Cyclic voltammetric studies were made of Li2S in the molten electrolyte. It was found that, at temperatures of between 400 and 450C, the diffusion coefficient of S2- was equal to 5.2 x 10-5cm2/s.

D.Warin, Z.Tomczuk, D.R.Vissers: Journal of the Electrochemical Society, 1983, 130[1], 64-70