Ionic Conductivities in Solid Solutions of K5+xSb5-xTixP2O20 and K5-xSb5-xMxP2O20 (M = MoVI, WVI)

B. Wang, M. Greenblatt

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3 Scopus citations

Abstract

Solid solutions of K5+xSb5-xTixP2O20 (0 ≤ x ≤ 0.2) and K5-xSb5-xMxP2O20 (M = MoVI and WVI, 0 ≤ x ≤ 0.15) were prepared by solid-state reaction. Ionic conductivity was investigated from 200 to 500 °C by ac complex impedance measurement. The ionic conductivity of the Ti-substituted phase increases with increasing x to the limit of substitution (x = 0.2). This increase of conductivity is attributed to a larger bottleneck and an increase in the K+ concentration due to the Ti substitution. In the Mo/W-substituted phases, the conductivity increases with increasing x to the limit of substitution (x = 0.15) due to an increasing K+ vacancy concentration.

Original languageEnglish (US)
Pages (from-to)657-661
Number of pages5
JournalChemistry of Materials
Volume4
Issue number3
DOIs
StatePublished - Feb 1 1992

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)
  • Materials Chemistry

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