Organic electrolytic solution and lithium battery employing the same
An organic electrolytic solution including: a lithium salt; an organic solvent; and a compound represented by Formula 1 below, and a lithium battery including the organic electrolytic solution. In Formula 1: R1, R2, and R3 may be each independently a hydrogen atom, a C1 to C10 alkyl group, a C6 to C10 cycloalkyl group, a C6 to C10 aryl group, a C2 to C10 alkenyl group, or a C2 to C10 alkynyl group; X is C (R2) or nitrogen; and n is an integer ranging from 1 to 5.
1. An organic electrolytic solution, comprising:
a lithium salt;
an organic solvent; and
a compound represented by Formula 1 below:
wherein R 1 and R 3 are each independently a hydrogen atom, a C1 to C10 alkyl group, a C6 to C10 cycloalkyl group, a C6 to C10 aryl group, a C2 to C10 alkenyl group, or a C2 to C10 alkynyl group; R 2 is a C1 to C10 alkyl group, a C6 to C10 cycloalkyl group, a C6 to C10 aryl group, a C2 to C10 alkenyl group, or a C2 to C10 alkynyl group; X is nitrogen; and n is an integer ranging from 1 to 5.
2. The organic electrolytic solution of claim 1 , wherein the compound represented by Formula 1 is one of the compounds represented by Formulae 4 or 7:
3. The organic electrolytic solution of claim 1 , wherein the amount of the compound represented by Formula 1 is in the range of about 0.1 to about 10 parts by weight, based on 100 parts by weight of the organic solvent.
4. The organic electrolytic solution of claim 1 , wherein the concentration of the lithium salt is in the range of about 0.5 M to about 2 M.
5. The organic electrolytic solution of claim 1 , wherein the organic solvent comprises a high permittivity solvent and a low boiling point solvent.
6. The organic electrolytic solution of claim 5 , wherein the high permittivity solvent comprises at least one of the ethylene carbonate, propylene carbonate, butylene carbonate, and γ-butyrolactone.
7. The organic electrolytic solution of claim 5 , wherein the low boiling point solvent comprises at least one selected of dimethyl carbonate, ethylmethyl carbonate, diethyl carbonate, dipropyl carbonate, dimethoxyethane, diethoxyethane, and a fatty acid ester derivative.
8. A lithium battery comprising:
a cathode;
an anode; and
the organic electrolytic solution of claim 1 .
9. A lithium battery comprising:
a cathode;
an anode; and
the organic electrolytic solution of claim 2 .
10. A lithium battery comprising:
a cathode;
an anode; and
the organic electrolytic solution of claim 3 .
11. A lithium battery comprising:
a cathode;
an anode; and
the organic electrolytic solution of claim 4 .
12. A lithium battery comprising:
a cathode;
an anode; and
the organic electrolytic solution of claim 5 .
13. A lithium battery comprising:
a cathode;
an anode; and
the organic electrolytic solution of claim 6 .
14. A lithium battery comprising:
a cathode;
an anode; and
the organic electrolytic solution of claim 7 .