Oxide ion conducting glasses: Synthetic strategies based on liquid state and solid state routes

Sarah Jacob, John Javornizky, George Wolf, Charles Angell

Research output: Contribution to journalArticle

6 Scopus citations

Abstract

We describe two different approaches to the formation of glasses in which the oxide ion has high mobility and which therefore may act as solid state anionic conductors. The first is a liquid state approach, utilizing the "barely stable compound" principle. The second avoids the liquid state completely by using the direct transformation of crystal to glass by pressure-induced amorphization. Both methods are applied to obtain glasses high in ZrO2 content. The glasses obtained have ionic conductivities that are as high as those of pyrochlores, but fall short of those of stabilized zirconia, but may also have a high electronic conductivity depending on state of oxidation. The decoupling index, Rτ, at the glass transition temperature, which measures the freedom of mobile conducting species to move without coupling to their environment, is high, and is comparable to values for the best fluoride ion-conducting glasses. Prospects for broadening the range of oxide ion conducting glasses are considered.

Original languageEnglish (US)
Pages (from-to)241-251
Number of pages11
JournalInternational Journal of Inorganic Materials
Volume3
Issue number3
DOIs
StatePublished - Jun 26 2001

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Keywords

  • Decoupling
  • Glass
  • High pressure
  • Oxide ion conductor
  • Pressure-induced amorphization

ASJC Scopus subject areas

  • Materials Chemistry

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