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Enhanced Ionic Conductivity in Composite Electrolytes

Published online by Cambridge University Press:  21 February 2011

Nancy J. Dudney
Nancy J. Dudney*
Affiliation:
Solid State Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831-6030. Operated by Martin Marietta Energy Systems, Inc. for the U.S. Department of Energy under contract DE-AC05-84OR-21400
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Extract

The ionic conductivity of a large number of electrolyte materials, such as LiI, AgCl, AgI and CuCl, is known to be enhanced by the addition of inert submicron particles, most often alumina. Typically the conductivity is enhanced by I to 3 orders of magnitude for composites containing 10 to 40 volume % particles. Several other researchers have attributed this effect to an enhanced carrier concentration in a space charge polarization layer surrounding the alumina particles. However, estimates of the magnitude of such a space charge layer indicate that this mechanism alone can not account for the large enhanced conductivities reported for several of the composites.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 135: Symposium M – Solid State Ionics I , 1988 , 611
Copyright
Copyright © Materials Research Society 1989

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