▎ 摘　　要

NOVELTY - Preparing graphene microchips involves performing one-step electrolysis using molten carbonate, tableting graphite powder, pressing graphite powder (purity is 99.9%, particle size is 50-300 mesh) into graphite disk (pressure 30-50 megapascal, holding pressure is 5-10 minutes) with tabletting tool, graphite disk is 5-10 cm in diameter and 10-20mm in thickness, coating with conductive adhesive on one side, and connecting with silver wires as electrodes. The three alkali metal carbonates are mixed in proportion, ratio of lithium, sodium, potassium is 12:25:67, mixed and ground by ball milling for 2 hours, and it becomes molten in 2 hours at 500-600 degrees C, then naturally cooled, and then ground and crushed into powder, which is used as ternary molten carbonate electrolyte for backup. The 500-1500 ml ceramic crucible is peeled off from high-temperature electrolytic intercalation. USE - Method for preparing graphene microchips. ADVANTAGE - The method enables to prepare graphene microchips that is simple and easy to operate, suitable for industrial large-scale use and has low cost. DETAILED DESCRIPTION - Preparing graphene microchips involves performing one-step electrolysis using molten carbonate, tableting graphite powder, pressing graphite powder (purity is 99.9%, particle size is 50-300 mesh) into graphite disk (pressure 30-50 megapascal, holding pressure is 5-10 minutes) with tabletting tool, graphite disk is 5-10 cm in diameter and 10-20mm in thickness, coating with conductive adhesive on one side, and connecting with silver wires as electrodes. The three alkali metal carbonates are mixed in proportion, ratio of lithium, sodium, potassium is 12:25:67, mixed and ground by ball milling for 2 hours, and it becomes molten in 2 hours at 500-600 degrees C, then naturally cooled, and then ground and crushed into powder, which is used as ternary molten carbonate electrolyte for backup. The 500-1500 ml ceramic crucible is peeled off from high-temperature electrolytic intercalation. The graphite disk is buried in ternary carbonate and placed in experimental electric furnace at 450 degrees C, melted, insert silver sheet as negative electrode, connected to programmable precision DC power supply, and adjust current and voltage from 5.0-20.0 volt to achieve graphite sheet positive oxidation and intercalation peeling to generate graphene microchips. The carbonate and graphene microchip mixture obtained is added to water and placed in ultrasonic cleaning machine, heated to 60-80 degrees C, dissolved with dilute acid ultrasonically, and then centrifuged or separated by filtration method, removed large particles, and retained graphene microchips, and finally filtered to obtain wet material. The wet material of product obtained is placed into 80 degrees C vacuum drying box or freeze dryer and dried for 12 hours to obtain graphene microchip powder product.