Synthesis and characterization of BaZr0.8y0.2O 3 protonic conductor for Intermediate Temperature Solid Oxide Fuel Cells (IT-SOFCs)

Alessandra D'Epifanio*, Emiliana Fabbri, Elisabetta Di Bartolomeo, Silvia Licoccia, Enrico Traversa

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

4 Scopus citations

Abstract

Barium zirconate BaZr0.8Y0.2O3-δ to be used as protonic conductor under hydrogen containing atmosphere in intermediate temperature (500-700°C) solid oxide fuel cells (IT-SOFCs) was prepared using a sol-gel technique to produce materials with controlled chemical structure and microstructural properties. Several synthetic procedures were investigated, dissolving the metal cations in two solvents (water and ethylene glycol) and using different molar ratios of citric acid with respect to the total metal content. A single phase was obtained at temperature as low as 1100°C. To verify the chemical stability, all the sintered oxides were exposed to CO2 and the phase composition of the resulting specimens was investigated using X-ray diffraction (XRD) and field emission scanning electron microscopy (FE-SEM). Fuel cell polarization curves on symmetric Pt/BZY20/Pt cells of different thickness were measured at intermediate temperatures (500-700°C).

Original languageEnglish (US)
Title of host publicationSolid-State Ionics-2006
Pages31-36
Number of pages6
Volume972
StatePublished - 2007
Externally publishedYes
Event2006 MRS Fall Meeting - Boston, MA, United States
Duration: Nov 27 2006Dec 1 2006

Other

Other2006 MRS Fall Meeting
CountryUnited States
CityBoston, MA
Period11/27/0612/1/06

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials

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