TECHNOLOGY FOCUS - POLYMERS - Preferred Composition: The composition contains a fused salt monomer and a copolymerizable polyfunctional monomer. The fused salt monomer contains quaternary ammonium cation and anion. The cation is selected from 1-vinyl-3-alkyl imidazolium ion, 4-vinyl-1-alkyl pyridinium cation, 1-alkyl-3-allyl imidazolium ion, 1-(4-vinyl benzyl)-3-alkyl imidazolium ion, 1-(vinyl oxyethyl)-3-alkyl imidazolium ion, 1-vinyl imidazolium ion, 1-allyl imidazolium ion and N-allyl benzimidazolium ion. The anion is selected from bis((trifluoromethyl)sulfonyl) amide anion, 2,2,2-trifluoro-N-(trifluoromethyl sulfonyl) acetamide anion, bis((pentafluoro ethyl) sulfonyl) amide anion, bis((fluoro) sulfonyl) amide anion, tetrafluoro borate anion and trifluoromethane sulfonate anion.Preferred Reinforcing Material: The reinforcing material is chosen from polytetrafluoroethylene, polyvinylidene fluoride, polyethylene, polypropylene, polyacrylonitrile, polystyrene, polysulfone, polyether sulfone, polyether ketone, polyether ether ketone, polyether imide, polyamidoimide and polyimide, preferably polyvinylidene fluoride containing 1 carbon-carbon double bond. The polymeric reinforcing material is a porous film or sheet having continuous holes, and polymer of the fused salt monomer forms a continuous phase in the porous film or the sheet.Preferred Monomer: The monomer composition is polymerized by heat, ultraviolet irradiation or electron beam irradiation.    TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Ion Source: The charge transfer ion source is chosen from lithium tetrafluoroborate, lithium hexafluorophosphate, CnF2n+1CO2Li, CnF2n+1SO3Li, where n is 1-4, bis(fluoro sulfonyl) lithium amide ((FSO2)2NLi), bis(trifluoromethyl sulfonyl) lithium amide ((CF3SO2)2NLi), bis(perfluoroethyl sulfonyl) lithium amide ((C2F5SO2)2NLi), (CF3SO2)3CLi, (CF3-SO2-N-COCF3)Li or (R-SO2-N-SO2CF3)Li, where R is alkyl or aryl. Alternately, the charge transfer ion source is selected from HBF4, HBF6, CnF2n+1CO2H, CnF2n+1SO3H, where n is 1-4, (FSO2)NH, (CF3SO2)NH, (C2F5SO2)NH, (CF3SO2)3CH, (CF3-SO2-NH-COCF3) or (R-SO2-NH-SO2CF3), where R is alkyl or aryl. More preferably the ion source is I3-/I- or Br3-/Br- redox ion pair. EXAMPLE - 1-methyl imidazole (in g) (37) was dissolved in 200 ml of 1,1,1-trichloroethane. Solution formed by dissolving p-chloromethyl styrene (68.7) in 100 ml of 1,1,1-trichloroethane was dropped into the above solution and stirred at room temperature. The reaction mixture was further stirred at 65 degreesC for 10 hours. The reaction product was washed and dried, and 1-methyl-3-(4-vinylbenzyl)imidazolium chloride (MVBI.CI) (52.8) of pale yellow color was obtained. Potassium bis((trifluoromethyl) sulfonyl)amide (KTFSI) (31.9) dissolved in 100 ml of water was added with solution formed by dissolving MVBI.CI (23.4) in water (50 ml) and stirred at 50 degreesC for 15 minutes. Double decomposition reaction was performed for 2 hours, stirred at 50 degreesC and oil layer formed was separated. The product was washed twice and dried and 1-methyl-3-(4-vinyl benzyl)imidazolium bis((trifluoromethyl) sulfonyl) amide (MVBI.TFSI) (0.8) was obtained. Solution formed by dissolving (MVBI.TFSI) (8.4), polyvinylidene fluoride modified polymer (10) and benzoyl peroxide (0.17) was added with lithium ((trifluoromethyl) sulfonyl) amide (4.0) and electrolyte precursor liquid was prepared. The obtained liquid was coated on a polyester film of thickness 100 mum, heated for 30 minutes at 130 degreesC and simultaneously polymerized. The coated film was peeled off from the polyester film and transparent film of thickness 25 mum was formed. The film had ionic conductivity of 2.1x10power-3 S/cm and peeling strength of 11 MPa.