Diffusion Coefficient Measurements in Lithium Ion Conductive Oxides by means of Neutron Radiography

Neutron radiography (NR) technique has been applied to the diffusion coefficien measurements of lithium ions in ion conductive solids using 7Li/6 Listable isotopes as tracer. In this article, we present the procedure of diffusion coefficient measurement by means of NR method, and reviewed the results of three types of lithium ion conductors, i.e. Li4/3Ti5/3O4, LISICON solid solutions, and perovskite-type lithium ion conductors, including analyses of diffusion mechanisms.