TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preparation (Claimed): Preparing the pyrrolidinium type sulfonated zwitterion (I) involves refluxing 1-alkylpyrrolidine of formula (i) and propane sulton or butane sulton under nitrogen atmosphere. Preferred Composition: The electrolytic composition further comprises an ionic liquid. Preferred Components: The ionic liquid is at least one of pyrrolidinium, imidazolium, piperidinium, pyridinium, ammonium and morpholinium. The organic solvent is ethylene carbonate, propylene carbonate, dimethyl carbonate, ethyl acetate, acetone, acetonitrile, gamma- butyrolactone, tetrahydrofuran, 1,4-dioxane, 2-methyltetrahydrofuran, dimethylsulfoxide, sulforane, 1-methylpyrrolidone, N,N-dimethylformamide, dimethoxy ethane, diglyme, triglyme and/or tetraglyme. EXAMPLE - 1,3-Propane sulton (12.2 g) was dissolved in acetone 20 D, slowly dropped to 1-methylpyrrolidine (8.5 g) dissolved in acetone 30 D and then refluxed for 12 hours under nitrogen atmosphere. After that, it was cooled to a room temperature, filtered, washed with acetone for several times and then dried with low pressures to obtain 1-methylpyrrolidinium-1-propanesulfonate with 95% yields which was white solids of zwitterions. The 1-methylpyrrolidinium-l-propanesulfonate (2.07 g) was put in methanol 20 D, added with a solution obtained by dissolving lithium hexafluorophosphate (1.52 g) in methanol 10 D and then stirred for 12 hours. After that, the mixture solution was filtered and washed with methanol for several times and then dried to obtain hexafluorophosphate lithium 1-methylpyrrolidinium-l-propanesulfonate with 95% yields which was white solids of zwitterions. The hexafluorophosphate lithium 1-methylpyrrolidinium-l-propanesulfonate was dissolved in a mixture solution having 1:1 of ethylene carbonate (EC) and dimethyl carbonate (DMC) in an amount of 1.5 - 17 wt% and then a conductivity was measured with a Model 150A plus Conductivity Meter. As a result, it was found that it exhibited an improved conductivity of 4.5 mScm since an electron density of sulfonate having negative charges of the zwitterions was biased to pyrrolidinium due to positive charges of pyrrolidinium and thus the sulfonate acted as a strong acid.