The relationship between hydrogen pressure and the Warburg coefficient derived from AC impedance measurement at an Mo electrode indicated that hydrogen gas dissolved chemically in molten LiCl-KCl. The solubility coefficient of hydrogen in molten LiCl-KCl at 673K was estimated to be 6.1 x 10-6molH/cm3atm1/2 from the amount of dissolved hydrogen deduced using tensimetry. The diffusion coefficient of dissolved hydrogen in the melt was 2.6 x 10-5cm2/s from the Warburg coefficient and the solubility coefficient.

Dissolution of Hydrogen in Molten LiCl-KCl. H.Nakajima, T.Nohira, Y.Ito: Electrochemistry, 2005, 73[8], 733-5