TY  - JOUR
AU  - Schmitz, Paulo
AU  - Kolek, Martin
AU  - Pyschik, Marcelina
AU  - Jalkanen, Kirsi
AU  - Nowak, Sascha
AU  - Winter, Martin
AU  - Bieker, Peter
TI  - Modified Imidazolium-Based Ionic Liquids With Improved Chemical Stability Against Lithium Metal
JO  - ChemistrySelect
VL  - 2
IS  - 21
SN  - 2365-6549
CY  - Weinheim
PB  - Wiley-VCH
M1  - FZJ-2018-04826
SP  - 6052 - 6056
PY  - 2017
AB  - Chemical instability against metallic lithium of imidazolium cation‐based ionic liquids (ILs) such as 1‐butyl‐3‐methylimidazolium bis(trifluoromethanesulfonyl)imide ([C4MIm]TFSI) has been reported in literature previously. In this work, modified imidazolium cation‐based ionic liquids are shown, in which the acidic proton at the C‐2 position of the imidazolium ring is replaced by methyl groups. 1‐butyl‐2,3‐dimethylimidazolium bis(trifluoromethanesulfonyl)imide ([C4MMIm]TFSI) and 1‐butyl‐2,3,4,5‐tetramethylimidazolium bis(trifluoromethanesulfonyl)imide ([C44MIm]TFSI) are found to prevent the formation of N‐heterocyclic carbenes and thus improve the electrochemical performance of electrolytes including these ILs. Furthermore, possible decomposition products of the modified imidazolium cations are characterized.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000406682000038
DO  - DOI:10.1002/slct.201701599
UR  - https://juser.fz-juelich.de/record/851124
ER  -