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Received November 28, 2005
Accepted March 7, 2006
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Thermal and electrochemical properties of ionic liquids based on N-methyl-N-alkyl morpholinium cations
Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology, 373-1 Guseong-dong, Yuseong-gu, Daejeon 305-701, Korea 1LG Chemical, Ltd., PO Box 61, Daejeon 305-380, Korea
h_lee@kaist.ac.kr
Korean Journal of Chemical Engineering, September 2006, 23(5), 795-799(5), 10.1007/BF02705930
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Abstract
A series of ionic liquids based on morpholinium cations were prepared. N-alkyl-N-methylmorpholinium bromide, N-alkyl-N-methylmorpholinium tetrafluoroborate, N-alkyl-N-methylmorpholinium hexafluorophosphate and N-alkyl-N-methylmorpholinium bis(trifluoromethanesulfonyl)imide were synthesized, and then thermal and electrochemical properties of prepared ionic liquids were measured. These morpholinium salts were found to be thermally stable near 673 K and electrochemically stable up to 6 V at room temperature. In conclusion, these new series of morpholinium based ILs might be potential candidates for electrolytes in batteries and other electrolytic devices.
Keywords
Ionic Liquids Electrochemical Property N-alkyl-N-methylmorpholinium Bromide ([Mor][Br]) N-alkyl-Nmethylmorpholinium Tetrafluoroborate ([Mor][BF4]) N-alkyl-N-methylmorpholinium Hexafluorophosphate ([Mor][PF6]) and N-alkyl-N-methylmorpholinium Bis(trifluoromethanesulfonyl)imide ([Mor][TFSI]) Lithium Doped Electrolyte
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de Souza RF, Padilha JC, Goncalves RS, Dupont J, Electrochem. Commun., 5, 728 (2003)
Ding MS, Xu K, Jow TR, J. Electrochem. Soc., 147(5), 1688 (2000)
Forsyth CM, MacFarlane DR, Golding JJ, Huang J, Sun J, Forsyth M, Chem. Mater., 14, 2103 (2002)
Hagiwara R, Ito Y, J. Fluor. Chem., 105, 221 (2000)
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Huddleston JG, Willauer HD, Swatloski RP, Visser AE, Rogers RD, Chem. Commun., 1765 (1998)
Kim KS, Choi S, Demberelnyamba D, Lee H, Oh J, Lee BB, Mun SJ, Chem. Commun., 828 (2004)
Kim KS, Shin BK, Lee H, Korean J. Chem. Eng., 21(5), 1010 (2004)
MacFarlane DR, Meakin P, Sun J, Amini N, Forsyth M, J. Phys. Chem. B, 103(20), 4164 (1999)
Marsh KN, Deev A, Wu ACT, Tran E, Klamt A, Korean J. Chem. Eng., 19(3), 357 (2002)
McEwen AB, Ngo HL, LeCompte K, Goldman JL, J. Electrochem. Soc., 146(5), 1687 (1999)
Ngo HL, Lecompte K, Hargens L, McEwen AB, Thermochim. Acta, 97, 357 (2000)
Ohno H, Yoshizawa M, Solid State Ion., 154, 303 (2002)
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Sato T, Masuda G, Takagi K, Electrochim. Acta, 49(21), 3603 (2004)
Sun J, Forsyth M, MacFarlane DR, J. Phys. Chem. B, 102, 8858 (1988)
