Electrical conductivity and thermal behavior of solid electrolytes based on alkali carbonates and sulfates

S. Brosda, Henricus J.M. Bouwmeester, U. Guth

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Both thermal stability and electrical conductivity of alkali ion conducting Na2CO3 and Na2SO4, were improved by adding alkaline earth carbonates and sulfates, respectively, as well as insulating materials like ¿-Al2O3. The admixing of divalent compounds causes two effects. First a more or less extended solution can exist depending on the radius of the alkaline earth ion and is accompanied by an increase in electrical conductivity. Secondly, a phase mixture with an excess of dopant was observed that shows an enhancement in conductivity and mechanical stability. This phenomenon known as composite effect was observed in the following systems: Na2CO3-BaCO3, Na2CO3-SrCO3, Na2SO4-BaSO4, Na2SO4-¿-Al2O3.
Original languageUndefined
Pages (from-to)1201-1205
JournalSolid state ionics
Issue number2
Publication statusPublished - 1997


  • IR-57202

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