NOVELTY - A multi-walled carbon nanotube is added to deionized water and subjected to ultrasonic treatment. Mixed solution of cerium ammonium nitrate and zirconium nitrate, polyethylene glycol, aqueous ammonia and sodium hydroxide are added and reacted, to obtain a solid. Resultant product is washed and dried, to obtain carbon-supported cerium-zirconium solid solution. Solution is dispersed in chitosan solution and spread on glassy carbon electrode. Electrolysis is carried out in presence of counter and reference electrodes, to obtain direct-methanol fuel cell anode catalyst.    USE - Preparation of direct-methanol fuel cell anode catalyst.    ADVANTAGE - The direct-methanol fuel cell anode catalyst having excellent activity of methanol oxidation, carbon monoxide resistance and thermal stability is economically prepared by simple process.    DETAILED DESCRIPTION - A multi-walled carbon nanotube is added to deionized water and subjected to ultrasonic treatment for 5 minutes. A mixed solution of cerium ammonium nitrate and zirconium nitrate having molar ratio of 1:1 is added to the resulted mixture. Then, polyethylene glycol (2 %mass) having molecular weight of 600 is added to the obtained solution. To the resultant solution, 2.6 mol/L of aqueous ammonia is added drop wise and pH value of the solution is adjusted to 9. Then, 5 ml of sodium hydroxide solution (0.3 mmol/L) is added to the obtained solution. The resultant solution is passed to high-energy ultrasonic reactor (20 kHz, 60 W/cm2), reacted for 2 hours and a solid is obtained. The obtained solid is washed with deionized water and absolute ethanol, and dried, to obtain carbon-supported cerium-zirconium solid solution. Then, chitosan (100 mg) is dissolved in aqueous acetic acid solution (100 mL) and pH is adjusted to 4-5 using sodium hydroxide solution, to obtain chitosan solution. The carbon-supported cerium-zirconium solid solution (2 mg) is dispersed in the obtained chitosan solution (1 ml), 8 mu L of dispersed solution is taken out and spread on the surface of glassy carbon electrode having diameter of 3 mm. The electrode is dried at room temperature. Molybdenum sheet is used as counter electrode and silver/silver chloride is used as reference electrode. Sulfuric acid solution at (0.5 mol/L) is added, to maintain scanning speed and scanning voltage of 50 mV/second and -0.2-0.9 V, respectively. Then, chloroplatinic acid is added to sulfuric acid solution so that the concentration is 2.5 mmol/L, to maintain scanning speed and scanning voltage of 50 mV/second per cycle and -0.2-0.9 V, respectively. Then, electrolysis is carried out, to obtain platinum/cerium oxide-zirconium dioxide/multi-walled carbon nanotube composite direct-methanol fuel cell anode catalyst.