METHOD OF PRODUCING NANOSTRUCTURED COBALT OXIDE ON CARBON SUPPORT Russian patent published in 2020 - IPC C01G51/04 C25B1/00 B82Y30/00 C01B32/00 H01M4/133 H01M4/52 

FIELD: electricity.

SUBSTANCE: invention can be used for preparing an active mass of an electrode with cobalt oxide particles on a carbon support, used in chemical current sources, supercondensers, as a catalyst support for reactions occurring in fuel cells. Obtaining nanostructured cobalt oxide CoO on a carbon support is carried out in an electrochemical cell with a combined cathode and anode space filled with aqueous electrolyte under action of direct current. A metal layer of the carbon suspension with the following composition, wt%, is placed on the metal cathode in the form of a plate located at the bottom of the electrochemical cell: N-methylpyrrolidone – 73, polyvinylidene fluoride – 2.6, carbon – 24.4. Water solution of electrolyte having composition is poured onto obtained layer of carbon suspension CoSO₄·7H₂O 100–500 g/l, NaCl 20 g/l, H₃BO₃ 45 g/l or CoSO₄ 100–500 g/l, NaCl 20 g/l, H₃BO₃ 45 g/l. Electrodeposition of cobalt on carbon carrier is carried out at density of current of 0.5–1.6 A/cm² relative to area of metal cathode at mixing of carbon suspension by means of magnetic mixer.

EFFECT: invention enables to obtain cobalt oxide particles on a carbon support with crystallite size of 2–50 nm with uniform distribution over the surface of the carbon support.

3 cl, 3 dwg, 2 tbl, 10 ex