▎ 摘　　要

NOVELTY - Producing high concentration graphene dispersion, comprises (a) preparing a feed solution by mixing graphite, polyvinylpyrrolidone and water, and (b) passing the prepared feed solution into a high pressure homogenizer having an inlet, an outlet, and a microchannel having a diameter in micrometer scale, connecting the inlet and the outlet. USE - The method is useful for producing high concentration graphene dispersion (claimed). ADVANTAGE - The method improves dispersion stability, and is simple.