STUDIES ON THE LITHIUM ION CONDUCTION IN CA0.95LI0.10WO4 USING COLD NEUTRON RADIOGRAPHY

Cold neutron radiography (CNR) was applied to study the lithium ion co nduction in the substituted scheelite-type oxide of Ca0.95Li0.10WO4. T he lithium ion distribution profiles were obtained from a set of neutr on radiography (NR) images of the electrolyzed oxides having different Li-6/Li-7 ratios. They showed that the lithium ion transport number o f the oxide is 0.99, which coincided with the value derived from the E MF measurement of an oxygen gas concentration cell. Furthermore, they denoted that the lithium ion conduction was preferably ascribed to lit hium ions in the interstitial sites.