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Peer-reviewedCC BYNano-Micro Letters

Entropy-Driven 1D Magnetic Carbon Fibers Embedded into 3D Aerogel Enable Broadband Electromagnetic Wave Absorption

  • Tingting Zhao1,2
  • Shiping Shao1,2
  • Ke Bi3
  • Yunxiang Tang2
  • Lili Wu1,2
  • Jiurong Liu4,5
  • Zhou Wang1,2
  • Fenglong Wang6,7
7 affiliations
  1. 1School of Materials Science and Engineering, Shandong University, Jinan, 250061, People's Republic of China
  2. 2State Key Laboratory of Coatings for Advanced Equipment, Shandong University, Jinan, 250061, People's Republic of China
  3. 3State Key Laboratory of Information Photonics and Optical Communications, School of Science, Beijing University of Posts and Telecommunications, Beijing, 100876, People's Republic of China. [email protected]
  4. 4School of Materials Science and Engineering, Shandong University, Jinan, 250061, People's Republic of China. [email protected]
  5. 5State Key Laboratory of Coatings for Advanced Equipment, Shandong University, Jinan, 250061, People's Republic of China. [email protected]
  6. 6School of Materials Science and Engineering, Shandong University, Jinan, 250061, People's Republic of China. [email protected]
  7. 7State Key Laboratory of Coatings for Advanced Equipment, Shandong University, Jinan, 250061, People's Republic of China. [email protected]
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Abstract

Traditional powder-type electromagnetic absorbers have become inadequate against the intensified radiation across broader frequency ranges, induced by the proliferation of intelligent communication devices. To address this, we present an innovation strategy to assemble spinel ferrites/carbon fibers into a carbon aerogel fabricated via carbonization of a graphene oxide (GO)/2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO)-oxidized cellulose nanofibers (TOCNF) composite aerogel. In the preparation, an entropy-driven design integrated with electrospinning was employed to synthesize the magnetic carbon fibers (MCFs), fully leveraging the complementary advantages of magnetic and carbon materials for optimal impedance matching and attenuation. As a result, the optimized magnetic carbon aerogel (MCA-2), composed of TOCNF, GO, and MCFs, exhibits exceptional broadband electromagnetic wave absorption, with multiple effective reflection loss (RL) peaks (RL ≤ - 10 dB) across the frequency range of 4.8-18 GHz, a minimum RL value of - 54.11 dB, and a maximum effective absorption bandwidth of 7.2 GHz. Additionally, the lightweight MCA-2 aerogel has excellent thermal insulation performance and excellent photothermal performance, which gives it broad application prospects in diverse and harsh environments.

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Cite

BibTeXRIS
BibTeX
@article{zhao2026entropydriven,
  title = {{Entropy-Driven 1D Magnetic Carbon Fibers Embedded into 3D Aerogel Enable Broadband Electromagnetic Wave Absorption}},
  author = {Tingting Zhao and Shiping Shao and Ke Bi and Yunxiang Tang and Lili Wu and Jiurong Liu and Zhou Wang and Fenglong Wang},
  journal = {Nano-Micro Letters},
  year = {2026},
  month = may,
  doi = {10.1007/s40820-026-02212-w},
  url = {https://doi.org/10.1007/s40820-026-02212-w},
  note = {CC BY},
}
RIS
TY  - JOUR
TI  - Entropy-Driven 1D Magnetic Carbon Fibers Embedded into 3D Aerogel Enable Broadband Electromagnetic Wave Absorption
AU  - Tingting Zhao
AU  - Shiping Shao
AU  - Ke Bi
AU  - Yunxiang Tang
AU  - Lili Wu
AU  - Jiurong Liu
AU  - Zhou Wang
AU  - Fenglong Wang
PY  - 2026
DA  - 2026/05/07
JO  - Nano-Micro Letters
DO  - 10.1007/s40820-026-02212-w
UR  - https://doi.org/10.1007/s40820-026-02212-w
AB  - Traditional powder-type electromagnetic absorbers have become inadequate against the intensified radiation across broader frequency ranges, induced by the proliferation of intelligent communication devices. To address this, we present an innovation strategy to assemble spinel ferrites/carbon fibers into a carbon aerogel fabricated via carbonization of a graphene oxide (GO)/2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO)-oxidized cellulose nanofibers (TOCNF) composite aerogel. In the preparation, an entropy-driven design integrated with electrospinning was employed to synthesize the magnetic carbon fibers (MCFs), fully leveraging the complementary advantages of magnetic and carbon materials for optimal impedance matching and attenuation. As a result, the optimized magnetic carbon aerogel (MCA-2), composed of TOCNF, GO, and MCFs, exhibits exceptional broadband electromagnetic wave absorption, with multiple effective reflection loss (RL) peaks (RL ≤ - 10 dB) across the frequency range of 4.8-18 GHz, a minimum RL value of - 54.11 dB, and a maximum effective absorption bandwidth of 7.2 GHz. Additionally, the lightweight MCA-2 aerogel has excellent thermal insulation performance and excellent photothermal performance, which gives it broad application prospects in diverse and harsh environments.
SN  - 2150-5551
SN  - 2311-6706
ER  -