Organic electrolyte, and secondary battery comprising same

An organic electrolyte comprising at least one cyclic nitrile-based compound represented by Formula 1 below;

• and at least two chain type nitrile-based compounds:
• wherein in Formula 1 above,
• CY1 is a C5-C20 carbocyclic group,
• R1 is selected from hydrogen, deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a nitro group, an amino group, an amidino group, a substituted or unsubstituted C1-C20 alkyl group, a substituted or unsubstituted C2-C20 alkenyl group, a substituted or unsubstituted C2-C20 alkynyl group, a substituted or unsubstituted C1-C20 alkoxy group, and a substituted or unsubstituted C3-C10 cycloalkyl group,
• m is an integer selected from 0 to 39, and when m is 2 or more, 2 or more R1 are the same as or different from each other,
• n is an integer selected from 1 to 40, and when CY1 is a C6 carbocyclic group, n is an integer selected from 3, 4, 5 and 6;
• and
• 6
• ≤
• m
• +
• n
• ≤
• 4
• ⁢
• 0
• .