Advances and mechanisms in polymer composites toward thermal conduction and electromagnetic wave absorption

Science Bulletin, Journal Year: 2023, Volume and Issue: 68(11), P. 1195 - 1212

Published: May 2, 2023

Language: Английский

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Fabrication of core-shell structure NiFe2O4@SiO2 decorated nitrogen-doped graphene composite aerogels towards excellent electromagnetic absorption in the Ku band

Carbon, Journal Year: 2023, Volume and Issue: 210, P. 118047 - 118047

Published: April 21, 2023

Language: Английский

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Synthesis of CuCo2S4@Expanded Graphite with crystal/amorphous heterointerface and defects for electromagnetic wave absorption

Nature Communications, Journal Year: 2023, Volume and Issue: 14(1)

Published: Sept. 23, 2023

The remarkable advantages of heterointerface and defect engineering their unique electromagnetic characteristics inject infinite vitality into the design advanced carbon-matrix wave absorbers. However, understanding interface dipole effects based on microscopic macroscopic perspectives, rather than semi-empirical rules, can facilitate heterointerfaces defects to adjust impedance matching absorption material, which is currently lacking. Herein, CuCo2S4@Expanded Graphite heterostructure with multiple cation are reported, morphology, interfaces component regulated by varying concentration metal ions. results show that 3D flower-honeycomb crystal-crystal/amorphous abundant effectively conductive polarization losses, achieve balance carbon materials, improve wave. For sample CEG-6, effective Ku band RLmin -72.28 dB bandwidth 4.14 GHz realized at 1.4 mm, while filler loading only 7.0 wt. %. This article reports establishment potential relationship between heterointerfaces, defects, materials.

Language: Английский

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Synthesis of nitrogen-doped reduced graphene oxide/magnesium ferrite/polyaniline composite aerogel as a lightweight, broadband and efficient microwave absorber

Journal of Material Science and Technology, Journal Year: 2023, Volume and Issue: 175, P. 115 - 124

Published: Sept. 11, 2023

Language: Английский

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Core–shell Ni3Sn2@C particles anchored on 3D N-doped porous carbon skeleton for modulated electromagnetic wave absorption

Journal of Material Science and Technology, Journal Year: 2023, Volume and Issue: 158, P. 242 - 252

Published: March 29, 2023

Language: Английский

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Construction of dual heterogeneous interface between zigzag-like Mo–MXene nanofibers and small CoNi@NC nanoparticles for electromagnetic wave absorption

Journal of Advanced Ceramics, Journal Year: 2023, Volume and Issue: 12(8), P. 1562 - 1576

Published: May 24, 2023

Two-dimensional (2D) transition metal carbides (MXene) process attractive conductivity and abundant surface functional groups, providing immense potential in the field of electromagnetic wave (EMW) absorption. However, high spontaneous aggregation MXene suffer from limited EMW response. Inspired by dielectric-magnetic synergy effect, strategy decorating with magnetic elements is expected to solve this challenge. In work, zigzag-like Mo₂TiC₂ nanofiber (Mo-MXene NFs) cross-linked networks are fabricated using HF etching KOH shearing processes. Subsequently, Co-MOF derived CoNi LDH ultrathin nanosheets grown inside Mo-MXene NFs, N-doped carbon matrix anchored alloy nanoparticles formed pyrolysis firmly embedded NFs network. Benefiting synergistic effect highly dispersed small nanoparticles, a 3D conductive network assembled numerous hollow vesicles, dual heterogeneous interface, designed Mo-MXene/CoNi-NC heterostructure provides robust absorption ability reflection loss (R_L) value -68.45 dB at matching thickness 4.38 mm. The performance can be attributed excellent dielectric losses, loss, impedance matching, multiple scattering triggered unique structure. This work puts up great developing advanced MXene-based devices.

Language: Английский

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RGO supported bimetallic MOFs-derived Co/MnO/porous carbon composite toward broadband electromagnetic wave absorption

Carbon, Journal Year: 2023, Volume and Issue: 205, P. 552 - 561

Published: Feb. 1, 2023

Language: Английский

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MnO2 Intercalation-Guided impedance tuning of Carbon/Polypyrrole double conductive layers for electromagnetic wave absorption

Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 460, P. 141749 - 141749

Published: Feb. 7, 2023

Language: Английский

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Structure–Activity Relationship in Microstructure Design for Electromagnetic Wave Absorption Applications

Small Structures, Journal Year: 2023, Volume and Issue: 4(11)

Published: Aug. 8, 2023

Microwave absorbing materials (MAMs) are that effectively absorb incident electromagnetic (EM) wave energy, reducing reflection and scattering. They play a crucial role in enhancing electronic reliability, healthcare, defense security. However, traditional MAMs like ferrites, magnetic metals, polymers possess certain limitations, including low impedance matching, narrow absorption bandwidth, poor chemical stability, high filling ratio, which hinder their further development. To address the requirements of lightweight, wideband, high‐efficiency absorption, precise structural design has emerged as captivating research focus. Additionally, comprehending structure – property relationships between these unique microstructures EM response loss mechanisms still poses significant challenges. Herein, comprehensive review is presented with varied designs encompassing various scales, providing detailed introduction relationship potential corresponding characteristics mechanisms. Moreover, theoretical calculation models, characterization, analysis methods discussed. Finally, article proposes challenges prospects for development absorbers.

Language: Английский

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Multifunctional cellular carbon foams derived from chitosan toward self-cleaning, thermal insulation, and highly efficient microwave absorption properties

Nano Research, Journal Year: 2023, Volume and Issue: 17(3), P. 927 - 938

Published: Nov. 30, 2023

Language: Английский

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