1881 results about "Glassy carbon electrode" patented technology

The invention discloses a preparation method of a doped polyaniline directly-carbonized composite electrocatalyst. The preparation method comprises the following steps: (1) in the process of polymerizing phenylamine to form the polyaniline, doping metal iron or cobalt salt, and subsequently carrying out carbonization treatment at a certain temperature so as to obtain a doped polyaniline carbonized product; (2) treating the doped doped polyaniline carbonized product by using sulfuric acid, and continuously carrying out the secondary thermal treatment at the high temperature so as to obtain a transit metal doped C-N compound electrocatalyst; and (3) adding the compound electrocatalyst into absolute ethyl alcohol and a Nafion solution, carrying out ultrasonic dispersion, and forming into paste and adhering to the surface of a glassy carbon electrode so as to prepare a corresponding transit metal doped C-N compound electrocatalyst electrode. The electrocatalytic activity of the doped polyaniline carbonized compound to the oxygen reduction reaction is tested respectively in acid and alkali solutions. The C-N transit metal doped compound electrocatalyst has strong electrocatalytic activity to the oxygen reduction reaction, is simple in preparation method, wide in material resource and low in cost, and is widely used in fuel cells.