▎ 摘　　要

Nanocomposite of 3D nitrogen rich carbon nitride/reduced graphene oxide (g-C3N4@rGO) hybrid was synthesized by self-assembly of 2D layered g-C3N4 and GOby a single-step hydrothermal reaction. The formation of hybrid g-C3N4@rGO was confirmed through HRTEM and FESEM micrographs; while crystallinity, phases and elemental composition are validated through XRD, Raman, and XPS spectral techniques. The synthesized composite exhibit superior electrochemical performance as an anode material for lithium-ion battery with reversible capacity of 901 mA h g(-1) at 0.1 Crate and 302 mA h g(-1) at 5 Crate. Besides, the ratio of GOto C3N4 is found to significantly influence the performance of electrode. The better Li+ storage seems to originate from the vast interfaces and interactions between the individual components of layered C3N4 and GO, where C3N4 serves as a substrate and spacer for ion movement, while the rGO promotes better Li+ storage and electron mobility during electrode kinetics. The p-p stacking interactions presumably existing between g-C3N4 and rGO helps the electrode to maintain good structural stability during Li-ion storage and provides a continuous network for charge transport throughout the particle and to the current collector.