Patent ID: 8691434

Claim:
A magnesium ion containing non-aqueous electrolyte comprising magnesium and aluminum ions dissolved in an organic etheric solvent, the stoichiometric ratio of the aluminum ions and the magnesium falling within a range of 1.0 to 2.0, the electrolyte formed by: adding metal magnesium, a halogenated hydrocarbon RX, an aluminum halide AlY 3 , and a quaternary ammonium salt R 1 R 2 R 3 R 4 N + Z to the organic etheric solvent to form a mixture, wherein R is an alkyl group or an aryl group, X is chlorine, bromine, or iodine, Y is chlorine, bromine, or iodine, and wherein R 1 , R 2 , R 3 , and R 4 represent each an alkyl group or an aryl group, and Z − represents a chloride ion (Cl − ), a bromide ion (B − ), an iodide ion (I − ), an acetate ion (CH 3 COO − ), a perchlorate ion (ClO 4 − ), a tetrafluoro borate ion (BF 4 − ), a hexafluoro phosphate ion (PF 6 − ), a hexafluoro arsenate ion (AsF 6 − ), a perfluoroalkyl sulfonate ion (Rf1SO 3 − ) (Rf1 is perfluoroalkyl group), or a perfluoroalkyl sulfonylimide ion ((Rf2SO 2 ) 2 N − )(Rf2 is a perfluoroalkyl group); and applying a heating treatment while stirring the mixture, wherein the electrolyte has a higher oxidation potential than a Grignard reagent formed by a reaction between the metal magnesium and the halogenated hydrocarbon RX.