METHOD FOR MANUFACTURING HIGHLY PORE ELECTRODE OF MICROBIAL BIOFUEL ELEMENT Russian patent published in 2023 - IPC H01M8/16 H01M4/88 B82Y30/00 

FIELD: electrical engineering.

SUBSTANCE: method for manufacturing a highly porous electrode of a microbial biofuel cell. An increase in the specific surface area, mechanical strength and electrical conductivity of the electrode is achieved by preparing a suspension of chitosan with a concentration of 1-2% by weight, to which graphene oxide or carbon nanotubes are added in an amount of 1-5% by polymer weight, or carbon black in the amount of 1-20% by weight of polymer, followed by stirring, add a solution of glutaraldehyde in the amount of 0.5-1.5% by weight of polymer, followed by stirring for 3-5 minutes at a speed of 100 rpm, after which the resulting suspension is frozen in liquid nitrogen until completely frozen, dried in a freeze-drying chamber at a pressure of 0.220 bar for 48 hours with a decrease in pressure to 0.010 mbar and drying for 2 hours. The resulting composite material has a pore size of 15-200 mcm, a specific surface area of 5-8 m²/g, Young's modulus of 0.9-3.5 MPa, electrical conductivity of 0.01-0.5 mS.

EFFECT: efficiency of the electrode used for immobilization of microorganism cells on it.

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