TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Layer: The cathode active material layer has sequential laminate of cathode active material layer (A) arranged at collector side and cathode active material layer (B) arranged on electrolyte layer side and containing oxidation-type sulfur material.Preferred Material: The anode active material mainly contains lithium nickel type complex oxide. The cathode active material contains oxidation-type sulfur material in the form of complex electroconductive sulfur material, and electroconductive material. The electroconductive material is carbon material.    TECHNOLOGY FOCUS - POLYMERS - Preferred Compound: The oxidation-type sulfur material is polymer containing carbon sulfide compound and organic poly sulfide group monomer as main components. EXAMPLE - The cathode active material slurry was prepared by mixing hard carbon (in mass parts) (90) having average particle diameter of 8 microns, polyvinylidene fluoride (PVdF) (10) and N-methyl-2-pyrrolidone (NMP). The prepared slurry was applied on both surface of copper foil (collector) having average thickness of 15 microns, dried and laminated to form cathode active layer (A) (laminate) having thickness of 90 microns. Sulfur powder (0.01 g) was dissolved in carbon disulfide (100 g) to prepare sulfur solution. The prepared sulfur solution was applied on obtained laminate, dried to form cathode active material layer (B) and cathode was obtained. The sulfur content per unit area of cathode was 0.02 mg/cm2. The anode active material slurry was prepared using acetylene black (5), lithium nickel type complex oxide (90) of formula: LiNi0.8Co0.15Al0.05O2 and having average particle diameter of 10 microns, PVdF (5) and NMP. The prepared slurry was applied on both surface of aluminum foil (collector) having average thickness of 20 microns, dried and laminated to form anode active layer (laminate) having thickness of 105 microns and anode was obtained. The electrolyte liquid was prepared by dissolving lithium hexafluorophosphate in equal volume of liquid mixture containing propylene carbonate and dimethyl carbonate. The cathode and 10 anodes were stacked through separator to obtain battery element. The aluminum lead was welded to each anode and nickel lead was welded to each cathode. The prepared electrolyte liquid was injected into battery element after drying using vaccum dryer and sealed to form cell (secondary battery). The secondary battery had excellent charging and discharging characteristics, durability and reliability even at high temperature, high quality and was safe.