TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Method: The method further comprises repeating operation (a) through operation (c) on a resultant from operation (c) at least 1 or 2 additional time. The pH of the mixture in operation (c) is adjusted to 9-13. The heating temperature of the mixture in operation (c) is 90-115 degrees C and the heating rate is 1.5-3.5 degrees C/minute. Preferred Components: The amount of the catalyst metal precursor in operation (a) is 0.2-0.8 parts by weight and the amount of water in the mixture of polyalcohol and water in operation (b) is 40-60 parts by weight, based on 100 parts by weight of the total polyalcohol used in operation (a) and polyalcohol and water used in operation (b). The catalyst metal precursor comprises chloroplatinous acid, chloroplatinic acid, potassium tetrachloroplatinate, potassium hexachloroplatinate, ammonium hexachloro ruthenate, diammonium pentachloro ruthenium monohydrate, dihydrogen tetrachloroaurinate, diammonium tetrachloroaurinate and/or gold (III) nitrate. The carbon-based catalyst support comprises carbon black, Ketjen black (RTM: Electrically conductive carbon black), acetylene black, activated carbon powder, carbon molecular sieve, carbon nanotubes, activated carbon having micropores and/or mesoporous carbon.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: The polyalcohol is ethylene glycol, diethylene glycol or triethylene glycol. EXAMPLE - Chloroplatinic acid monohydrate (1.4656 g, platinum content of 39.8 wt.%), was dissolved in ethylene glycol (EG) (10 g) and then the mixture was prepared. Ketjen black (RTM: Electrically conductive carbon black) having a surface area of 800 m2/g) (0.25 g) was added to the solution of EG (267 g) and water (150 g of EG, 117 g of water) and then, the solution was dispersed by sonicating for 20 minutes. The metal precursor mixture and the carbon-dispersed mixture were stirred for 10 minutes. Then, the pH of the resultant was adjusted to 11 with a solution of 1M sodium hydroxide and once more, stirred for 10 minutes. The resultant was maintained for 2 hours after raising the temperature to 105 degrees C in 35 minutes (heating rate was 2.29 degrees C/minute) at room temperature (25 degrees C). The temperature of the resultant was then raised to 110 degrees C, maintained again for 1 hour, and then, cooled down to room temperature. The metal precursor solution (chloroplatinic acid monohydrate (1.4656 g) and EG (10 g)) and water (6 g) were added to the resultant at room temperature and the pH of the resultant was adjusted to 11. Such a heating process was performed once more, to obtain a catalyst, which was washed 3 to 4 times using a centrifugal separator and dried in a lyophilizer, to obtain platinum/carbon catalyst having a multi-layer structure (82.4 wt.%).