▎ 摘　　要

NOVELTY - Preparing graphene dendritic crystal, involves: (a) preparing 1-2 mg/ml solution of graphene oxide; (2) placing the solution in an electric graphite oxide reaction vessel, where the electrode spacing is 10-100 mm; and (3) generating signal in an electrochemical reactor for a square wave electrical signal to adjust the magnitude of the voltage square with wave electrical signal of -100 V to 100 V, near electrodes such that a serious lack of graphene oxide particles, the particles reach plane portion, while other part plane been passivated such as graphene dendrite. USE - For the preparation of graphene dendritic crystal (claimed). ADVANTAGE - The method prepares graphene dendrite having excellent electrical and mechanical properties. The method does not involve toxic chemicals, avoids damage to the equipment, environmental pollution and physical hazards. The device is simple, provides low cost raw materials, is easy to operate, and has good reproducibility and applicability. DETAILED DESCRIPTION - Preparing graphene dendrites, involves: (a) preparing 1-2 mg/ml solution of graphene oxide; (2) placing the solution in an electric graphite oxide reaction vessel, where the electrode spacing is 10-100 mm; and (3) generating signal in an electrochemical reactor for a square wave electrical signal to adjust the magnitude of the voltage square with wave electrical signal of -100 V to 100 V, the reaction time is 1-2 minutes, frequency is 0.01-0.5 Hz, near the electrodes such that a serious lack of graphene oxide particles, the particles reach plane portion, while other part plane been passivated, such as a shape of sedimentary layers, namely graphene dendrite.