TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Composition: The carbon paste contains carbon powder chosen from graphite, carbon black and carbon nanotubes, and binder. When the internal electrode is anode and external electrode is cathode, the internal electrode active material layer contains lithium-cobalt oxide, lithium-nickel oxide, lithium-manganese oxide, lithium-cobalt-phosphorus oxide, lithium-iron-phosphorus oxide, lithium-nickel-manganese-cobalt oxide, and lithium-nickel-cobalt oxide (A) (LiNi1-x-y-zCoxM1yM2zO2, where M1 and M2 are chosen from aluminum, nickel, cobalt, iron, manganese, vanadium, chromium, titanium, tungsten, tantalum, magnesium and molybdenum, x, y and z are 0-0.5, sum of x, y and z is 1 or less), and external active material layer contains natural graphite, synthetic graphite, carbonaceous material, lithium-containing titanium composite oxide or oxide of metal chosen from silicon, tin, lithium, zinc, magnesium, cadmium, cesium, nickel and iron. When the external electrode is anode and internal electrode is cathode, the external active material layer contains lithium-cobalt oxide, lithium-nickel oxide, lithium-manganese oxide, lithium-cobalt-phosphorus oxide, lithium-iron-phosphorus oxide, lithium-nickel-manganese-cobalt oxide, and lithium-nickel-cobalt oxide (A), and internal active material layer contains natural graphite, synthetic graphite, carbonaceous material, lithium-containing titanium composite oxide or oxide of metal chosen from silicon, tin, lithium, zinc, magnesium, cadmium, cesium, nickel and iron. The electrolyte layer contains lithium salt chosen from 18 compounds e.g. lithium chloride, lithium bromide, lithium iodide, lithium perchlorate and lithium tetrafluoroborate.    TECHNOLOGY FOCUS - METALLURGY - Preferred Composition: The primary and secondary metal tabs are formed using stainless steel, carbon, aluminum, nickel, titanium, sintered carbon, copper, surface-treated stainless steel, nickel-silver or aluminum-cadmium alloy. The external current collector contains conductive paste chosen from metal or carbon paste. The metal paste contains metal powder chosen from nickel, aluminum, gold, silver, palladium-silver, chromium, tantalum, copper, barium and/or indium-tin oxide, and binder.    TECHNOLOGY FOCUS - POLYMERS - Preferred Composition: The cable-type secondary battery is manufactured using conductive polymer, nonconductive polymer or conductive material. The cable-type secondary battery further consists of heat-sealable macromolecular film containing polyethylene, polypropylene, polyethylene terephthalate, polyamide and polyimide. The conductive material is chosen from polyacetylene, polyaniline, polythiophene, polypyrrole, polysulfur nitride, indium-tin oxide, silver, palladium and nickel. The conductive polymer is chosen from polyacetylene, polyaniline, polypyrrole, polythiophene and polysulfur nitride. The binder is chosen from acrylic resin, vinyl resin, hydroxymethyl cellulose, methyl cellulose, nitrocellulose, ethylene cellulose and modified resin. The separating layer is electrolyte layer or separator. The electrolyte layer contains gel-type polymer electrolyte containing polyethylene oxide, polyvinylidene fluoride, poly(vinylidene fluoride-co-hexafluoropropene), poly(methyl methacrylate), peroxyacytyl nitrate or polyvinyl acetate or solid electrolyte containing polypropylene oxide, polyvinyl acetate, polyethylene oxide, polyethylene imine or polyethylene sulfide. The separator has porous base material formed using ethylene homopolymer, propylene homopolymer, ethylene-butene copolymer, ethylene-hexene copolymer, ethylene-methacrylate copolymer, polyester, polyacetal, polyamide, polycarbonate, polyimide, polyether ether ketone, polyether sulfone, polyphenylene oxide, polyphenylene sulfate, polyolefin or polyethylene naphthalate.