NOVELTY - Nitrogen-containing carbon alloy obtained by baking an organic material comprising a nitrogen-containing crystalline organic compound having a molecular weight of 60-2000, is claimed. The nitrogen-containing crystalline organic compound excludes a nitrogen-containing metal complex.    USE - The nitrogen-containing carbon alloy is useful in a carbon catalyst, which is useful in a fuel cell and an electrical storage device (all claimed). The carbon catalyst is useful in exhaust gas purification or for purifying water.    ADVANTAGE - The nitrogen-containing carbon alloy: provides an environmental catalyst at a lower cost by using the carbon catalyst in place of expensive noble metals (platinum), which are uniformly supported, has a large specific surface area and capable of decomposing substances to be removed per unit volume, and exhibits high oxygen reduction activity, improved conductivity, and improved catalyst life; is obtained by baking a low-molecular organic compound which is easy to purify, has crystallinity, and exhibits heat resistance due to vibration relaxation by phonons (quantized lattice vibration), thus maintaining the decomposition temperature to the carbonization temperature so that carbonization is accomplished with reduced vaporization of decomposition products to form a carbon alloy structure; and utilizes volatile-retardant N-containing crystalline organic compound (having a Delta TG value (percent mass loss of the organic material i.e. N-containing crystalline organic compound or mixture of N-containing crystalline organic compound and inorganic metal or inorganic metal salt) of -95 to -0.1% at 400 degrees C in a nitrogen atmosphere), which is prevented from decomposing during baking, thus increasing the carbon yield.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for:    (1) producing the nitrogen-containing carbon alloy comprising: mixing the nitrogen-containing crystalline organic compound and the at least one of inorganic metal and the inorganic metal salt; raising a temperature of the mixture from room temperature to a carbonization temperature of the mixture in an inert atmosphere at a rate of 1-1000 degrees C/minute; maintaining the mixture at 500-1000 degrees C for 0.1-100 hours to achieve carbonization; and cooling the carbonized mixture from the carbonization temperature to room temperature; and    (2) a fuel cell comprising carbon catalyst and a polyelectrolyte.    DESCRIPTION OF DRAWING(S) - The figure shows an electrical double layer capacitor having a carbon alloy.    Electrical double layer capacitor (20)    First electrode (21)    Second electrode (22)    Separator (23)    Current collectors (25)