TECHNOLOGY FOCUS - ELECTRICAL POWER AND ENERGY - Preferred Component: The electrolyte further comprises a dioxolane co-solvent which is less than 20 wt.% of the electrolyte solvent mixture.The electrolyte further comprises a second co-solvent having a donor number of at least13.The electrolyte is in a liquid, gel, or solid state. It is a catholyte comprising a dissolved lithium polysulfide. The negative electrode is a glassy coated lithium electrode.Preferred Method: A crack in the glassy coated lithium electrode is penetrated by the oxidizing agent additive contained in the electrolyte.The crack is filled with a reaction product between the oxidizing agent additive and the lithium material of the glassy coated lithium electrode.    TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Component: The oxidizing agent additive is sulfur dioxide, nitrous oxide, carbon dioxide, halogen, interhalogen, oxychloride, sulfur monochloride, vinyl carbonate, or halogenated carbonates.The halogen is chlorine, bromine, or iodine.The oxychloride is sulfuryl chloride, or thionyl chloride.The interhalogen is iodine monochloride, iodine trichloride, or iodine monobromide.The electrolyte further comprises an electrolyte salt which is LiN(C2F5SO2)2 (sic), lithium trifluoromethanesulfonimide, lithium triflate, lithium perchlorate, LiPF6 (sic), LiBF4 (sic), or LiAsF6 (sic).The electrochemically active material comprises sulfur in the form of elemental sulfur, metal sulfide, a metal polysulfide, and/or an organosulfur material. The metal can be alkali metals, and/or alkaline earth metals. The electrochemically active material is Li2S8 (sic).Preferred Property: The oxidizing agent additive has a stronger oxidizing ability than elemental sulfur.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Component: The main solvent is a linear polyether. It is from the glyme family (CH3O(CH2CH2O)nCH3) including monoglyme, diglyme, triglyme, or tetraglyme.The main solvent is preferably dimethoxyethane.The second co-solvent is hexamethylphosphoramide, pyridine, N,N-diethylacetamide, N,N-diethylformamide, dimethylsulfoxide, tetramethylurea, N,N-dimethylacetamide, N,N-dimethylformamide, tributylphosphate, trimethylphosphate N,N,N',N'-tetraethylsulfamide, tetramethylenediamine, tetramethylpropylenediamine, or pentamethyldiethylenetriamine.