▎ 摘　　要

NOVELTY - Preparing a composite anode material involves adding 0.01 mol of aniline to 20 ml of toluene, and stirring in an ice-water bath for 20 minutes, adding 2 g of polyvinyl alcohol aqueous solution of 10% into 90 ml of 1 mol/L hydrochloric acid solution. The hydrochloric acid solution containing polyvinyl alcohol and the toluene solution containing aniline are vigorously stirred and mixed, and dissolved 0.01 mol of ammonium persulfate in 10 ml of water, added dropwise to the above mixed solution, and kept for reaction. The reaction product is rinsed with deionized water and absolute ethanol, suction filtered, and dried to obtain polyaniline. The 0.06 g of graphene oxide mixed with a certain amount of polyaniline, added 20 ml of water, and ultrasonically dispersed uniformly. A certain amount of ascorbic acid is added and stirred uniformly, and then reduced the reaction at 90℃ for a certain period of time. USE - Method for preparing a composite anode material for a biocompatible microbial fuel cell (claimed). ADVANTAGE - The method uses wide source, green, good biological compatibility of sodium alginate as substrate, improving the composite anode material electrochemical performance, at the same time, good for adsorption and growth of the microorganism, and can be widely applied to preparing microbial fuel cell anode. DETAILED DESCRIPTION - Preparing a composite anode material involves adding 0.01 mol of aniline to 20 ml of toluene, and stirring in an ice-water bath for 20 minutes, adding 2 g of polyvinyl alcohol aqueous solution of 10% into 90 ml of 1 mol/L hydrochloric acid solution. The hydrochloric acid solution containing polyvinyl alcohol and the toluene solution containing aniline are vigorously stirred and mixed, and dissolved 0.01 mol of ammonium persulfate in 10 ml of water, added dropwise to the above mixed solution, and kept for reaction. The reaction product is rinsed with deionized water and absolute ethanol, suction filtered, and dried to obtain polyaniline. The 0.06 g of graphene oxide mixed with a certain amount of polyaniline, added 20 ml of water, and ultrasonically dispersed uniformly. A certain amount of ascorbic acid is added and stirred uniformly, and then reduced the reaction at 90℃ for a certain period of time. The reaction is finished, the product is taken out, vacuum-dried and ground into powder to obtain a polyaniline/reduced graphene oxide composite material. The 0.6 g of sodium alginate and 0.3-0.5 g of agar added to 10 ml of water to dissolve completely, and then added the agar solution to the sodium alginate solution, then added prepared polyaniline/reduced graphene oxide composite material. The nickel foam is immersed to uniformly coat the film, and after cooling, immersed in a calcium chloride solution for cross-linking to obtain the biocompatible microbial fuel cell composite anode material.