TECHNOLOGY FOCUS - ELECTRICAL POWER AND ENERGY - Preferred Components: The fuel electrode and the oxygen electrode further comprise a porous catalyzing layer (2a, 3a) and a porous carbon sheet (2b, 3b) supporting the porous catalyzing layer. The porous catalyzing layer further comprises an electrode catalyst, a hydrophobic binder and a conducting agent.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Materials: The proton conductive electrolyte may further comprise a phosphate-containing compound, preferably orthophosphate, metaphosphate or polyphosphate.    TECHNOLOGY FOCUS - POLYMERS - Preferred Polymers: The polyamidic acid derivative is of formula -(NH-C(=O)-Ar((COOH)b)((CONHSO3H)a)-C(=O)-NH-R)n-.Ar=aromatic ring or group including aromatic ring;R=alkyl (preferably 3-12C alkyl);a, b=0-2;a+b=2;n=102-104.It is a compound in which the carboxyl group is completely or partially amidosulfonated. The polyamidic acid derivative is mixed with a polyvinyl sulfamic acid copolymer of formula -(CH(R1)-C(R2)(CONHSO3H))n-(CH2-CH(R3))m- at a mass ratio of 9:1-1:1.R1=H, COOH, CONHSO3H or aromatic group;R2=H or CH3;R3=COOH, alkoxy, halo, ester, or aromatic group;m, n=102-3x104.The proton conductive electrolyte further comprises a polytetrafluoroethylene polymer; and a basic polymer, preferably nitrogen-containing polymer, oxygen-containing polymer or sulfur-containing polymer. Preferred Method: The polyamidic acid derivative is obtained by completely or partially reacting the carboxylic acid group with carbonyl chloride, reacting the resultant with amidosulfonate triethylamine salts, and then cation exchanging the resulting product. Preferred Method: The average polymerization ratio (n/m) of the polyvinyl sulfamic acid copolymer is 3:7-7:3. EXAMPLE - Polyamidic acid (1.17 g) was dissolved in dehydrated dimethylformamide (100 mL). Thionyl chloride (1.78 g) was slowly added to the resulting solution under nitrogen atmosphere. The resulting product was stirred at room temperature for 6 hours. Sulfamic acid (2.91 g) and triethylamine (3.03 g) were mixed with dehydrated dichloromethane (15 mL) to produce amidosulfonate triethylamine salts. Then, the resulting product was slowly added to the polymer solution under nitrogen atmosphere, and stirred at room temperature for 16 hours. The solvent of the reaction solution was removed in pressure at 50degreesC and then pure water (100 mL) was added and the resulting product was stirred at room temperature for 1 hour. Then, the resulting solution was centrifuged at 4000 rpm for 10 minutes and then the supernatant was removed and the remaining solids were filtered. The collected resulting product was dissolved in dimethylformamide (100 mL), passed through cation exchange resin (250 mL) and proton exchanged. The treated solution was concentrated to 10 mL and added to pure water (200 mL) to separate the precipitates. Then, the resulting product was heated and dried in vacuum at 70degreesC for a day to obtain polyamide sulfamic acid as a light brown powder (0.68 g, 42% yield). The obtained polyamide sulfamic acid was dissolved in dimethyl acetamide and the resulting product was cast on glass plate, heated and dried at 60degreesC to obtain a light brown transparent membrane.