▎ 摘　　要

NOVELTY - Coating composition for application on metal substrates intended for contact with biofuel, comprises a nonvolatile portion and a volatile portion. The nonvolatile portion of the coating composition comprises graphene and/or graphene oxide, a polymer, and optionally an amine based curing agent. USE - The coating composition is useful for application on metal substrates intended for contact with biofuel, where the coating reduces microorganisms present in biofuel and/or corrosion of metal in contact with biofuel, where the microorganisms are selected from sulfate-reducing bacteria, polymer-degrading bacteria, and acid-producing bacteria (claimed); and for biofuel containing containers. ADVANTAGE - The composition either reduces or completely eliminates the use of biocides in the biofuel and provides less negative imprint on the environment and health of humans and animals. Composites including graphene and/or graphene oxides can protect metals against microbial induced corrosion in the biofuel industry. By providing biodiesel storage tanks with a lining of the composition, the interior surfaces of biofuel, such as biodiesel, tanks are protected against microbial corrosion. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for producing a coating composition, which involves providing a graphene powder and/or graphene oxide powder; dispersing the powder in an organic solvent to provide a dispersion; and admixing a polymer and optional curing agent to the dispersion to obtain the coating composition.