▎ 摘　　要

NOVELTY - Biomass graphene hydrogen storage material comprises agricultural and forestry wastes as raw materials, where the processes of pulverization, carbonization, peeling, and defunctionalization are carried out in sequence to obtain low-layer biomass graphene with excellent hydrogen storage performance. USE - Biomass graphene hydrogen storage material. ADVANTAGE - The biomass graphene hydrogen storage material is easy to use, cost-effective, has good application prospect and realizes large-scale mass production. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing a biomass graphene hydrogen storage material, which involves: (A) mechanically crushing the raw materials of agricultural and forestry waste into granules with the particle size controlled in the range of 20-80 mesh; (B) placing crushed raw material particles into a tube furnace for carbonization, where the tube furnace heating rate is controlled at 5-30 degrees C/minutes, the temperature is increased to 300-750 degrees C, and the temperature is kept for 1-8 hours to obtain the carbonized product; (C) adding 1-60 mL of mixed acid in 100mL of water, stirring to prepare stripping liquid A; and (D) adding 1-50g of the carbonized product to the stripping solution A and soaking for 0.5 hours, and then sonicating at room temperature for 2-20 hours, filtering out the solid matter, and rinsing the filter with water, soaking the cleaned filtrate into 100 mL of water, sonicating at 5-60 degrees C for 1-20 hours, then filtering, placing the filtered solid matter into an oven, and drying at 60-100 degrees C for 0.5-4 hours to obtain graphene hydrogen storage material.