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

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Brosda, S. and Bouwmeester, H.J.M. and Guth, U. (1997) Electrical conductivity and thermal behavior of solid electrolytes based on alkali carbonates and sulfates. Solid State Ionics, 101-10 (2). pp. 1201-1205. ISSN 0167-2738

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Abstract: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.
Item Type:Article
Copyright:© 1997 Elsevier Science
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Science and Technology (TNW)
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Link to this item:http://purl.utwente.nl/publications/57202
Official URL:http://dx.doi.org/10.1016/S0167-2738(97)00317-2
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