NOVELTY - A direct sodium borohydride fuel cell comprises ferrocene as cathode catalyzer, sodium borohydride aqueous solution having 10 weight% of sodium borohydride and 5 weight% of sodium hydroxide as fuel, air or pure oxygen as oxidant, Nafion (RTM: perfluorinated polymer) as electrolyte, anode catalyzer having mixture of noble metal-type catalyzer having platinum, palladium, gold, silver, and their alloys, non-noble metal catalyzer having nickel, iron, cobalt, manganese, zirconium, titanium and their alloy, and hydrogen storage material.    USE - Direct sodium borohydride fuel cell.    ADVANTAGE - The direct sodium borohydride fuel cell is economical.    DETAILED DESCRIPTION - A direct sodium borohydride fuel cell comprises ferrocene as cathode catalyzer, sodium borohydride aqueous solution having 10 weight% of sodium borohydride and 5 weight% of sodium hydroxide as fuel, air or pure oxygen as oxidant, Nafion (RTM: perfluorinated polymer) as electrolyte, anode catalyzer having mixture of noble metal-type catalyzer having platinum, palladium, gold, silver, and their alloys, non-noble metal catalyzer having nickel, iron, cobalt, manganese, zirconium, titanium and their alloy, hydrogen storage material having nickel-containing compound (MmNi5-xMx), zirconium-titanium-nickel-containing compound (Zr1-xTixNi2-yNy), where x is 0.01-0.5 and y is 0.01-1.5. The cathode of the fuel cell comprises ferrocene as cathode catalyzer. The direct sodium borohydride fuel cell is prepared by resolving ferrocene into organic solution, adding dispersant into the ferrocene solution, adding carbon black to ferrocene solution, filtering after ultrasonic mixing evenly, cleaning with distilled water, deionized water or pure water, drying to prepare the ferrocene-carbon black catalyzer, mixing the ferrocene-carbon black catalyzer, the dispersant and water to prepare paste material, evenly-coating on the cathode basal component, drying to obtain the cathode having ferrocene as catalyzer. The dispersant contains perfluorinated polymer, absolute methanol, absolute ethyl alcohol and water. The organic solvent is tetrahydrofuran, n-hexane, light petroleum, cyclohexane, carbon tetrachloride, carbon bisulfide, toluol, benzene, methylene dichloride, chloroform, ether, propanol or ethanol. The carbon black is active carbon, acetylene black, ball-shaped carbon black, superconductive carbon black or carbon nanotube. The anode catalyzer is nickel, palladium/carbon and hydrogen storage alloy having nickel-aluminum-containing compound (MlNi4Co0.5Al0.5).