▎ 摘　　要

NOVELTY - Synthesis of graphene/trimanganese tetraoxide composite nano-lubricant additive comprises mixing graphite with high-quality ratio of concentrated sulfuric acid and potassium permanganate, performing oxidation reaction, adding hydrogen peroxide to restore unreacted potassium permanganate, diluting with water, and sonicating to obtain graphene oxide mixture; and adjusting pH to alkaline, reacting with trimanganese tetraoxide, evaporating or filtering to obtain solid product, and subjecting to reduction treatment at high temperature. USE - Method for synthesis of graphene/trimanganese tetraoxide composite nano-lubricant additive. ADVANTAGE - The method is simple. The product has excellent dispersibility and lubricity.