Influence of Microwave-Assisted Pechini Method on La0.80Sr0.20Ga0.83Mg0.17O3-delta Ionic Conductivity. (Articolo in rivista)

Type
Label
  • Influence of Microwave-Assisted Pechini Method on La0.80Sr0.20Ga0.83Mg0.17O3-delta Ionic Conductivity. (Articolo in rivista) (literal)
Anno
  • 2012-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1002/fuce.201100058 (literal)
Alternative label
  • Boldrini S; Mortalo C; Fasolin S; Agresti F; Doubova L; Fabrizio M; Barison S (2012)
    Influence of Microwave-Assisted Pechini Method on La0.80Sr0.20Ga0.83Mg0.17O3-delta Ionic Conductivity.
    in Fuel cells (Weinh., Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Boldrini S; Mortalo C; Fasolin S; Agresti F; Doubova L; Fabrizio M; Barison S (literal)
Pagina inizio
  • 54 (literal)
Pagina fine
  • 60 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 12 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 1 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • CNR-IENI,Corso StatiUniti 4, 35127 Padova, Italy (literal)
Titolo
  • Influence of Microwave-Assisted Pechini Method on La0.80Sr0.20Ga0.83Mg0.17O3-delta Ionic Conductivity. (literal)
Abstract
  • With the aim of investigating the microwave influence on the electrolyte material properties, La0.80Sr0.20Ga0.83Mg0.17O2.815 was prepared by both a conventional and a microwaveassisted sol-gel Pechini method. With respect to the conventional Pechini method (hereafter SGP), the microwave assisted process (hereafter MWA-SGP) guaranteed a faster procedure, reducing the time needed to remove the excess solvents to complete the polyesterification reaction from some days to a few hours. In fact, when a MWA-SGP method was used, powders having higher phase purity were obtained. The sintering process at 1,450 °C of the powders prepared by both methods yielded pellets with similar density values (>=92% of theoretical). Nevertheless, only by microwave-assisted process single-phase products were obtained and no secondary phases such as tetragonal LaSr-GaO4 and LaSrGa3O7 were detected. These by-products have been demonstrated to be detrimental for conductivity. Indeed, pellets obtained by MWA-SGP method showed oxygen ionic conductivity values higher (about 30-40%) than those checked for SGP samples, thus demonstrating the important role of the microwave process on reducing time and costs and on improving the electrolyte properties. (literal)
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