FUNCTIONALIZED CHOLINE CHLORIDE IONIC LIQUID, PREPARATION METHOD THEREOF AND USE IN ELECTROCHEMICAL ENERGY STORAGE DEVICE
申请人:ZHANG Lingzhi
公开号:US20150303511A1
公开(公告)日:2015-10-22
The present invention discloses a process for preparing a functionalized choline chloride ionic liquid as defined in formula (I), and thereof use in an electrochemical energy storage device, as an electrolyte solution or an additive for a lithium ion battery and a supercapacitor. The ionic liquid electrolyte material has better biocompatibility, flame retardance, high ionic conductivity, low viscosity, and wide electrochemical window.
wherein R
1
is selected from the group consisting of: (CH
2
═CH—(CH
2
)
n
)—, CN(CH
2
)
n
—, or R
2
3
Si—; R
2
is selected from CH
3
—(CH
2
)
m
—, n is an integer selected from 1 to 3, m is an integer selected from 0 to 2; or one of R
2
is (CH
3
)
3
Si—O—. Anion A in Formula I is selected from the group consisting of: Cl
−
, Br
−
, I
−
, BF
4
−
, NO
3
−
, SO
4
2−
, CF
3
COO
−
, CF
3
SO
3
−
, (CF
3
SO
2
)
2
N
−
, PF
6
−
, BF
2
C
2
O
4
−
, or B(C
2
O
4
)
2
−
.
本发明公开了一种制备功能化
氯化胆碱离子液体的方法,其定义如公式(I)所示,并且在电
化学储能器件中使用,作为电解质溶液或
锂离子电池和超级电容器的添加剂。该
离子液体电解质材料具有更好的
生物相容性、阻燃性、高离子导电性、低粘度和广泛的电
化学窗口。其中,R1选择自(
CH2═CH—( )n)—、CN( )n—或R23Si—组成的群;R2选择自
CH3—( )m—,n为1至3之间的整数,m为0至2之间的整数;或R2之一为( )3Si—O—。公式I中的阴离子A选择自Cl−、Br−、I−、
BF4−、
NO3−、SO42−、CF3COO−、CF3SO3−、(CF3SO2)2N−、PF6−、BF2 −或B(
C2O4)2−组成的群。