▎ 摘　　要

NOVELTY - Composite material comprises a polyamide-imide, and nanoplatelets. USE - The material is useful for an electronic device, preferably a galvanic cell, a supercapacitor, or a fuel cell (all claimed). ADVANTAGE - The material has excellent adhesiveness to metals and other substrates and corrosion resistance, has high conductivity, and improves longevity of energy storage device. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) a method of providing an anti-corrosion conductive coating on a substrate involving dispersing nanoplatelets in a liquid including water to form an aqueous dispersion of nanoplatelets, dissolving a polyamide-imide precursor in at least water to form an aqueous solution, blending the aqueous dispersion of nanoplatelets with the aqueous solution, coating the substrate with the blended mixture, drying and curing the coating by applying heat by vacuum or convection oven, or curing the coating on substrates not compatible with high temperatures (such as PET) by localised infrared or xenon flash lamp curing; and (2) an energy storage device comprising an electrolyte, and electrodes and/or current collectors, in which at least one of the electrodes/current collectors is coated with a polyamide-imide coating containing graphene nanoplatelets, the electrode/current collector is in electrical contact with the polyamide-imide coating, and the polyamide-imide coating is in electrical contact with the electrolyte.