▎ 摘　　要

NOVELTY - Preparing highly conductive ink comprises mixing graphene powder with water, dispersing and peeling by a homogenizer, obtaining the aqueous dispersion of the graphite, concentrating, preparing the first concentrated slurry with mass content of 5-15% graphite; adding water-miscible organic solvent to the first concentrated slurry, mixing, evaporating part of water and part and water soluble, organic solvent the quality content of the graphite concentrated slurry is more than 50%, adding the remaining raw material to the second concentrated slurry, mixing, and preparing the high-conductivity ink for the alkenyl RFID graphite tag; where the raw materials of the ink include a conductive agent, a resin matrix and a solvent, and the conductive agent is a graphene powder and/or other conductive agent, and solvent comprises water and an organic solvent miscible with water. USE - The method is useful for preparing highly conductive ink, which is useful for a graphene-based radio-frequency identification (RFID) electronic tag or RFID antenna. ADVANTAGE - The method prepares conductive ink with a high content of graphene and good dispersity, greatly reduces the amount of the organic solvent, reduces the amount of precious metal while ensuring specific conductive performance, and prepares RFID antenna by means of printing. DETAILED DESCRIPTION - Preparing highly conductive ink comprises mixing graphene powder with water, dispersing peeling a homogenizer, obtaining the aqueous dispersion of the graphite, concentrating, preparing the first concentrated slurry with mass content of 5-15% graphite; adding water-miscible organic solvent to the first concentrated slurry, mixing, evaporating part of water and part and water soluble, organic solvent the quality content of the graphite concentrated slurry is more than 50%, adding the remaining raw material to the second concentrated slurry, mixing, and preparing the high-conductivity ink for the alkenyl RFID graphite tag; where the raw materials of the ink include a conductive agent, a resin matrix and a solvent, and the conductive agent is a graphene powder and/or other conductive agent. The solvent comprises water and an organic solvent miscible with water, the mass ratio of the conductive agent to the water is 1:45-55, and the D50 of the graphene powder is 5-10 mu m. When the conductive agent is a combination of graphene powder and other conductive agents. The mass ratio of the other conductive agent to the graphene powder is 0.05-0.5:1. The other conductive agent is Ketjen black (RTM: Electrically conductive carbon black), carbon nanowire, carbon nanotube and/or silver paste. The mass ratio of the first concentrated slurry to the water-miscible organic solvent is 1:1-5. The mass ratio of the second concentrated slurry to the resin matrix is 100:50-70. INDEPENDENT CLAIMS are also included for: (1) a high-conductivity ink for graphene-based RFID electronic tag; and (2) an RFID electronic tag comprising an RFID antenna, where the RFID antenna is made by printing the graphene-based RFID electronic tag with high-conductivity ink.