▎ 摘　　要

NOVELTY - Synthesis of nanoparticle/porous graphene composite involves dispersing porous graphene structures in a solvent to form a dispersion, adding precursors of nanoparticles into the dispersion to form a precursor mixture, and treating the precursor mixture to form the composite. The nanoparticles are uniformly distributed in pores of the graphene structures. USE - Preparation of nanoparticles/porous graphene composite used for electrode in batteries and supercapacitors (all claimed). ADVANTAGE - The graphene nanocomposite obtained has excellent electrochemical properties and provides efficient ion and electron transport in lithium-ion batteries and supercapacitors. The composite obtained has a uniform structure as the nanoparticles are uniformly distributed in the fibers. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view explaining the procedure to load active LTO nanoparticles onto nitrogen-doped mesoporous graphene fibers to prepare the nanocomposites.