Advanced Composites and Hybrid Materials, Journal Year: 2023, Volume and Issue: 6(6)
Published: Oct. 16, 2023
Language: Английский
Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown
Published: Feb. 13, 2024
Abstract The demand for low‐frequency microwave absorption materials is becoming more and urgent. Novel shape anisotropy chain‐like CoNi fabricated using polyvinylpyrrolidone as a shape‐directing agent via solvothermal method, which then mixed with polydimethylsiloxane (PDMS) to prepare corresponding multifunctional CoNi/PDMS composite films. Shape strong magnetic coupling effect of enhance natural resonance loss capability. minimum reflection (RL min ) −50.5 dB effective bandwidth (EAB) 1.04 GHz (2.64–3.68 GHz) at 3.9 mm CoNi. 18 vol% films present optimal performance RL −56.7 EAB (2.96–4.00 4.1 mm, far superior spherical −9.5 dB. Meantime, the in‐plane inter‐plane thermal conductivity coefficients are 2.05 0.61 W m −1 K , about 1.5 times higher than (1.36 0.42 ), also 220% 190% pure PDMS (0.64 0.21 ). This can broaden applications in 5G communications flexible electronics.
Language: Английский
Citations
225
Small, Journal Year: 2022, Volume and Issue: 19(6)
Published: Nov. 27, 2022
In order to achieve excellent electromagnetic wave (EMW) absorption properties, the microstructure design and component control of absorber are critical. this study, three different structures made Mo2 C/C hollow spheres prepared their microwave behavior is investigated. The double-shell consisting an outer thin shell inner rough thick with multiple EMW loss mechanisms exhibit good properties. further improve MoC1-x /C crystalline phases molybdenum carbide optimize capability materials. Finally, α-phase have best When filling 20 wt.%, minimum reflection at 1.8 mm -50.55 dB effective bandwidth 2 5.36 GHz, which expected be a characteristics "thin, light, wide, strong".
Language: Английский
Citations
183
Journal of Material Science and Technology, Journal Year: 2022, Volume and Issue: 148, P. 250 - 259
Published: Dec. 29, 2022
Language: Английский
Citations
182
Advanced Composites and Hybrid Materials, Journal Year: 2022, Volume and Issue: 5(3), P. 1658 - 1698
Published: June 17, 2022
Language: Английский
Citations
174
Advanced Composites and Hybrid Materials, Journal Year: 2022, Volume and Issue: 5(3), P. 2440 - 2460
Published: April 25, 2022
Language: Английский
Citations
156
Nano-Micro Letters, Journal Year: 2023, Volume and Issue: 15(1)
Published: Oct. 9, 2023
Cobalt nickel bimetallic oxides (NiCo2O4) have received numerous attentions in terms of their controllable morphology, high temperature, corrosion resistance and strong electromagnetic wave (EMW) absorption capability. However, broadening the bandwidth is still a huge challenge for NiCo2O4-based absorbers. Herein, unique NiCo2O4@C core-shell microcubes with hollow structures were fabricated via facile sacrificial template strategy. The concentration oxygen vacancies morphologies three-dimensional (3D) cubic framework effectively optimized by adjusting calcination temperature. specially designed 3D structure facilitated multiple reflections incident waves provided rich interfaces between components, generating significant interfacial polarization losses. Dipole polarizations induced could further enhance attenuation ability EM waves. exhibit superior EMW capability minimum RL (RLmin) -84.45 dB at 8.4 GHz thickness 3.0 mm. Moreover, ultrabroad effective (EAB) as large 12.48 (5.52-18 GHz) obtained. This work believed to illuminate path synthesis high-performance cobalt absorbers excellent capability, especially bandwidth.
Language: Английский
Citations
145
Nano Research, Journal Year: 2022, Volume and Issue: 15(6), P. 5590 - 5600
Published: March 29, 2022
Language: Английский
Citations
133
Carbon, Journal Year: 2023, Volume and Issue: 213, P. 118208 - 118208
Published: June 13, 2023
Language: Английский
Citations
126
Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 467, P. 143518 - 143518
Published: May 16, 2023
Language: Английский
Citations
123
Nano-Micro Letters, Journal Year: 2023, Volume and Issue: 15(1)
Published: Aug. 25, 2023
The development of wearable multifunctional electromagnetic protective fabrics with multifunctional, low cost, and high efficiency remains a challenge. Here, inspired by the unique flower branch shape "Thunberg's meadowsweet" in nature, nanofibrous composite membrane hierarchical structure was constructed. Integrating sophisticated 0D@2D@1D structures multiple heterointerfaces can fully unleash application potential membrane. targeted induction method used to precisely regulate formation site morphology metal-organic framework precursor, intelligently integrate heterostructures enhance dielectric polarization, which improves impedance matching loss mechanisms wave absorbing materials. Due synergistic enhancement electrospinning-derived carbon nanofiber "stems", MOF-derived nanosheet "petals" transition metal selenide nano-particle "stamens", CoxSey/NiSe@CNSs@CNFs (CNCC) obtains minimum reflection value (RLmin) -68.40 dB at 2.6 mm maximum effective absorption bandwidth (EAB) 8.88 GHz thin thickness 2.0 filling amount only 5 wt%. In addition, multi-component heterostructure endow fibrous excellent flexibility, water resistance, thermal management, other properties. This work provides perspectives for precise design rational fabrics.
Language: Английский
Citations
121