| abstract |
A salt of the general formula: Ca(L) x (PF 6 ) 2 wherein each L is a ligand selected from an ether or aza macrocyclic; a halomethane or a nitrile of the general formula R-C≡N. The method of making the salt comprises the steps: providing Ca metal, activating the Ca metal in a first dry solution comprising a first ligand solution (L 1 ), treating the dry solution of activated Ca metal and L 1 with NOPF 6 in a second dry solution comprising a second ligand solution (L 2 ), heating the treated Ca metal solution removing residual solvent under vacuum, and recrystallizing the remaining solid to form the salt wherein L comprises a mixture of L 1 and L 2 . The salt can be used as the salt in an electrolyte, or as an additive to an electrolyte, and the resulting electrolyte can be used in a calcium-ion cell or battery. |