申请人:Kim Sin Yu
公开号:US20060263696A1
公开(公告)日:2006-11-23
Disclosed is a compound represented by the following formula 1:
wherein, each of R
1
˜R
13
independently represents —H, —F, —Cl, —Br, —I, —OH, —SH, —COOH, —PO
3
H
2
, —NH
2
, —NO
2
, —O(CH
2
CH
2
O)
n
H (wherein, n is an integer of 1˜5), C
1
˜C
12
alkyl group, C
1
˜C
12
aminoalkyl group, C
1
˜C
12
hydroxyalkyl group, C
1
˜C
12
haloalkyl group, C
2
˜C
12
alkenyl group, C
1
˜C
12
alkoxy group, C
1
˜C
12
alkylamino group, C
1
˜C
12
dialkylamino group, C
6
˜C
18
aryl group, C
6
˜C
18
aminoaryl group, C
6
˜C
18
hydroxyaryl group, C
6
˜C
18
haloaryl group, C
7
˜C
18
benzyl group, C
7
˜C
18
aminobenzyl group, C
7
˜C
18
hydroxybenzyl group, C
7
˜C
18
halobenzyl group, or nitrile group (—CN); and at least one of R
4
˜R
13
is nitrile group (—CN). A non-aqueous electrolyte comprising: (i) a lithium salt, (ii) a solvent, and (iii) a compound represented by formula 1; and a secondary battery comprising the non-aqueous electrolyte are also disclosed. When the compound represented by formula 1 is added to a non-aqueous electrolyte, it is possible to improve the safety of a secondary battery in an overcharged state.