申请人:Kawada Atsushi
公开号:US20100121074A1
公开(公告)日:2010-05-13
Disclosed is an ionic liquid which is stable over a wide potential range and exhibits a high ionic conductivity. The ionic liquid comprises a cyclic guanidine salt represented by the following formula (1):
wherein R
1
and R
2
each is independently an alkyl group or an alkoxyalkyl group, X is a methylene group, an oxygen atom, a sulfur atom, or R
3
N; R
3
is an alkyl group, an alkoxyalkyl group, or an acyl group; l, m, and n each is an integer in the range of 1-6; Y
−
is a monovalent anion such as (R
4
SO
2
)
2
N
−
, R
4
SO
3
−
, R
4
COO
−
, BF
4
−
, PF
6
−
, NO
3
−
, (CN)
2
N
−
, (CHO)
2
N
−
, NCS
−
, R
4
OSO
3
−
, R
4
SO
2
S
−
, and a halogen ion. The ionic liquid is useful for a variety of electrolytes, particularly for electrolytes of electrochemical cells.
本发明揭示了一种离子液体,该离子液体在广泛的电位范围内稳定,并表现出较高的离子电导率。该离子液体包括由以下式(1)表示的环状胍盐:其中R1和R2各自独立地是烷基或烷氧基烷基,X是亚甲基,氧原子,硫原子或R3N; R3是烷基,烷氧基烷基或酰基; l,m和n每个在1-6的范围内是整数; Y−是一价阴离子,例如(R4SO2)2N−,R4SO3−,R4COO−,BF4−,PF6−,NO3−,(CN)2N−,(CHO)2N−,NCS−,R4OSO3−,R4SO2S−和卤离子。该离子液体对于各种电解质特别是电化学电池的电解质非常有用。