Grain size effect on diffusion processes in superionic phases Cu1.75Se, Li0.25 Cu1.75Se, and Li0.25 Cu1.75S.

Autor: M. Balapanov
Předmět:
Zdroj: Russian Journal of Electrochemistry; May2007, Vol. 43 Issue 5, p590-594, 5p
Abstrakt: Abstract  Ionic conduction and chemical diffusion in Cu1.75Se, Li0.25 Cu1.75Se, and Li0.25Cu1.75S at 140–240C are studied. The ionic conduction of Cu1.75 Se is shown to increase with the average grain size. With coarsening of grains, the activation energy for ionic conduction decreases in Cu1.75Se and increases in Li0.25Cu1.75S. The reasons for the diffusion effects observed in the studied materials are discussed. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index