Nguyen, Dinh Quan Hwang, Junginin Lee, Je Seung Kim, Honggon Lee, Hyunjoo Cheong, Minserk Lee, Bora Kim, Hoon Sik 2024-01-21T01:35:23Z 2024-01-21T01:35:23Z 2021-09-05 2007-01 1388-2481 https://pubs.kist.re.kr/handle/201004/134765 A series of multi-functional zwitterionic compounds having both ester and sulfonate groups were synthesized and their electrochemical properties were investigated. The effect of added zwitterionic compounds on the cycling performance of the cell containing I M LiPF6 in EC, DMC, and EMC (1/1/1 by vol.) was also examined. The cell capacity was not varied much at 115 C up to 50 cycles with the addition of either 2.25 wt% N-methylpyrrolidinium-N-(propyl sulfonate) (MePyS) or N-methylpiperidinium-N-(propyl sulfonate) (MePipS) as an additive, but dropped significantly at higher C rate of I C. Such a sharp decrease of the performance at higher C rate was not observed when MePyS or MePipS was replaced by N-(2-acetoxyethyl) pyrrolidinium-N-(propyl sulfonate) (EsPyS) or N-(2-acetoxyethyl) piperidinium-N-(propyl sulfonate) (EsPipS), implying the positive role of the ester functional group. FT-IR study clearly demonstrates that ester-containing zwitterionic compounds are able to interact with Li+ ions through both sulfonate and ester functional groups. (c) 2006 Elsevier B.V. All rights reserved. English ELSEVIER SCIENCE INC IONIC LIQUIDS MOLTEN-SALTS FUEL-CELLS LI MECHANISMS SOLVENT IMIDE GEL Multi-functional zwitterionic compounds as additives for lithium battery electrolytes Article 10.1016/j.elecom.2006.08.045 1 ELECTROCHEMISTRY COMMUNICATIONS, v.9, no.1, pp.109 - 114 ELECTROCHEMISTRY COMMUNICATIONS 9 1 109 114 scie scopus 000243847600020 2-s2.0-33845210654 Electrochemistry Electrochemistry Article IONIC LIQUIDS MOLTEN-SALTS FUEL-CELLS LI MECHANISMS SOLVENT IMIDE GEL zwitterionic compounds lithium battery ionic liquids cycling performance