATURE BI2O3 CONDUCTIVITY OXIDES AID Bismuth Doped-ceria electrolytes IT-SOFCs Morphology Phase stability Sintering aid