▎ 摘　　要

NOVELTY - Preparing carbon-based/elemental metal/boron nitride core-shell structure microwave absorbing material involves weighing the carbon-based material, the metal source, the boron-containing material and the nitrogen-containing material, then adding them to the ball milling jar in turn, adding the solvent, sealing and ball-milling to obtain the reaction precursor. The obtained reaction precursor is dried and then sintered at 800-1400℃ for 1-6 hours to obtain product. USE - Method for preparing carbon-based/elemental metal/boron nitride core-shell structure microwave absorbing material. ADVANTAGE - The method produces product which has good wave absorbing performance and better wave absorbing performance when the thickness is small, improves impedance matching, increases interface polarization and relaxation effect of the material and effective absorption bandwidth, reduces the reflection loss value.