Sustainable CoFe-Doped Biomass Carbon Aerogels for Ultra-Broadband Electromagnetic Absorption and Thermal Management

The synergistic coupling mechanism between magnetic and dielectric losses is widely recognized as a key design strategy for realizing efficient microwave attenuation composites. In this work, a carbon-based magnetic aerogel was successfully prepared using eggplant as a carbon source, realizing the interaction between magnetism and dielectric dissipation and developing a low-cost and environmentally friendly multifunctional material. The electromagnetic microwave absorption (EMA) characteristics were precisely tuned by varying the metal ion concentration ratio. Notably, the bimetallic ion-doped carbon aerogel has excellent EMA properties, with an EABmax of 6.32 GHz and RLmin value of −65.8 dB, under the…

• NN
  National Natural Science Foundation of China

  Award: 52202047
• SK
  State Key Laboratory of Geohazard Prevention and Geoenvironment Protection

  Award: SKLGP2022Z019
• SP
  Sichuan Province Science and Technology Support Program

  Award: 2025ZNSFSC1387