▎ 摘　　要

NOVELTY - A composite material comprises activated carbon particles, layer (L1) comprising graphene-based material arranged on activated carbon particle(s), and layer (L2) comprising pseudocapacitive material arranged on layer (L1). USE - Composite material is used in electrode (claimed) for supercapacitors, lithium batteries, biosensors and gas sensors and used in manufacture of transparent or semi-transparent film electrodes in solar energy conversion devices, and substrate for surface enhanced resonance spectroscopy (SERS). Uses include but are not limited to hybrid electrochemical device, rechargeable battery, metal-air battery, consumer electronics, energy storage at intermittent generators e.g. smart grid, solar panels and windmills, and large scale transportation systems such as electric rail rack and hybrid bus. ADVANTAGE - The composite material has excellent capacitance value, conductivity, rate performance, wettability, improved pseudocapacitive charge storage property, and forms uniform coating. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of composite material. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic process flow for production of activated carbon/Nfh-modified graphene/conducting polymer.