▎ 摘　　要

Rechargeable magnesium battery with a magnesium anode and magnesium-graphene (Mg-G) composite coated on SS mesh as cathode and ionic liquid electrolyte was developed. Magnesium-graphene composite was prepared by using the semi-metallurgy method. The composite was analyzed by field emission scanning electron microscopy, Fourier transform infrared spectroscopy, Raman spectroscopy, and X-ray diffraction studies. The electrochemical performance of magnesium-graphene composite was analyzed by cyclic voltammetry, impedance spectroscopy, and charge-discharge studies. The cyclic voltammetry of Mg-G cell showed good reversibility, and impedance spectra revealed reduced resistance of the cell. The cell-specific capacity was 55 mAh g(-1), and average discharge voltage was 1.15 V at 0.1 mA cm(-2) constant current. The cell showed good cycle life (80 cycles) indicating stable discharge capacity and electrochemical behavior.