▎ 摘　　要

NOVELTY - Preparing graphene by electrolytic method comprises e.g. using high-purity graphite plate as anode and cathode, preparing 0.6% diammonium hydrogen phosphate aqueous solution, adding to the electrolytic cell so that the volume of the solution accounts for 80% of the volume of the container, placing high-purity graphite plate into the electrolytic cell as the anode and cathode of the electrolytic cell, adjusting the electrode position so that the electrolyte completely does not pass the graphite electrode plate, connecting high-purity graphite electrode board to the lead wire, and connecting the anode to the positive pole of the 12V DC power, connecting the cathode to the cathode of the 12V DC power supply for electrolytic reaction, peeling off the black graphite flakes from the anode graphite rods onion skin, and grinding with agate mortar into uniform powder with large amount. USE - The method is useful for preparing graphene by electrolytic method. ADVANTAGE - The method: is economical, simple, rapid and convenient for large-scale industrial production. DETAILED DESCRIPTION - Preparing graphene by electrolytic method comprises using high-purity graphite plate as anode and cathode, where one cathode graphite plate and one anode graphite plate constitute an electrolysis, preparing 0.6% diammonium hydrogen phosphate aqueous solution, adding to the electrolytic cell so that the volume of the solution accounts for 80% of the volume of the container, placing high-purity graphite plate into the electrolytic cell as the anode and cathode of the electrolytic cell, adjusting the electrode position so that the electrolyte completely does not pass the graphite electrode plate, connecting high-purity graphite electrode board to the lead wire, and connecting the anode to the positive pole of the 12V DC power, connecting the cathode to the cathode of the 12V DC power supply for electrolytic reaction for 3-5 hours, peeling off the black graphite flakes from the anode graphite rods onion skin, during the entire electrolytic process, constantly generating the bubbles on the graphite rod of the cathode, and the graphite rod of the cathode is not corroded, carrying out reaction to obtain black product, washing with distilled water, removing some large particles of graphite with centrifuge, placing the remaining black powdery solid in dry box at 60 degrees , drying for 6-10 hours, and grinding with agate mortar into uniform powder with large amount.