Negative plate, electrocatalytic oxidation device and manufacturing method of negative plate

The invention relates to the field of electro-catalytic wastewater treatment, and discloses a cathode plate, an electro-catalytic oxidation device and a manufacturing method of the cathode plate, the cathode plate comprises a metal net and a biomass charcoal layer which are alternately stacked, and the biomass charcoal layer is at least distributed on a stacking outer layer so as to cover a stacking surface of the metal net. The cathode plate can be used as a cathode to construct an electro-catalytic degradation system, the surface of the cathode plate is provided with a multistage pore structure and rich oxygen-containing functional groups, a large amount of H2O2 can be generated on the surface of an electrode, the cathode pollution phenomenon can be effectively inhibited, scaling is prevented, meanwhile, the generated H2O2 can catalyze and generate hydroxyl radicals on the surface of an anode, and the electrochemical performance of the cathode plate is improved. Therefore, degradation of pollutants is furth