TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Composition: The amide compound is N-methoxyethyl trifluoroethyl carbamate, N-methoxyethyl-N-methyl trifluoroethyl carbamate, N-methoxymethyl-N-methyl trifluoroethyl carbamate, N-methoxymethyl trifluoroethyl carbamate, N-methoxymethyl-N-ethyl trifluoroethyl carbamate, N-methoxyethyl-N-ethyl trifluoroethyl carbamate, N-methoxyethyl fluoroethyl carbamate, N-methoxyethyl-N-methyl fluoroethyl carbamate, N-methoxymethyl-N-methyl fluoroethyl carbamate, N-methoxymethyl fluoroethyl carbamate, N-methoxymethyl-N-ethyl fluoroethyl carbamate, N-methoxyethyl-N-ethyl fluoroethyl carbamate, N-methoxyethyl pentafluoropropyl carbamate, N-methoxyethyl-N-methyl pentafluoropropyl carbamate, N-methoxymethyl-N-methyl pentafluoropropyl carbamate, N-methoxymethyl pentafluoropropyl carbamate, N-methoxymethyl-N-ethyl pentafluoropropyl carbamate, N-methoxyethyl-N-ethyl pentafluoropropyl carbamate, N-methoxyethyl hexafluoro-2-propylcarbamate, N-methoxyethyl-N-methyl hexafluoro-2-propylcarbamate, N-methoxymethyl-N-methyl hexafluoro-2-propylcarbamate, N-methoxymethyl hexafluoro-2-propylcarbamate, N-methoxymethyl-N-ethyl hexafluoro-2-propylcarbamate or N-methoxyethyl-N-ethyl hexafluoro-2-propylcarbamate. The negative ion of the lithium salt is fluoride chloride, bromide, iodide, nitrate, cyano imide, boron tetrafluoride, perchlorate, hexafluorophosphate, bis(trifluoromethyl)tetrafluorophosphate, tris(trifluoromethyl)trifluorophosphate, tetrakis(trifluoromethyl)difluorophosphate, pentakis(trifluoromethyl)monofluorophosphate, hexakis(trifluoromethyl)phosphate, pentafluoroethyl sulfonate, bis(trifluoromethyl sulfonyl)imide, bis(fluorosulfonyl)imide, pentafluoroethyl-di(trifluoromethyl)carbonyl, bis(trifluoromethanesulfonyl)methide, tris( trifluoromethanesulfonyl)methide, perfluorooctyl sulfonate, trifluoromethyl carbonate, methyl carbonate, thiocyanate or bis(pentafluoroethyl sulfonyl)imide. The electrolyte contains amide compound and lithium salt in the mol ratio of 1-8:1. Preferred Properties: The electrolyte has potential window of 0.4-5.0 V. The electrolyte has viscosity is 200 cP or less and ion conductance of 1-3 mS/cm. The electrolyte further comprises carbonate chosen from chain carbonate and cyclic carbonate or linear ester. The carbonate is preferably polypropylene carbonate, ethylene carbonate, diethyl carbonate, dimethyl carbonate, dipropyl carbonate, butylene carbonate, methylpropyl carbonate, ethylpropyl carbonate, dimethyl sulfoxide, acetonitrile, dimethoxyethane, diethoxyethane, tetrahydrofuran, N-methyl-2-pyrrolidone, ethylmethylcarbonate and ( gamma )-butyrolactone. The content of the carbonate type compound is 5-200 parts weight with respect to 100 parts weight of the amide compound. The linear ester is methyl propionate, ethyl propionate, propyl propionate or butylpropionate.    TECHNOLOGY FOCUS - POLYMERS - Preferred Composition: The electrolyte is polymer electrolyte of gel-like which is mixed with the precursor solution containing the monomer forming the polymer by the polymerization reaction and is formed by the polymerization of the solution.