Gadolinia doped ceria (GDC) is an attractive electrolyte material for intermediate temperature solid oxide fuel cells (IT-SOFCs) for its high ionic conductivity at low temperature (500-700°C). A number of different methods are currently used to prepare nano-sized doped-ceria powder. Among the others, precipitation in solution remains the best method to obtain well-dispersed particles of controlled properties. In this work, nanocrystalline Ce1-xGdxO2-δ (GDC) particles were produced by polyol microwave assisted method in very mild conditions (170°C, 2h, 1 atm). The as-synthesized powder showed good sinterability and ionic conductivity comparable to the ones of the corresponding nanometric commercial GDC.
Titolo: | Microwave-assisted synthesis of gadolinia-doped ceria powders for solid oxide fuel cells |
Autore/i: | GONDOLINI, ANGELA; MERCADELLI, ELISA; A. Sanson; ALBONETTI, STEFANIA; L. Doubova; S. Boldrini |
Autore/i Unibo: | |
Anno: | 2011 |
Rivista: | |
Digital Object Identifier (DOI): | http://dx.doi.org/10.1016/j.ceramint.2011.01.010 |
Abstract: | Gadolinia doped ceria (GDC) is an attractive electrolyte material for intermediate temperature solid oxide fuel cells (IT-SOFCs) for its high ionic conductivity at low temperature (500-700°C). A number of different methods are currently used to prepare nano-sized doped-ceria powder. Among the others, precipitation in solution remains the best method to obtain well-dispersed particles of controlled properties. In this work, nanocrystalline Ce1-xGdxO2-δ (GDC) particles were produced by polyol microwave assisted method in very mild conditions (170°C, 2h, 1 atm). The as-synthesized powder showed good sinterability and ionic conductivity comparable to the ones of the corresponding nanometric commercial GDC. |
Data prodotto definitivo in UGOV: | 2013-06-12 09:26:02 |
Appare nelle tipologie: | 1.01 Articolo in rivista |