articleAdvanced Functional MaterialsFeb 13, 2024Closed access

Shape Anisotropic Chain‐Like CoNi/Polydimethylsiloxane Composite Films with Excellent Low‐Frequency Microwave Absorption and High Thermal Conductivity

Northwestern Polytechnical University · South China University of Technology

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Abstract

Abstract The demand for low‐frequency microwave absorption materials is becoming more and more urgent. Novel shape anisotropy chain‐like CoNi is fabricated using polyvinylpyrrolidone as a shape‐directing agent via solvothermal method, which is then mixed with polydimethylsiloxane (PDMS) to prepare corresponding multifunctional chain‐like CoNi/PDMS composite films. Shape anisotropy and strong magnetic coupling effect of chain‐like CoNi enhance natural resonance and magnetic loss capability. The minimum reflection loss (RL min ) is −50.5 dB and low‐frequency effective absorption bandwidth (EAB) is 1.04 GHz (2.64–3.68 GHz) at 3.9 mm for chain‐like CoNi. The corresponding 18 vol% chain‐like CoNi/PDMS composite…

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349
total citations
FWCI
37.55
Percentile
100%
References
51
Citations per year

Authors

8

Topics & keywords

Keywords
  • Materials science
  • Polydimethylsiloxane
  • Reflection loss
  • Composite number
  • Microwave
  • Anisotropy
  • Absorption (acoustics)
  • Thermal conductivity
UN Sustainable Development Goals
  • Affordable and clean energy
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