▎ 摘　　要

NOVELTY - Preparing microwave absorbing material comprises (i) adding polyvinyl alcohol to water to obtain polyvinyl alcohol solution, adding graphene-ferric acid cobalt, multi-wall carbon nanotubes and polyvinylpyrrolidone to water and dispersing to obtain dispersion, (ii) adding the polyvinyl alcohol solution prepared in the step (i) to the dispersion, continuing to disperse and allowing to stand to obtain mixed solution, (iii) subjecting obtained the mixed solution to a refrigeration cycle to be thawed to obtain thawing mixture, and (iv) freeze-drying the obtained thawing mixture. USE - The method is useful for preparing microwave absorbing material. ADVANTAGE - The microwave absorbing material: has absorption frequency bandwidth of less than 10 dB reflection loss at 8.8-12.4 GHz, excellent absorbing performance in the X-band, cell structure, light weight and low interface reflection. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for microwave absorbing material is prepared by the above mentioned method, where the microwave absorbing material has a cell structure.