| abstract |
Described is a salt of the general formula: Mg 2+ (L x ) 6 (PF 6 ) 2 wherein each L is a ligand selected from dichloromethane, a cyclic ether, or a nitrile of the general formula R—C≡N. The method of making the salt comprises the steps: providing Mg metal, activating the Mg metal in a first dry solution comprising a first ligand solution (L 1 ), treating the dry solution of activated Mg metal and L 1 with NOPF 6 in a second dry solution comprising a second ligand solution (L 2 ), heating the treated Mg metal solution removing residual solvent under vacuum, and recrystallizing the remaining solid to form the salt wherein L x 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, in a cell or battery. |