TECHNOLOGY FOCUS - POLYMERS - Preferred Component: The absorbent also consists of particles of porous polymer(s) comprising polyethylene, polypropylene, polystyrene, polyurethane, pulp, cellulose, cork and/or wood powder. The mesoporous molecular sieves can also be made of polymers. The polymer binder includes copolymer(s) of polyvinylidene fluoride, vinylidene fluoride and hexafluoropropylene, copolymer(s) of vinylidene fluoride and maleic anhydride, polyvinylchloride, polymethyl(meth)acrylate, cellulose triacetate, polyurethane, polysulfone, polyether, polyethylene, polypropylene, polyethylene oxide, polyisobutylene, polybutylidene, polyvinylalcohol, polyacrylonitrile, polyimide, polyvinyl formal, acrylonitrilebutyldiene rubber, ethylene-propylene-diene monomer, tetraethyleneglycol diacrylate, polydimethylsiloxane, polycarbonate, silicon polymer and/or their copolymer.    TECHNOLOGY FOCUS - ELECTRICAL POWER AND ENERGY - Preferred Method: The electrolyte film is prepared by (a) a wet process involving dissolving a mixture of the absorbent and a polymer binder in a solvent for the binder, transforming the formed solution into a film, exchanging the solvent with a non-solvent for the binder and drying the formed material; or (b) a dry process comprising dissolving a mixture of the absorbent and a polymer binder in a solvent for the binder, adding a non-solvent for the binder, a pore former and a dipping agent to the formed solution and transforming the resulting solution into a film and drying the film. The solid electrolyte is prepared by an activation method in which the liquid electrolyte is absorbed into the electrolyte film.    TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Component: The liquid electrolyte comprises lithium salt(s) of formulae LiClO4 , LiBF4, LiPF6, LiAsF6, LiSCN, LiCF3SO3, LiN(CF3SO2)2 and/or LiC(CF3SO2)3. The absorbent comprises particles of mineral(s) comprising clay, paragonite, montmorillonite and/or mica; particles of synthetic oxide compound(s) comprising zeolite, porous silica and/or porous alumina; and/or mesoporous molecular sieves with 2-30 nm pore diameter made of oxide compounds.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Component: The liquid electrolyte also includes solvent(s) comprising 0.5-2 M ethylene carbonate, propylene carbonate, dimethylcarbonate, diethylcarbonate, ethylmethyl carbonate, gamma-butyrolactone, 1,3-dioxane, tetrahydrofuran, 2-methyltetrahydrofuran, dimethylsulfoxide, sulfolane, N,N-dimethylformamide, diglyme, triglyme and/or tetraglyme. The solvent for the polymer binder is N-methylpyrrolidinone, dimethylformamide, dimethylacetamide, tetrahydrofuran, acetonitrile, cyclohexanone, chloroform, dichloromethane, hexamethylphosphoramide dimethylsulfoxide, acetone and/or dioxane. The non-solvent for the polymer binder is water, ethanol, ethylene glycol, glycerol, acetone, dichloromethane, ethylacetate, butanol, pentanol, and/or hexanol.