▎ 摘　　要

Graphene supported boron nitride (G/BN) nanosheets were prepared via vacuum filtration process and followed by thermal treatment at 150 degrees C for 2 h in an argon atmosphere. The structural analysis of G/BN materials were conducted through field emission scanning electron microscopy, energy-dispersive X-ray spectroscopy, X-ray diffraction, X-ray photoelectron spectroscopy, FT-IR spectroscopy. The structural analysis was clearly illustrated that the prepared BN nanosheets were supported on the graphene layer. It is confirmed that the G/BN-20% content shown round leaf-like morphology and particle size approximately 100 nm. Further, the electroanalytical performance of G/BN materials was measured by galvanostatic charge/discharge, cyclic voltammetry, and electrochemical impedance spectroscopy studies. It was observed that the G/BN-20% material was exhibited with a good discharge capacity (105 mAh g(-1)) at the current density of 25 mA g(-1), which is higher capacity retention and rate capability at around 100 cycles. Due to the exceptional magnesium storage behaviour of G/BN-20% material which is used as a cathode, has shown a strong synergistic effect.