▎ 摘　　要

We have used graphene quantum dots (GQDs), silicon nanoparticles (SiNPs) and carbon nanomaterials to synthesize GQD/SiNP/carbon nanofibers (CNFs) and GQD/SiNP/carbon nanotubes (CNTs) composites, which can improve the low charging capacity of carbon materials. To fabricate these composites, we positively charged SiNPs by adding poly(diallyldimethylammonium chloride) (PolyDADMAC). Subsequently, we combined positively charged SiNPs with hydroxyl-attached GQDs (OH-GQDs) using electrostatic attraction followed by mixing and dispersing GQD/SiNP nanocomposites with CNFs or CNTs, respectively. Then, they were reduced through annealing under Ar/H-2 gases. The obtained OH-GQDs had a diameter of 5.75 nm on average, a standard deviation of 0.74, and a lattice spacing of 0.21 nm. The manufactured materials were characterized with Scanning Electron Microscopy (SEM)/Energy Dispersive Spectroscopy (EDS), Transmission Electron Microscopy (TEM), Fourier Transform Infrared Spectroscopy (FT-IR), X-ray Diffraction (XRD), X-ray Photoelectron Spectroscopy (XPS), and Raman Spectroscopy to investigate their physical properties. We expect that these composites can be applied as various devices such as Li ion batteries, semiconductor, display, bio kit, and image sensors, by complementing each component deficiencies.