Structure and Physicochemical Properties of Glasses in the Li_2S-LiPO_3 System

摘要

The temperature-concentration dependence of the electrial conductivity of glasses in the Li_2O-LiPO_3 and Li_2S-LiPO_3 systems is investigated With the use of the Tubandt method it is demonstrated that the electric current in glassis of theses systemis is provided by migratin of lithium ions The concentration dependence of te electrical conductivity is interpreted using the obtained data on the IR absorption spectra density microhardeness ultrasoinc velocity etc It is found that the electrical conductivity of glasses in the Li_2S-LiPO_3 system is more than 10~3 times higher than that in pure LiPO_3 .The obseved increase in the electrical conductivity is explained by the formation of sulfur-containing polar strucrtural-chemical groupings of the Li~+[S~-PO_3/2 ] type whose dissociation energy si lower than that of similar oxide polar strucrutal fragement This results in an increase in the number of lithium ions involven in the electicity transport due to an increased in the degree of polar structual-chemical units.