Thermodynamic properties of iron doped beta″-alumina by e.m.f. measurements with beta-alumina electrolytes

Tseung-Yuen Tseng*, R. W. Vest

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

Thermodynamic studies of the non-stoichiometric iron doped beta″-alumina (ID β″) phase were carried out by electrochemical measurements coupled with coulometric titration using the cell Naliq/Li β″-alumina/ID β″. Hot pressing and glass sealing techniques were developed and employed to obtain a suitable and stable Li β″-alumina/ID β″ interface. The equilibrium e.m.f. of the cell was determined as a function of sodium concentration over the temperature range 444 to 523 K. The range of sodium concentrations over which the ID β″ phase is stable was also determined. The relative partial molar thermodynamic quantities of sodium, {Mathematical expression}, {Mathematical expression}, and {Mathematical expression} in ID β″ alumina as a function of sodium concentration were obtained from cell e.m.f. data.

Original languageEnglish
Pages (from-to)2387-2393
Number of pages7
JournalJournal of Materials Science
Volume23
Issue number7
DOIs
StatePublished - 1 Jul 1988

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