▎ 摘　　要

NOVELTY - Graphene modified porous nickel cathode reduction of carbon dioxide in microbial fuel cell comprises impregnating porous nickel sheet in oxidized graphene dispersion liquid, ultrasonically processing, drying, placing in excess hydrazine hydrate solution, drying to obtain graphene-modified porous nickel, taking a dual chamber microbial fuel cell, using carbon material loaded with electricity producing strain as an anode, and porous nickel modified by graphene as cathode, introducing carbon dioxide or nitrogen, where carbon dioxide gas partially convert into bicarbonate ions in cathode solution. USE - The method is useful for graphene modified porous nickel cathode reduction of carbon dioxide in microbial fuel battery (claimed). ADVANTAGE - The method uses carbon dioxide to reduce the reaction to improve the reduction product formation rate and production; uses graphene modified porous nickel electrode, which enhances transmission electron capacity to increase system productivity and product conversion rate. DETAILED DESCRIPTION - Graphene modified porous nickel cathode reduction of carbon dioxide in microbial fuel battery comprises impregnating porous nickel sheet in 0.5-2 g/l oxidized graphene dispersion liquid, ultrasonically processing, allowing to stand, drying, placing the porous nickel sheet in excess hydrazine hydrate solution, placing in an autoclave, heating to 100-150 degrees C for not less than 8 hours, washing with deionized water and drying to obtain graphene-modified porous nickel, taking a dual chamber microbial fuel cell, anode chamber and cathode chambers being separated by an ion exchange membrane, using carbon material loaded with electricity producing strain as an anode, external resistance and porous nickel modified by graphene was used as cathode, forming a closed loop, anode liquid using simulation sewage, cathode liquid using 0.3-0.5 M potassium bicarbonate solution, adding 0.1-0.5 M electrolyte, anode anaerobic, aerating the cathode at a rate of 0.01-0.1 m3/hour, introducing carbon dioxide or nitrogen, while adding carbon dioxide gas partially converting into bicarbonate ions in the cathode solution and some part is reduced to carbon monoxide, reduction of cathode liquid hydrogen by alcohol, forming acetone as by-product, when passing nitrogen, cathode liquid and bicarbonate are reduced by alcohol and acetone produced as by-products.