Oscillopolarographic methods were used to study the diffusion of Co2+ in the molten eutectic. The diffusivity, at temperatures ranging from 667 to 820K, could be described by:

log [D (cm2/s)] = 2.611 – 1760/T(K)

and the activation energy was equal to 33.6kJ/mol.

Oscillopolarographic Study of the Temperature Dependences of Diffusion Coefficients for a Series of Chlorides in LiCl-KCl. I.I.Naryshkin, V.P.Yurkinskii: Elektrokhimiya, 1969, 5[6], 871-2

 

Table 99

Diffusivity of Cu+ in LiCl-30mol%KCl Melts at 475C

 

Method

D (cm2/s)

chronopotentiometry

3.5 x 10-5

cyclic voltammetry

4.1 x 10-5

pulse polarography

4.2 x 10-5