Conductivity studies of sol-gel prepared BaCe0.85-xZr xY0.15O3-´ solid electrolytes using impedance spectroscopy (Articolo in rivista)

Type
Label
  • Conductivity studies of sol-gel prepared BaCe0.85-xZr xY0.15O3-´ solid electrolytes using impedance spectroscopy (Articolo in rivista) (literal)
Anno
  • 2009-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1007/s10800-009-9932-0 (literal)
Alternative label
  • L. Doubova; S. Barison; S. Boldrini; M. Fabrizio; C. Mortalò; C. Pagura (2009)
    Conductivity studies of sol-gel prepared BaCe0.85-xZr xY0.15O3-´ solid electrolytes using impedance spectroscopy
    in Journal of Applied Electrochemistry
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • L. Doubova; S. Barison; S. Boldrini; M. Fabrizio; C. Mortalò; C. Pagura (literal)
Pagina inizio
  • 2129 (literal)
Pagina fine
  • 2141 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://www.springerlink.com/content/bk8258w05u681060/ (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 39 (literal)
Rivista
Note
  • Scopu (literal)
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Istituto per l’Energetica e le Interfasi (IENI), Consiglio Nazionale delle Ricerche (CNR), Corso Stati Uniti 4, 35127 Padova, Italy (literal)
Titolo
  • Conductivity studies of sol-gel prepared BaCe0.85-xZr xY0.15O3-´ solid electrolytes using impedance spectroscopy (literal)
Abstract
  • A systematic investigation on doped barium cerate perovskites on conductivity was performed by means of ac electrochemical impedance spectroscopy technique. BaCe0.85-xZrxY0.15O3-d powders (x=0, 0.1, 0.2, 0.3, 0.4) were prepared by a modified sol-gel Pechini method and sintered at 1250°C -1450°C, depending of Zr content, to obtain good densities (93-97 % of the theoretical ones). The measured total conductivities for these solid solutions in three different atmospheres were reported: in dry oxygen, in dry nitrogen and wet (0.5 bar H2O) hydrogen (5%H2/Ar) atmospheres. Arrhenius plots recorded in dry oxygen as well as in dry nitrogen showed some residual hydration which remained in the specimens upon initial heating. The compositions with x=0.3 and 0.4 gave conductivities close to 10-2 S/cm in 5%H2/Ar /H2O atmosphere at 600°C. The isothermal conductivities values showed a little variation for x from 0.2 to 0.4 between 500 and 800°C. (literal)
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