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Direct evidence for purely silver ion conduction in Cul-doped silver oxysalt superionic systems: Combined electrolysis and EDS studies
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Ceramics.
2007 (English)In: Electrochimica Acta, ISSN 0013-4686, E-ISSN 0019-4686, Vol. 52, no 28, 8064-8068 p.Article in journal (Refereed) Published
Abstract [en]

Maiden attempt has been made for the direct estimation of the contributions of silver and copper ions to the ionic conductivity in superionic solids obtained in CuI-doped silver oxysalt systems. The application of the combined electrolysis and EDS techniques towards qualitative and quantitative analyses of the mobile ionic species in solid electrolyte systems having more than one possible mobile ion is reported. These studies confirmed that these electrolyte materials are purely Ag+ conducting up to 50 mol% CuI in xCuI-(100-x)[2Ag(2)O-0.7V(2)O(5)-0.3B(2)O(3)] and xCuI-(100 - x)[Ag2O-0.7MoO(3)-0.3WO(3)] systems and small fraction of t(Cu+) exists above 60 mol% CuI. These solid electrolyte materials exhibited a high ionic transport numbers (t(i)) of >0.985 and the t(i) increases when two glass formers are used.

Place, publisher, year, edition, pages
2007. Vol. 52, no 28, 8064-8068 p.
Keyword [en]
superionic, EDS, solid electrolytes, ionic transport number, silver ion, conducting, electrical-conductivity, transport, glasses, composites
URN: urn:nbn:se:kth:diva-17037DOI: 10.1016/j.electacta.2007.06.080ISI: 000250169800033ScopusID: 2-s2.0-34548133289OAI: diva2:335080
QC 20100525Available from: 2010-08-05 Created: 2010-08-05Bibliographically approved

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