NOVELTY - The battery has an organic / inorganic porous coating layer formed with a mixture of binder polymer for inorganic particles and separation film. The separation film is formed with a porous base material that is provided with pores. The pores are formed between an anode and a cathode. Electrolyte is interposed between the cathode and the anode and provided with cyclic carbonate organic solvent. Cathode active material is provided with cobalt complex oxide and lithium manganese oxide. Permittivity constant of inorganic particle is 5. The cathode is made of graphite line active material.    USE - Lithium secondary battery.    ADVANTAGE - The cathode active material is formed with an anode active material layer so as to increase tap density, facilitate manufacture of a high capacity battery and improve smoothness and levering property of the anode active material layer. The porous coating layer is formed with the mixture of the binder polymer for the inorganic particle and separation film so as to show a preferred interfacial property with the porous coating layer of the separation film and improve mechanical stability and battery capacity.    DETAILED DESCRIPTION - The inorganic particle is selected from barium titanium oxide, lead tri oxide, zirconium titanium oxide, stannic oxide, celium di oxide, magnesium oxide, nickel oxide, calcium oxide, zinc oxide, cerium di oxide, silicon di oxide, Yttriumoxide, aluminum di oxide, silicon carbonate, titanium oxide, lithium phosphate, lithium titanium phosphates, lithium aluminum titanium phosphates, series glasses, lithium lanthanum titanates, lithium germanium thiophosphates and lithium nitrides. The binder polymer is polyvinyl fluorife-hexafluoropropylene, polyvinylidene fluoride - trichloroethylene, polymethyl methacrylate, polybutylacrylate, polyacrylonitrile, polyvinyl pyrrolidone, polyvinylacetate, ethylene-vinyl acetate copolymer, polyethylene oxide, polyarylate, cellulose acetate, cellulose acetate butylate, cellulose acetate propionate, cyanoethyl pollutant, cyanoethyl polyvinyl alcohol, yanoethylcellulose, cyanoethyl sucrose, flurane pollutant and carboxyl methyl cellulose. The cyclic carbonate organic solvent contains lithium hexafluorophosphate.    DESCRIPTION OF DRAWING(S) - The drawing shows a graphical view of a lithium secondary battery.'(Drawing includes non-English language text)'