▎ 摘　　要

NOVELTY - Preparation of graphene-like precursors from biomass, involves Step 1, pulverizing the biomass raw material to a particle size of less than 1 mm, and drying to moisture content of less than 10%, Step 2, putting the biomass and ethanol in a sealed pressure-resistant container with stirring equipment, raising the temperature to 260-310 degrees C, increasing the pressure to 6-20 MPa, and keeping it in this state for 0.5-9 hours, starting the mixing equipment to stir the substance in the container, and Step 3, after cooling, performing filtration and solid-liquid separation to obtain product with the solid conversion rate is 30-63%. USE - Preparation of graphene-like precursors from biomass.