NON-AQUEOUS ELECTROLYTE FOR RECHARGEABLE MAGNESIUM ION CELL

摘要

An electrolyte for use in electrochemical cells is provided. One type of non-aqueous Magnesium electrolyte comprises: at least one organic solvent; at least one electrolytically active, soluble, inorganic Magnesium salt complex represented by the formula: MgnZX3+(2*n), in which Z is selected from a group consisting of aluminum, boron, phosphorus, titanium, iron, and antimony; X is a halogen and n=1-5. The properties of the electrolyte include high conductivity, high Coulombic efficiency, and an electrochemical window that can exceed 3.5 V vs. Mg/Mg+2 and total water content of <200 ppm. The use of this electrolyte promotes the electrochemical deposition and dissolution of Mg from the negative electrode without the use of any additive. Other Mg-containing electrolyte systems that are expected to be suitable for use in secondary batteries are also described. Rechargeable, high energy density Magnesium cells containing a cathode, an Mg metal anode, and an electrolyte are also disclosed.

主权项

1. A rechargeable magnesium battery having an additive free non-aqueous electrolyte solution, comprising:
an anode electrode, a cathode electrode, and said non-aqueous electrolyte solution in contact with the anode electrode and the cathode electrode, said non-aqueous electrolyte solution comprising:
at least one organic solvent;at least one electrolytically active, soluble, Magnesium (Mg) salt; andwater in less than a trace amount.