NOVELTY - A lithium-sulfur battery comprises: (1) positive electrode comprising an active sulfur positive active material and pores; (2) negative electrode comprising a negative active material that is lithium metal, lithium-containing alloy, materials which reversibly intercalate/deintercalate lithium ions or materials which reversibly form a chemical compound with lithium; (3) separator; and (4) ion-conductive electrolyte.    USE - As lithium-sulfur battery.    ADVANTAGE - The lithium-sulfur battery has improved cycle life characteristics and capacity by reducing the pore size and hence increasing the active sites. A positive electrode with active sulfur for continuous electrochemical redox reaction and which exhibits electronic and ionic conductivity is obtained.    DETAILED DESCRIPTION - A lithium-sulfur battery comprises:    (1) a positive electrode (3) comprising:    (a) a positive active material containing active sulfur;    (b) pores of average size up to 20 microm with electron- and ion-conductive properties and with the active sulfur disposed in the pores during a lithium-sulfur battery reaction;    (2) a negative electrode (4) comprising a negative active material that is lithium metal, lithium-containing alloy, materials which reversibly intercalate/deintercalate lithium ions or materials which reversibly form a chemical compound with lithium;    (3) a separator (2) interposed between positive and negative electrodes; and    (4) an ion-conducive electrolyte.    INDEPENDENT CLAIMS are included for:    (1) preparation of a positive electrode for lithium-sulfur battery comprises mixing sulfur (S8) powder, a conductive agent and a binder to give a positive active material slurry that is coated on a current collector where it is disposed in pores on the current collector during an electrochemical reaction; and    (2) positive electrode comprising a current collector coated with the positive active material.    DESCRIPTION OF DRAWING(S) - The figure shows a perspective view of a cross-section of a lithium-sulfur battery.    separator (2)    positive electrode (3)    negative electrode (4)