Patent ID: 7943257

Claim:
An electrolyte comprising: a solvent comprising a low-inflammability solvent with a heat of combustion of 19,000 kJ/kg or less, the low-inflammability solvent selected from the group consisting of an anhydrous halide represented by one selected from the group consisting of Formulas 3 to 5 and 7, a phosphonate halide represented by Formula 9 or 10, a butane substituted with two chlorides and five fluorides, and a combination thereof: where X 1 and X 2 of Formula 3 are independently selected from the group consisting of H, F, and Cl, and at least one of X 1 and X 2 of Formula 3 is selected from the group consisting of F and Cl, where X 1 to X 4 of Formula 4 are independently selected from the group consisting of H, F, and Cl; and at least one of X 1 to X 4 of Formula 4 is selected from the group consisting of F and Cl, where X 1 and X 2 of Formula 5 are independently selected from the group consisting of H, F, and Cl, and at least one of X 1 and X 2 Formula 5 is selected from the group consisting of F or Cl, where X 1 to X 6 of Formula 7 are independently selected from the group consisting of H, F, and Cl; and at least one of X 1 to X 6 of Formula 7 is selected from the group consisting of F and Cl; where X 1 to X 4 of Formula 9 are independently selected from the group consisting of H, F, and Cl; and at least one of X 1 to X 4 of Formula 9 selected from the group consisting of F and Cl; and where X 1 to X 2 of Formula 10 are independently selected from the group consisting of H, F, and Cl; and at least one of X 1 and X 2 of Formula 10 is selected from the group consisting of F and Cl; and a lithium salt.