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Updated: Jun 22, 2026

From Molecules to Materials: Engineering New Ionic Liquid Crystals Through Halogen Bonding
Published on: March 24, 2018
Synthesis and properties of acyclic ammonium-based ionic liquids with allyl substituents as electrolytes
Taeeun Yim1, Chang Young Choi, Junyoung Mun
1Department of Chemical and Biological Engineering, Research Center for Energy Conversion & Storage, Seoul National University, Seoul, Korea. yte0102@snu.ac.kr
Abstract:
Several new acyclic ammonium-TFSI ionic liquids with an allyl substituent(s) were synthesized and their physicochemical and electrochemical properties were characterized. [AAMM]Am-TFSI (3) with two allyl groups showed the widest electrochemical stability window (5.9 V) among the ammonium-based ILs reported to date because of the increment of both the anodic and cathodic limits. The charge-discharge performance of a LiCoO(2)-based half-cell containing [AAMM]Am-TFSI as an electrolyte was better in cycleability (the capacity retention ratio: 99% after 20 cycles) than that of the cell with the corresponding partially saturated analogue, [AMMP]Am-TFSI (2) (the capacity retention ratio: 92% after 20 cycles).
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