TECHNOLOGY FOCUS - POLYMERS - Preferred Components: The PAN group polymer is poly(acrylonitrile-methylacrylate) or polyacrylonitrile, and PMMA group polymer is poly(methylmethacrylate-co-methacrylic acid), poly(methylmethacrylate-co-ethylacrylate) or polymethylmethacrylate. PVdF group polymer is polyvinylidene difluoride, poly(vinylidene difluoride-hexafluoropropylene) and PVC group polymer is selected from polyvinylchloride and poly(vinyl chloride-co-acrylonitrile).    TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: The lithium salt is selected from lithium hexafluorophosphate (LiPF6), lithium perchlorate, lithium arsenic fluoride (LiAsF6), lithium borofluoride (LiBF4), lithium trifluoro methane sulfonate (LiCF3SO3) and/or lithium trifluoromethyl sulfonyl nitrite (Li(CF3SO2)2N).    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Solvent: The organic solvent is ethylene carbonate, propylene carbonate, diethyl carbonate, dimethyl carbonate and/or ethylmethyl carbonate. The organic solvent further comprises a solvent chosen from methyl acetate, methyl propionate, ethyl acetate, ethyl propionate, butylene carbonate, gamma-butyrolactone, 1,2-dimethoxyethane, dimethylacetamide and/or tetrahydrofuran.Preferred Components: The gelled polymer electrolyte layer further comprises a plasticizer or a porous filler. The plasticizer is chosen from N,N-dimethyl acetamide, N,N-dimethylformamide, dimethyl carbonate, ethylene carbonate, ethylmethyl carbonate, propylene carbonate and/or acetonitrile. The porous filler comprises titania, barium titanate, lithia, lithium fluoride, lithium hydroxide, lithium nitride, barium oxide, sodium oxide, magnesium oxide, lithium carbonate, lithium aluminite, silica, alumina, polytetrafluoro ethylene, organic filler and/or polymeric filler.Preferred Active Material: The cathode comprises a cathode active material comprising lithium cobaltate, lithium nickelate, lithium nickel cobaltate, lithium manganate, vanadium pentoxide or vanadium sesquioxide. The anode comprises an anode active material chosen from graphite, coke, hard carbon, tin oxide, lithiated compounds like metallic lithium and lithium alloys. The battery has a mono-cell or bi-cell structure. EXAMPLE - Polyacrylonitrile (2 g), polyvinylidene difluoride (2 g) and lithium hexafluorophosphate solution in ethylene carbonate-dimethyl carbonate solution (25 g), were mixed for 12 hours and heated at 130degreesC for 1 hour, to obtain a clear polymeric solution of viscosity 3000. The obtained solution was cast on a polyethylene film surface to form a double-layered polymer electrolyte. The obtained electrolyte was adhered on a graphite anode and was stacked with lithium cobaltate cathode. The terminals were welded on to the electrodes and the cell was inserted into a vacuum casing. 1M lithium hexafluorophosphate solution in ethylene carbonate-dimethyl carbonate was injected to the casing and the case was vacuum sealed to obtain a lithium secondary battery. The electrolyte showed improvement in electrode capacities and cycle life of batteries. Surface resistance was reduced since adhesive force between the electrodes and the electrolyte was good. Ionic conductivity of the electrolyte was good.