Nanometric powders of doped and co-doped ceria based ceramics with spherical-like morphology and characterized by very low degree of agglomeration, were prepared by using a simple and cheap synthesis route, easily scalable on industrial level, based on an optimized co-precipitation process with ammonium carbonate as precipitating agent. The as-synthesized powders are completely converted to ceria with fluorite structure. The original morphology and the nanometric features are also preserved. Nearly perfect dense products were obtained after sintering at 1300 C for 3 h, as by SEM and density measurements. Electrochemical measurements proved that they are all suitable as electrolytes for IT-SOFC.

Engineered co-precipitation chemistry with ammonium carbonate for scalable synthesis and sintering of improved Sm 0.2 Ce 0.8 O 1.90 and Gd 0.16 Pr 0.04 Ce 0.8 O 1.90 electrolytes for IT-SOFCs

Spiridigliozzi, L.;Dell’Agli, G.;Marocco, A.;Pansini, M.;
2018

Abstract

Nanometric powders of doped and co-doped ceria based ceramics with spherical-like morphology and characterized by very low degree of agglomeration, were prepared by using a simple and cheap synthesis route, easily scalable on industrial level, based on an optimized co-precipitation process with ammonium carbonate as precipitating agent. The as-synthesized powders are completely converted to ceria with fluorite structure. The original morphology and the nanometric features are also preserved. Nearly perfect dense products were obtained after sintering at 1300 C for 3 h, as by SEM and density measurements. Electrochemical measurements proved that they are all suitable as electrolytes for IT-SOFC.
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11580/66019
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 42
social impact