Proton concentration in 15 mol% Y-doped BaZrO3 proton conductors prepared at various temperatures

Fumitada Iguchi, Yuki Nagao, Noriko Sata, Hiroo Yugami

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Proton concentration as a function of ambient temperature in 15 mol% Y-doped BaZrO3 proton conductors prepared at 1800 °C, 1600 °C and 1400 °C, is measured by thermo-gravimetric (TG) analysis. TG analysis reveals that the maximum proton concentration in the specimen prepared at 1400 °C is over 15 mol%. The value is over the limitation decided by hydration process via oxygen vacancy. Infrared diffuse reflection spectroscopy confirms that additional O-D stretching vibration exists in the specimen. Both results strongly suggest that not a few amounts of water incorporate in the specimen prepared at low temperature through other hydration process.

Original languageEnglish
Pages (from-to)97-100
Number of pages4
JournalSolid State Ionics
Volume192
Issue number1
DOIs
Publication statusPublished - 2011 Jun 16

Keywords

  • BaZrO
  • Infrared diffuse reflectance spectroscopy
  • Proton concentration
  • Proton conductors
  • Thermo-gravimetric (TG) analysis

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

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