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Synthesis and sintering of Ce1-xGdxO2-x/2 nanopowders via chemical routes.

Published online by Cambridge University Press:  11 February 2011

Agusti Sin
Affiliation:
Pirelli Labs, C.2172, Viale Sarca 222, I-20126 Milan, Italy
Antonino S. Aricò
Affiliation:
CNR-ITAE Via Salita Santa Lucia Sopra Contesse 5, Messina I-98125, Italy
Massimo Seregni
Affiliation:
Pirelli Labs, C.2172, Viale Sarca 222, I-20126 Milan, Italy
Laura Gullo
Affiliation:
CNR-ITAE Via Salita Santa Lucia Sopra Contesse 5, Messina I-98125, Italy
Daniela La Rosa
Affiliation:
CNR-ITAE Via Salita Santa Lucia Sopra Contesse 5, Messina I-98125, Italy
Stefania Siracusano
Affiliation:
CNR-ITAE Via Salita Santa Lucia Sopra Contesse 5, Messina I-98125, Italy
Vincenzo Antonucci
Affiliation:
CNR-ITAE Via Salita Santa Lucia Sopra Contesse 5, Messina I-98125, Italy
Ana Tavares
Affiliation:
Pirelli Labs, C.2172, Viale Sarca 222, I-20126 Milan, Italy
Yuri Dubitsky
Affiliation:
Pirelli Labs, C.2172, Viale Sarca 222, I-20126 Milan, Italy
Antonio Zaopo
Affiliation:
Pirelli Labs, C.2172, Viale Sarca 222, I-20126 Milan, Italy
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Abstract

Gd-doped ceria (Ce0.80Gd0.20O1.90) obtained by several nanopowder synthesis processes are compared structurally, morphologically and electrochemically. The powders have been sintered into pellets and investigated by ac-impedance measurements. The electrochemical properties of the electrolytes have been correlated to the structural morphology of the sintered pellets. When the intergrain region exhibits an elevated interdiffusion, the observation of the grain boundaries becomes difficult while the electrochemical properties are improved. Acrylamide polymerization and oxalic co-precipitation techniques showed the best properties.

Type
Research Article
Copyright
Copyright © Materials Research Society 2003

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References

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Synthesis and sintering of Ce1-xGdxO2-x/2 nanopowders via chemical routes.
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Synthesis and sintering of Ce1-xGdxO2-x/2 nanopowders via chemical routes.
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