Structural analysis, phase stability and electrochemical characterization of Nb doped BaCe0.9Y0.1O3−x electrolyte for IT-SOFCs

Antonino Martorana, Francesco Giannici, Chiara Pugnalini, Alessandra D'Epifanio, Alessandra D'Epifanio, Elisabetta Di Bartolomeo, Silvia Licoccia, Alessandro Longo

Risultato della ricerca: Article

23 Citazioni (Scopus)

Abstract

To improve the chemical stability of high temperature proton conductors based on barium cerate, electrolyte powders doped with different amounts of niobium were synthesized by the citrate–nitrate auto-combustion method. Pure single phases of BaCe0.9−xNbxY0.1O3−x (BCYN, 0.03 ≤ x ≤ 0.12) were obtained by thermal treatment at 1000 °C. Sintering at 1450 °C for 10 h produced dense pellets. X-ray absorption spectroscopy allowed to define the dopant ion insertion site and the co-dopant valency. Treatments in pure CO2 atmosphere at 700 °C for 3 h and subsequent XRD analysis were carried out to probe the chemical stability of the produced electrolytes. The influence of the presence of Nb5+ on conductivity has been investigated by electrochemical impedance spectroscopy (EIS) measurements. Polarization curves were acquired in the 400–750 °C temperature range.
Lingua originaleEnglish
pagine (da-a)201-206
Numero di pagine6
RivistaJournal of Power Sources
Volume199
Stato di pubblicazionePublished - 2012

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering

Fingerprint Entra nei temi di ricerca di 'Structural analysis, phase stability and electrochemical characterization of Nb doped BaCe0.9Y0.1O3−x electrolyte for IT-SOFCs'. Insieme formano una fingerprint unica.

  • Cita questo

    Martorana, A., Giannici, F., Pugnalini, C., D'Epifanio, A., D'Epifanio, A., Di Bartolomeo, E., Licoccia, S., & Longo, A. (2012). Structural analysis, phase stability and electrochemical characterization of Nb doped BaCe0.9Y0.1O3−x electrolyte for IT-SOFCs. Journal of Power Sources, 199, 201-206.