NOVELTY - A lithium sulfur battery comprises: an anode including an anode collector (1) and an anode active material (2) selected from metallic lithium, lithium alloy and lithium-carbon system; cathode including cathode collector (7) and cathode active material (6) in the form of a sulfur-containing nanostructure; electrolyte including lithium salt electrolyte and organic solvent; and separator (4) disposed between cathode and anode for separating electrolyte into cathode electrolyte (5) and anode electrolyte (3) and for allowing lithium ions to pass through.    USE - As a lithium sulfur battery (claimed), useful for electronic devices and vehicles.    ADVANTAGE - This battery exhibits enhanced ionic conductivity. The cathode active material prevents dissolution of intermediate polysulfides from the cathode and thus enhances the battery life and power density. The cathode electrolyte comprises N-methyl-N-butyl-piperidinium that suppresses the dissolution of intermediate polysulfides from the cathode during discharge, thus prevents the battery from capacity decrease and active weight loss during repeated charge-discharge. The use of organic solvent, preferably polymer gel avoids leakage of the electrolyte from the battery, and thus prevents environment pollution.    DETAILED DESCRIPTION - A lithium sulfur battery comprises: an anode including an anode collector (1) and an anode active material (2) selected from metallic lithium, lithium alloy and lithium-carbon system; cathode including a cathode collector (7) and a cathode active material (6) in the form of a sulfur-containing nanostructure including at least one of sulfur, organosulfur compound, an organosulfur polymer, carbon-sulfur composite, a sulfur-polymer composite and an organic sulfide; an electrolyte including a lithium salt electrolyte and an organic solvent; and separator (4) disposed between the cathode and the anode for separating the electrolyte into a cathode electrolyte (5) and an anode electrolyte (3) and for allowing lithium ions to pass through.    DESCRIPTION OF DRAWING(S) - The figure shows view of battery.    Anode collector (1)    Anode active material (2)    Anode electrolyte (3)    Separator (4)    Cathode electrolyte (5)    Cathode active material (6)    Cathode collector (7)