The interdiffusion of CuI in the melt was measured by using various electrochemical methods (chronopotentiometry, cyclic voltammetry, pulse polarography, chronoamperometry). It was found that chronopotentiometry gave systematically lower values for the diffusion coefficient (tables 115 and 116).

M.B.Mbuyi, G.Duyckaerts: Bull. Soc. Chim. Belg., 1977, 86[8], 561-4

 

 

Table 115

Diffusivity of Cu+ in LiCl-42mol%KCl Melts at 450C

 

Method

D (cm2/s)

chronopotentiometry

3.5 x 10-5

cyclic voltammetry

4.1 x 10-5

pulse polarography

4.1 x 10-5

 

 

Table 116

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