Electrolyte Additive for Lithium Metal Batteries (LMBs) with Single Crystal Cathode

An electrolyte for a battery cell, a battery cell including the electrolyte, and a method of forming an electrolyte. The electrolyte includes a non-aqueous organic solvent including one or more solvents selected from the group consisting of a cyclic carbonate, a linear carbonate, an aliphatic carboxylic ester, a linear chain ester, and a cyclic ether. The electrolyte also includes a lithium salt, wherein the lithium salt is present in the non-aqueous organic solvent in the range of 1 M to 4 M. The electrolyte further includes a borate based additive, wherein the borate based additive, wherein the borate based additive is present in the range of 0.25 percent by weight to 5 percent by weight of the total weight of the electrolyte.