Carbon-polymer composite material, preparation method thereof and bipolar plate material

The invention relates to the technical field of flow batteries, in particular to a carbon-polymer composite material, a preparation method of the carbon-polymer composite material and a bipolar plate material. Based on the total weight of the composite material, the composite material contains 15-55 wt% of a polymer, 40-70 wt% of a conductive additive and 2-15 wt% of a modified additive, wherein the modified additive contains a polycyclic aromatic hydrocarbon mixture, and the carbon atom number of polycyclic aromatic hydrocarbon in the polycyclic aromatic hydrocarbon mixture is C22 to C24; wherein the polymer is selected from at least one of polyvinylidene fluoride, chlorinated polyvinyl chloride, chlorinated polyethylene and ethylene propylene diene monomer. The composite material provided by the invention has high bending strength and high conductivity, and when the composite material is used as a bipolar plate material, the efficiency of a flow battery assembled by a bipolar plate can be improved. 本发明涉及液流电