Analysis of the Ionic Conduction Behavior in Some Room Temperature Molten Fluorides

Abstract

The self-diffusion coefficients of cations and anions increased with increasing the HF-concentration and temperature in (CH 3 ) 3 N·mHF and (CH 3 ) 4 NF·mHF melts. Behavior of the selfdiffusion coefficients of cation and anion in every melt is good agreement with an increase in ionic conductivity and a decrease in viscosity (1). The transference number of (FH) n F -anions estimated from the values of self-diffusion coefficients for each ion in every melt was almost constant and their values were around 0.6 and 0.7 in the (CH 3 ) 3 N·mHF and the (CH 3 ) 4 NF·mHF melts, respectively. Therefore, it is concluded that the diffusion of (FH) n F -anions is faster than that of each cation in these melts.