TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Compounds: The amide compound (I) or (II) is chosen from methylcarbamate, ethylcarbamate, N-ethylacetamide, N-methyl urea, N,N'-dimethyl urea, methyl N-methylcarbamate, ethyl N-methylcarbamate, ethyl N-ethylcarbamate, N-ethyl methylcarbamate, ethyl N,N-dimethylcarbamate, methyl N,N-dimethylcarbamate, N-methylcaprolactam, oxazolidone, N-methyl oxazolidone, N,N-dimethylphenylcarbamate, N-butyl methylcarbamate, N-phenyl methylcarbamate, N-ethyl-N-phenylethylcarbamate, N-methoxyethyl methylcarbamate, N-methoxyethyl-N-methyl methylcarbamate, N-methoxymethyl-N-methyl methylcarbamate, N,N-dimethyl-methoxy-ethylcarbamate, N-methyl-N-methoxy-ethylcarbamate and N-methyl-N-methoxyethyl-methoxy-methylcarbamate. The fluoroether compound (0.5-20 weight%) is of formula: Cn1H2n1+1OCm1F2m1+1F, preferably methyl nonafluorobutyl ether, ethyl nonafluorobutyl ether, propyl nonafluorobutyl ether, methyl heptafluoropropyl ether and ethyl heptafluoropropyl ether.n1=1-4;andm1=3-6.Preferred Composition: The molar ratio of amide compound and lithium salt is 1-8:1. The carbonate-type compound is chosen from linear carbonate and/or cyclic carbonate, preferably polypropylene carbonate, ethylene carbonate, diethyl carbonate, dimethyl carbonate, dipropyl carbonate, butylene carbonate, methylpropyl carbonate, ethylpropyl carbonate, dimethylsulfoxide, acetonitrile, dimethoxyethane, diethoxyethane, tetrahydrofuran, N-methylpyrrolidone, ethylmethyl carbonate and/or ( gamma )-butyrolactone. The monomer is vinyl monomer chosen from acetonitrile, methyl methacrylate, methyl acrylate, methyl acrylonitrile, methyl styrene, vinyl ester, vinyl chloride, vinylidene chloride, acrylamide, tetrafluoroethylene, vinyl acetate, methyl vinyl ketone, ethylene and styrene. The anion of lithium salt is chosen from fluoride ion, chloride ion, bromide ion, iodide ion, nitrate ion, tetrafluoroborate ion, perchlorate ion, hexafluorophosphate ion, thiocyanate ion, pentafluoroethyl sulfonyl imide ion, methyl carbonate ion, trifluoromethyl carbonate ion, trifluoromethylsulfonyl carbide ion, hexatrifluoromethyl phosphide ion, trifluoromethyl sulfonate ion, pentafluoroethyl sulfonate ion and bis(trifluorosulfonyl)imide ion.    TECHNOLOGY FOCUS - POLYMERS - Preferred Composition: The electrolyte is polymer electrolyte obtained by polymerizing precursor solution containing monomer, and further contains carbonate-type compound. The polymer electrolyte is further dipped into a polymer chosen from polymethyl methacrylate, polyvinylidene difluoride, polyvinyl chloride, polyethylene oxide and polyhydroxyethyl methacrylate.