Microbial electrode and preparation method thereof

The invention relates to the field of microbial fuel cells, in particular to a microbial electrode and a preparation method thereof.The preparation method of the microbial electrode comprises the following steps that a base material obtained after acidification treatment is placed in an aqueous solution containing a coupling agent, phenylboronic acid substances are added, and an activated base material is obtained; and the activated base material is soaked in a glucose solution, and co-culturing the activated base material and electroactive microorganisms to obtain the microbial electrode; the coupling agent is a mixture of 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide and N-hydroxysuccinimide, and the solvent is a mixture of N-hydroxysuccinimide and N-ethyl-3-(3-dimethylaminopropyl) carbodiimide; the phenylboronic acid substance is any one of 3-aminophenylboronic acid or 4-dimethylaminophenylboronic acid; the electroactive microorganisms are any one or two of geobacteria or shewanella. The surface of the pr