Electrolyte for an electrochemical battery cell

摘要

The electrolyte, containing sulfur dioxide and a conductive salt, is a gel formed in the presence of a fluorsulfinate. It contains a metal halogenide MX. M is a metal of the third group in the periodic system and X is the halogen fluorine, chlorine, bromine or iodine. The formation reaction includes a Lewis base/Lewis acid reaction between the fluorsulfinate and the metal halogenide. The gel is a solvate of the conductive salt with sulfur dioxide. The quantity of sulfur dioxide, related to the quantity of conductive salt in the electrolyte, is preferably at least 0.5 mol of SO 2per mol of conductive salt. An independent claim IS INCLUDED FOR the method of making the cell.