TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Process: The hydrazone polymer compound is obtained by polymerizing at least one hydrazone compound (I), a phenol, and an aldehyde. WIDER DISCLOSURE - Also disclosed (I) as new.    EXAMPLE - 2-Hydrazinopyridine (33.8 g) and methanol (2 l) were charged into a four-neck flask and concentrated sulfuric acid (1 ml) was then dropwise added at room temperature under stirring. Then, 2,4-dihydroxyacetophenone (44 g) was charged and a reaction was conducted for 8 hours at 40 degrees C under stirring. The precipitated crystals were taken out by filtration, washed with methanol and water and dried at 60 degrees C to obtain 4-(1-((2-pyridine-2-yl)hydrazono)ethyl)benzene-1,3-diol (A) (33 g, 50%) in the form of light-yellow crystals. The compound (A) (8 g) was suspended in an aqueous solution of ethanol (100 ml) and a hydrazone solution was prepared. Then, phenol (4 g), formaldehyde (4 ml) and sodium hydroxide (NaOH) (0.25 g) were added to the hydrazone solution, reflux under heating was performed at 110 degrees C, and the reaction was conducted for 6 hours. After the reaction, the pH value was adjusted to 2 to 3 with an aqueous solution of hydrochloric acid (HCl), and the reaction was further continued for 1 hour. The suspension obtained was neutralized with an aqueous solution of NaOH, followed by filtration. The residue was washed three times with an aqueous solution of acetone to obtain the hydrazone polymer compound (B) and was dried for 3 hours at 65 degrees C. The compound (B) (0.5 g) was mixed and stirred with acetone (100 ml). Then, Co(AcO)2.4H2O (0.08 g), Ni(AcO)2.4H2O (0.13 g), and Fe(AcO)2.4H2O (0.08 g) were added and the components were stirred. Then 100 ml of a 1 M aqueous solution of NaOH was then added and the pH value was adjusted to about 9. The system was stirred for 10 hours, followed by filtration. The residue was washed several times with water. The solid matter obtained (hydrazone metal complex (C)) was vacuum dried at 65 degrees C. The metal complex (C) (1 g) was mixed and stirred with acetone (20 ml). Then, Co(AcO)2.4H2O (0.5 g), Ni(AcO)2.4H2O (0.5 g), Fe(AcO)2.4H2O (0.5 g), and acetone (15 ml) were added and the components were stirred. Then 20 ml of a 1M aqueous solution of NaOH was added and the pH value was adjusted to about 9. The system was stirred for 10 hours, followed by filtration. The residue was washed several times with water. The solid matter obtained (hydrazone polymer metal complex (D)) was vacuum dried at 65 degrees C. The hydrazone metal complex (D) was mixed with carbon particles (0.10 g). The mixture was placed in a quartz glass tube, hydrogen gas was introduced into the quartz glass tube (250 ml/minute), and the temperature was raised to 360 degrees C at a rate of 6.5 degrees C per minute. The temperature of 360 degrees C was maintained for 2 hours. An acetic acid salt of the hydrazone metal complex (D) was reduced and the metal complex was calcined. The temperature was then lowered to room temperature, the supply of hydrogen gas was stopped, and an anode catalyst (A) was obtained. A fuel cell using the anode catalyst (A) showed good power generation performance, i.e. an open circuit voltage of about 0.58 V and a maximum output density of about 1.4 mW/cm2 (at a current density of 6.4 mA/cm2).