TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Compounds: The alkali liquor is sodium hydroxide solution or potassium hydroxide solution.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Compounds: The polar volatile dissolvent is N-methylpyrrolidone, N,N-dimethylformamide, N,N-dimethylacetamide, dimethyl sulfoxide, chloroform, or dichloroethane. The compound ammonium agent comprises lower amine, long-chain diamine, polyamine, or heterocyclic compound. The long-chain diamine is of formula: (R1)2N-(CH2)n-N(-R2)2.R1,R2=methyl, ethyl, propyl or isopropyl;andn=1-18.The lower amine comprises trimethylamine, triethylamine, ethylenediamine, propanediamine, dimethylamine, diethylamine or propylamine. The long-chain diamine, polyamine, or heterocyclic compound comprises N,N,N',N'-tetramethylenediamine, N,N,N',N'-tetramethylethylenediamine, N,N,N',N'-tetramethylpropane-1,3-diamine, N,N,N',N'-tetramethylbutanediamine, N,N,N',N'-tetramethylhexamethylenediamine, tetraethylethylene diamine, phenylenediamine, imidazole (derivative), pyrrolidine (derivative), piperazine (derivative), pyridine (derivative), such as 4,4'-bipyridyl, pentamethyldiethylenetriamine, and/or diethylenetriamine.    TECHNOLOGY FOCUS - POLYMERS - Preferred Components: The film contains poly(phthalazinone ether biphenyl ketone), polyethylene ketone, polyether sulfone, poly(ether sulfone ketone), poly(ether nitrile ketone), poly(ether nitrile ketone ketone), polyarylether containing phthalazinone biphenyl structure, or their copolymer as carrier resin. Preferred Method: Halogenated heterocyclic polyarylether is dissolved in polar volatile dissolvent and mixed polar volatile dissolvent, to obtain 5-30% of film casting liquid. The compound ammonium agent is added and stirred for 1-24 hours at 10-100 degrees C and left for one night. The liquid is coated, baked for 4-36 hours at 40-100 degrees C, immersed into another compound ammonium agent, and aminated for 6-72 hours in a water bath at 10-100 degrees C. The film is immersed in alkali liquor, completely washed with ionized water, and dried to obtain a crosslinked heterocyclic polyarylether alkaline electrolyte film. The film casting process is coating.