MANUFACTURING METHOD OF QUATERNARY AMMONIUM SALT AND ELECTRIC DOUBLE LAYER CAPACITOR USING THE QUATERNARY AMMONIUM SALT MANUFACTURED BY THE METHOD

摘要

The present invention relates to a method of preparing a quaternary ammonium salt and an electrical double layer capacitor using the quaternary ammonium salt prepared by the same, the method comprising the steps of: adding 1-methyl pyrrolidine and methyl iodide to a first solvent and conduct reaction thereof; generating 1,1-dimethylpyrrolidinium iodide by the reaction; distilling the resultant products under reduced pressure and then adding a second solvent to the same to precipitate 1,1-dimethylpyrrolidinium iodide; selectively separating the precipitated 1,1-dimethylpyrrolidinium iodide; adding the selectively separated 1,1-dimethylpyrrolidinium iodide and tetrafluoroboric acid to a third solvent and conduct reaction thereof; distilling the resultant products under reduced pressure to obtain reduced pressure concentrate; adding a fourth solvent to the reduced pressure concentrate and then stirring the mixture to precipitate P11BF4; and selectively separating the precipitated P11BF4.