ELECTROLYTE FOR SECONDARY BATTERY AND SECONDARY BATTERY INCLUDING THE SAME

摘要

An electrolyte for a secondary battery includes a non-aqueous solvent; a lithium salt; and a heterocyclic compound represented by Formula 1:;;wherein, in Formula 1, R1 and R2 are each independently selected from hydrogen, a halogen group, a cyano group, a hydroxy group, a nitro group, —C(═O)Ra, —C(═O)ORa, —OCO(ORa), —C═N(Ra), a substituted or unsubstituted C1-C20 alkyl group, and a combination thereof, wherein Ra is selected from hydrogen and a C1-C10 alkyl group, and, provided that at least one selected from R1 and R2 is selected from a halogen group, a cyano group, a hydroxy group, a nitro group, —C(═O)Ra, —C(═O)ORa, a substituted or unsubstituted C1-C20 alkyl group, and a combination thereof.

主权项

1. An electrolyte for a secondary battery comprising:
a non-aqueous solvent; a lithium salt; and a heterocyclic compound represented by Formula 1: wherein, in Formula 1, R1 and R2 are each independently selected from hydrogen, a halogen group, a cyano group, a hydroxy group, a nitro group, —C(═O)Ra, —C(═O)ORa, —OCO(ORa), —C═N(Ra), a substituted or unsubstituted C1-C20 alkyl group, and a combination thereof, wherein Ra is selected from hydrogen and a C1-C10 alkyl group, and R3, R4, R5, and R6 are each independently selected from hydrogen, a halogen group, a cyano group, a hydroxy group, —C(═O)Rb, —C(═O)ORb, —OCO(ORb), —C═N(Rb), —SRb, —S(═O)Rb, —S(═O)2Rb, —P(Rb)2, a substituted or unsubstituted C1-C20 alkyl group, a substituted or unsubstituted C1-C20 alkoxy group, a substituted or unsubstituted C2-C20 alkenyl group, a substituted or unsubstituted C2-C20 alkynyl group, a C2-C20 alkylene oxide group, a substituted or unsubstituted C3-C30 cycloalkyl group, a substituted or unsubstituted C6-C30 aryl group, a substituted or unsubstituted C6-C30 aryloxy group, a substituted or unsubstituted C6-C30 heteroaryl group, and a combination thereof, wherein Rb is selected from hydrogen, a C1-C10 alkyl group, and a C6-C20 aryl group, provided that at least one selected from R1 and R2 is selected from a halogen group, a cyano group, a hydroxy group, a nitro group, —C(═O)Ra, —C(═O)ORa, a substituted or unsubstituted C1-C20 alkyl group, and a combination thereof.