TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Compounds: The lithium salt is selected from lithium hexafluorophosphate, lithium perchlorate, lithium hexafluoroarsenate, lithium tetrafluoroborate, lithium imide salt, lithium bis(perfluoroethylsulfonylimide), lithium trifluoromethane sulfonimide, lithium hexafluroantimonate, lithium trifluoromethane sulfonate, lithium aluminum oxide, lithium tetrachloroaluminate, lithium chloride or lithium iodide. The lithium salt is also represented by formula (II). LiN(CxF2x+1SO2)(CyF2y+1SO2) In formula (II),x, y=natural numbers.The anode in the lithium secondary battery is selected from lixMn1MnyMyA2, LixMn2O4OzXz, lixMn2MnyMyM'zA4, lixCo1CoyMyA2, lixCo1CoyMyO2OzXz, lixNi1NiyMyO2OzXz, lixNi1NiyCoyO2OzXz, lixNi1NizCoyMzAa, lixNi1NizCoyMzO2O, LixNi1NizMnyMzAa, LixNi1NizMnyMzO2O. In the anode,x=0.9-1.1;y=0-0.5;z=0-0.5;a=0-2;M, M'=Mg, Al, Co, K, Na, Ca, Si, Ti, Sn, V, Ge, Ga, B, As, Zr, Mn, Cr, Fe, Sr or rare earth metal;A=O, F, S or P; andX=F, S or P.An active material is coated on the cathode of the lithium secondary battery. The active material is selected from crystalline carbon, amorphous carbon, carbon complex, carbon fiber, lithium metal or lithium alloy.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Compounds: The carbonate based solvent is selected from ethylene carbonate, polypropylene carbonate, 1,2-butylene carbonate, 2,3-butylene carbonate, 1,2-pentylene carbonate, 2,3-pentylene carbonate, dimethyl carbonate, diethyl carbonate, dipropyl carbonate, ethyl methyl carbonate, methylpropyl carbonate or ethylpropyl carbonate. The ester solvent is selected from methyl acetate, ethylacetate, propyl acetate, methyl propionate, ethyl propionate, gamma -butyrolactone, gamma -valerolactone, gamma -carprolactone, delta -valerolactone or eta -carprolactone. The ether-based solvent is selected from tetrahydrofuran, 2-methyltetrahydrofuran or dibutyl ether. The ketone-based solvent is polymethyl vinyl ketone. The aromatic hydrocarbon compound is selected from benzene, fluorobenzene, bromobenzene, chlorobenzene, toluene, xylene, mesitylene, fluoro toluene or trifluorotoluene.