Korean Journal of Chemical Engineering, Vol.23, No.5, 795-799, September, 2006
Thermal and electrochemical properties of ionic liquids based on N-methyl-N-alkyl morpholinium cations
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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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