TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: The inorganic nano-material is titania, silica, zirconia, molybdenum dioxide, stannic oxide, tungsten trioxide, zinc oxide, indium tin oxide, barium titanate, niobium pentoxide, indium(III) oxide, tantalum pentoxide, lanthanum oxide, strontium titanate, yttria, holmium(III) oxide, bismuth oxide, ceria and/or alumina. The inorganic nano-material has average particle diameter of 10-1000 nm. The inorganic nano-materials are nanorods having average diameter of 10-1000 nm and a length of 10-1000 nm. The electrolyte is halogen-based redox pair consisting of halide ion (iodide, bromide or chloride) and polyhalide ion (triiodide, pentaiodide, heptaiodide, tribromide, dichloroiodide, chlorodiiodide, dibromoiodide or bromodiiodide anion).    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: The solvent is dimethylformamide, toluene, tetrahydrofuran, dimethyl sulfoxide, dimethylacetamide, N-methylpyrrolidone, chloroform, dichloromethane, carbon tetrachloride, trichlorobenzene, benzene, cresol, xylene, acetone, methyl ethyl ketone, acrylonitrile, cyclohexane, cyclohexanone, ethyl ether, hexane, isopropyl alcohol, methanol and ethanol. The electrolyte solution comprises the electrolyte and the solvent.    TECHNOLOGY FOCUS - POLYMERS - Preferred Components: The diameter of ultra-fine fibers is 10-1000 nm. The hydrophilic polymer is polyvinyl pyrrolidone, polyethylene, polypropylene, poly(1-4C)alkylene glycol, polyethyleneimine, polyvinyl alcohol, polyacrylic acid, polyurethane, polydiethylaminoethyl (meth)acrylate, polyvinylpyridine, polydodecyl (meth)acrylamide, polyvinylpyridine oxide, polyaminostyrene, polyallylamine hydrochloride, polymethylvinylamine or ethylene-propylene-diene monomer. The hydrophobic polymer is polyacrylonitrile, polymethyl methacrylate, polyacrylate, polyamide, polyaramide, polyarylethersulfone, polyethersulfone, polysulfone, polyaryl sulfone, the polycarbonate, polyether, polyether imide, poly(1-4C)alkylene oxide, polyvinyl chloride, polyvinylidene fluoride, polyvinylidene fluoride-co-chlorotrifluoroethylene, polychlorotrifluoroethylene, polydichlorodifluoromethane, polyvinylidene dichloride, polystyrene, polyalkylstyrene, polyisoprene, polybutadiene, polyacrylamide and/or polyvinyl ether. The combinations of hydrophilic polymer and hydrophobic polymer are polyvinyl pyrrolidone/polystyrene, polybutadiene/polystyrene, polyethylene/polystyrene, polypropylene/polystyrene, ethylene-propylene diene/polyisobutylene and polyvinyl pyridine/polystyrene. The hydrophilic polymer and hydrophobic polymer comprise solid content according to the weight ratio of 2:8-8:2. The hybrid nano-fiber matrix comprises 0.1-20 pts. wt. inorganic nano-materials, based on 100 pts. wt. ultra-fine fibers. The polymer electrolyte comprises 0.1-100 pts. wt. electrolyte, based on 100 pts. wt. hybrid nano-fiber matrix. Preferred Method: The electrospinning is performed by using spinneret of 0.005-0.5 mm diameter under voltage of 5-50 V by maintaining the distance between emitter and collector at 5-20 cm and spinning solution flow rate at 0.05-5 ml/hour. The spray solution has a concentration of 1-20 wt.%.