APPLICATION OF COLD NEUTRON RADIOGRAPHY TO STUDY THE LITHIUM ION MOVEMENT IN LI1.33TI1.67O4

Cold neutron radiography (CNR) was applied to study the lithium ion mo vement in the spinel-type structured oxide of Li1.33Ti1.67O4. The lith ium ion distribution profiles were obtained from a set of NR images of the electrolyzed oxides having different Li-6/Li-7 ratios. They showe d that the lithium ion transport number of the oxide is 0.91, which al most coincided with the value derived from the EMF measurement of an o xygen gas concentration cell. Furthermore, they showed that the lithiu m ion conduction was almost equally attributed to lithium ions in the tetrahedral A-sites as well as in the octahedral B-sites.