▎ 摘　　要

NOVELTY - Device comprises a container (1), a metal wire (2), a conductive plate (4), weak acid electrolyte (5), a power supply (6), expanded graphite worm and multiple metal wires. The conductive plate is embedded at the bottom of the container. The container is filled with electrolyte and mixed liquid of expanded graphite worm. The inner surface of metal wire fixed plate is vertically welded with many metal wires. The ultrasonic vibrator is set on the metal wire fixing plate. The anode of the power supply is connected through lead and the wire fixing plate. USE - The device is useful for preparing graphene by using electrolysis and ultrasonic wave (claimed). ADVANTAGE - The method is simple. DETAILED DESCRIPTION - Device comprises a container, a metal wire, a conductive plate, weak acid electrolyte, a power supply, expanded graphite worm and multiple metal wires. The conductive plate is embedded at the bottom of the container. The container is filled with electrolyte and mixed liquid of expanded graphite worm. The inner surface of metal wire fixed plate is vertically welded with many metal wires. The ultrasonic vibrator is set on the metal wire fixing plate. The anode of the power supply is connected through lead and the wire fixing plate. The cathode of the power supply is connected through lead and the conductive plate. An INDEPENDENT CLAIM is also included for preparing graphene by using electrolysis and ultrasonic wave comprising taking conductive plate is embedded in the bottom of the reaction vessel, where the weak electrolyte is filled with reaction vessel, adding expanded graphite worms and fixing the metal wire and set above the reaction vessel, where the ultrasonic vibrator is set on the metal wire fixing plate, where the anode of the power supply is connected through lead and the wire fixing plate, where the cathode of the power supply is connected through lead and the conductive plate, turning on the power switching the expanded graphite worm for electrolyze, taking the mixture of graphene and electrolyte after washing and filtering, drying the obtained graphene. DESCRIPTION OF DRAWING(S) - The figure shows a schematic representation of the device. Container (1) Metal wire (2) Conductive plate (4) Weak acid electrolyte (5) Power supply (6)