Phase diagrams of binary Li2SO4−MeSO4(Me=Be, Mg, Ca, Sr, Ba, Zn, Cd, Mn)
It is shown by means of differential thermal analysis, DTA, that the divalent cations, Be, Mg, Ca, Zn, Cd and Mn are soluble in the solid electrolyte phase fcc Li 2 SO 4 , while there is no detectable solubility in monoclinic Li 2 SO 4 . The upper limit of the solubility of Sr 2+ in the fcc phase is 2 mol% according to DSC, while it is concluded from a conductivity study that about 1 mol% of Ba 2+ is soluble. A previous study of the diffusion of Li + ions in Li 2 SO 4 −MgSO 4 is reinterpreted.