固体電解質としての鉱物

鉱物のイオン導電機構と測定

抄録

The ionic conduction is one of the interesting physical properties which have been studied for minerals. In this paper, we present a basic classification of solid electrolytes based on the conduction mechanisms. An overview of the complex impedance method, the Tubandt method and isotope tracer method are also presented in relation to the ionic conductivity measurements of the solid electrolyte minerals such as proustite Ag₃AsS₃, cerargyrite AgCI and iodilite AgI. The studies on the structure and dynamics of ions in superionic conducting phase are reviewed mainly by diffraction method. We describe the behaviours of solid electrolytes such as the activation energies for conduction, the transport number of mobile species, enhanced ionic conduction in multiphase systems and the thermal behaviour and diffusion path of the mobile ions.