Flame retardant monosubstituted pentafluorocyclotriphosphazene electrolyte additive and electrolyte including the same and rechargeable lithium battery including the same

摘要

An electrolyte additive and electrolyte and lithium rechargeable battery including the electrolyte additive are provided. The electrolyte additive may be a monosubstituted pentafluorocyclotriphosphazene.

主权项

1. An electrolyte for a rechargeable battery, consisting of:
an electrolyte additive component of Chemical Formula 1:wherein, in Chemical Formula 1,
X1 is a fluorine; X2 is a fluorine; X3 is a fluorine; X4 is a fluorine X5 is a fluorine; Z is —NR1R2; R1 is an unsubstituted C1 to C30 alkyl group; R2 is an unsubstituted C1 to C30 alkyl group; a lithium salt; and an organic solvent component, wherein an amount of the electrolyte additive component is between about 0.01% and 15% by volume based on the total volume of the electrolyte.