▎ 摘　　要

NOVELTY - Preparing three-dimensional patterned porous graphene black body involves using short pulse laser to directly irradiate the carbonaceous material. The photon and electron of carbon material are made to interact with each other. The impact ionization and electron-lattice energy transfer are generated. The unit of carbon is gasified to form a cavity. The rest unit forms a network-shaped three dimensional black-like structure. USE - Method for preparing three-dimensional patterned porous graphene black body for use in marine freshwater, catalytic degradation of organic dyes, and supercapacitor (all claimed), for solar energy or spectrum absorption utilization, battery energy, environment treatment and other technical fields, and used in optoelectronics, composite materials, energy storage, energy capture, thermal management, catalysis, and other fields. ADVANTAGE - The method enables to prepare three-dimensional patterned porous graphene black body that has high conductivity, high surface roughness, strong optical absorption and high specific surface area, which obviously improves the spectral absorption conversion capability, energy utilization efficiency, and photo-thermal conversion efficiency. The method enables to utilize short pulse laser to carry out nano-micro structure processing on formed carbon material, interaction between light, electrons and phonons is generated by utilizing interaction between laser and carbon, direct sublimation and gasification of raw materials from wide range of sources is realized, graphene conversion is simultaneously carried out, method has the advantages of no need of catalysts, no toxicity, and no contact, and process is simple and low in cost. The three-dimensional patterned porous graphene black body material prepared by short pulse laser induction has a loose porous structure and three-dimensional nano-microstructure, realizes characteristics of similar black body, obviously increases specific surface area of material, increases conduction path of sunlight inside, and enhances sunlight absorption and light-heat conversion utilization rate. The short-pulse laser induced three-dimensional patterned porous graphene black body is recycled, is green and environment-friendly, and is convenient to store and transport. The laser-induced three-dimensional patterned porous graphene black body has strong adaptability, and processed and prepared based on actual needs. The interaction between short pulse laser and carbon material is utilized to generate action of light, electrons and phonons instead of a hot melting process, and fine nano-micro structure processing is carried out on the surface of the carbon material, so that the graphene black body structure is realized. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a three-dimensional patterned porous graphene black body, which is produced by the method for producing a three-dimensionally patterned porous graphene-like black body.