▎ 摘　　要

NOVELTY - Preparation of graphene powder by liquid phase discharge technique involves filling with flake graphite suspension, ultrasonically dispersing into discharge cavity, dispersing crystalline flake graphite powder, and sealing discharge cavity in suspension; adjusting discharge cavity in two of electrodes; discharging, adjusting liquid phase, charging and discharging energy at 5-22.5 kJ, and triggering liquid phase discharge; and discharging, transferring liquid discharging cavity into clean container, settling down for 6-12 hours, removing precipitate in container, filtering, and drying at 40 degrees C. USE - Method for preparing graphene powder by liquid phase discharge technique (claimed). ADVANTAGE - The method has short reaction time, good crystallinity, low production cost, and simple technique process and structure. DETAILED DESCRIPTION - Preparation of graphene powder by liquid phase discharge technique comprises filling with flake graphite suspension, ultrasonically dispersing into discharge cavity, dispersing crystalline flake graphite powder, and sealing discharge cavity in suspension; adjusting discharge cavity in two of electrodes; discharging, adjusting liquid phase, charging and discharging energy at 5-22.5 kJ, and triggering liquid phase discharge; discharging, transferring liquid discharging cavity into clean container, settling down for 6-12 hours, removing precipitate in container, filtering, and drying at 40 degrees C to obtain graphene powder; and discharging electrode.