Issue 6, 2000

Abstract

The divalent Mg2+ ion conducting solid electrolyte was synthesized with a composite form by intentionally changing the starting material mixing ratio to the nonstoichiometric region. By such a preparation technique, spontaneous and microscopic dispersion of the secondary Zr2O(PO4)2 phase was successfully realized and the Mg2+ ion conductivity was considerably enhanced by dispersing the secondary phase, showing the highest conductivity among the Mg2+ ionic conducting solid electrolytes reported. The Mg2+ migration in the composite solid was clearly demonstrated by dc electrolysis and the Mg2+ ion transference number was precisely determined to be unity by a modified Tubandt method. The development of pure Mg2+ ion conducting phosphate based solid electrolytes with high stability and considerably high ionic conductivity contributes greatly to opening a new door for the application of advanced materials such as rechargeable batteries and other specific sensor elements.

Article information

Article type
Paper
Submitted
06 Dec 1999
Accepted
08 Mar 2000
First published
12 Apr 2000

J. Mater. Chem., 2000,10, 1431-1435

Divalent magnesium ion conducting characteristics in phosphate based solid electrolyte composites

N. Imanaka, Y. Okazaki and G. Adachi, J. Mater. Chem., 2000, 10, 1431 DOI: 10.1039/A909599C

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