Method for making magnesium salt electrolyte and electrolyte

Abstract

An electrolyte and a method of making an electrolyte of the formula: Mg[Al(R)4]2, where R represents a compound selected from a deprotonated alcohol or thiol; an amine; or a mixture thereof. The method includes the steps of: combining a Mg(AlH4)2 precursor with an alcohol, thiol or amine of the general formula R—H to create a reaction liquor containing Mg[Al(R)4]2; and washing the reaction liquor in an organic solvent.

1 . A method of making an electrolyte,
 the method comprising:   combining a Mg(AlH 4 ) 2  precursor with a deprotonated alcohol or thiol; or amine;   or a mixture thereof to create a reaction liquor containing Mg[Al(R) 4 ] 2 , wherein R represents the deprotonated alcohol or thiol; or amine; or the mixture thereof;   washing the reaction liquor in an organic solvent selected from the group consisting of dry DME, 2-methyl-THF, diglyme, triglyme, and tetraglyme to obtain a salt; and   combining the salt with an Mg(PF 6 ) 2  additive.   
     
     
         2 . The method in accordance with  claim 1 , further comprising filtering the washed reaction liquor under an inert atmosphere. 
     
     
         3 . (canceled) 
     
     
         4 . The method in accordance with  claim 1 , wherein at least one of the deprotonated alcohol or thiol; or amine; or a mixture thereof is aromatic. 
     
     
         5 . The method in accordance with  claim 1 , wherein at least one of the deprotonated alcohol or thiol; or amine; or a mixture thereof is fluorinated. 
     
     
         6 . The method in accordance with  claim 1 , wherein the organic moiety of at least one of the deprotonated alcohol or thiol; or
 amine; or a mixture thereof comprises tert-butyl, perfluoro-tert-butyl, hexafluoro-iso-propyl, phenyl, or pentafluorophenyl.   
     
     
         7 . (canceled) 
     
     
         8 . An electrolyte made by a method comprising:
 combining a Mg(AlH 4 ) 2  precursor with a deprotonated alcohol or thiol; or amine; or a mixture thereof to create a reaction liquor containing Mg[Al(R) 4 ] 2 , wherein R represents the deprotonated alcohol or thiol; or amine; or the mixture thereof;   washing the reaction liquor in an organic solvent selected from the group consisting of dry DME, 2-methyl-THF, diglyme, triglyme, and tetraglyme to obtain a salt; and   combining the salt with an Mg(PF 6 ) 2  additive.   
     
     
         9 . (canceled) 
     
     
         10 . A cell or battery comprising the electrolyte in accordance with  claim 8 . 
     
     
         11 . The cell or battery according to  claim 10 , wherein the cell or battery is a magnesium cell or battery or a magnesium-ion cell or battery.