▎ 摘　　要

NOVELTY - A chitosan-graphene oxide sponge is prepared by adding 2-8 mg/mL graphite oxide suspension into ultrasonic cleaner, ultrasonically processing to obtain graphene oxide solution, taking 80-150 mL graphene oxide solution, dripping 2-6 mL glacial acetic acid, uniformly mixing to obtain mixed solution, dropwise adding 0.1-50 mL of 0.08-0.12 mol/L iron(II) chloride solution, gradually adding 2-10 mL of 0.8-1.2 mol/L sodium benzenesulfinic acid solution, adding 2-10 g chitosan. USE - Method for preparing chitosan-graphene oxide sponge used as anode in breathable type microorganism fuel cell assembly (claimed). ADVANTAGE - The method is simple and has low cost. The sponge has conductivity, biocompatibility, good elasticity, abundant gap structure, large specific surface area, more active sites and easily attached microorganism, prevents sponge degradation by microorganism, and forms ferroferric oxide. DETAILED DESCRIPTION - A chitosan-graphene oxide sponge is prepared by adding 2-8 mg/mL graphite oxide suspension into ultrasonic cleaner, ultrasonically processing to obtain graphene oxide solution, taking 80-150 mL graphene oxide solution, dripping 2-6 mL glacial acetic acid, uniformly mixing to obtain mixed solution, dropwise adding 0.1-50 mL of 0.08-0.12 mol/L iron(II) chloride solution, gradually adding 2-10 mL of 0.8-1.2 mol/L sodium benzenesulfinic acid solution, adding 2-10 g chitosan, uniformly stirring, vacuumizing, removing bubbles to obtain bubble-free slurry, injecting into mold, putting in freeze-dryer, freeze-drying, soaking sample in sodium hydroxide solution to obtain sponge, thermostatic heating, and washing with distilled water. An INDEPENDENT CLAIM is included for application method of chitosan-graphene oxide sponge comprising dissolving chitosan-graphene oxide sponge into microorganism fuel cell in anode chamber, fixing carbon paper material on cathode chamber electrode bracket, separating breathable type microorganism fuel cell cathode chamber and anode chamber by proton exchange membrane, injecting cathode chamber with 100 mL of 0.05 mol/L potassium ferricyanide solution, injecting 50 mL high concentration anaerobic sewage into anode chamber, inoculating electrogenesis microbe, and injecting 50 mL of 0.5 g/L sodium acetate nutrient solution into anode chamber.