Published: Jan. 1, 2025
Language: Английский
Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(44)
Published: May 21, 2024
Abstract Anion defect engineering is proven to be an efficient approach reconstruct the electronic configuration of carbon‐based magnetoelectric materials for targeted modulation electromagnetic (EM) performance. However, traditional mono‐anionic doping suffers from low concentration and lacks diverse polarization mechanisms. In this work, multi‐anions (N/S/F) stepwise‐doped carbon/Fe 3 C composites are elaborately constructed, wherein predesigned N defects serve as activated sites anomalously adopting S anions (Step I) subsequent F II) in non‐marginal areas carbon layer. It found that prefers replace pyrrolic while tends form dangling bonds with site adjacent pyridinic N. Intriguingly, besides inherent polarized resonance at ≈15 GHz, customized induce new resonances ≈10 GHz ≈15+ respectively. Under a typical multi‐polarization effect synergetic magnetic response, N/S/F harvest broadest bandwidth 8.28 (9.72–18 GHz) 2.55 mm, covering wide frequency range almost X Ku bands. This work demonstrates positive impact localized multi‐defects customization on expanding microwave absorption bandwidth, providing valuable insights advanced design ultra‐broadband absorbers.
Language: Английский
Citations
105
Nano-Micro Letters, Journal Year: 2024, Volume and Issue: 17(1)
Published: Sept. 27, 2024
Abstract Currently, the demand for electromagnetic wave (EMW) absorbing materials with specific functions and capable of withstanding harsh environments is becoming increasingly urgent. Multi-component interface engineering considered an effective means to achieve high-efficiency EMW absorption. However, modulation has not been fully discussed great potential in field In this study, multi-component tin compound fiber composites based on carbon (CF) substrate were prepared by electrospinning, hydrothermal synthesis, high-temperature thermal reduction. By utilizing different properties substances, rich heterogeneous interfaces are constructed. This effectively promotes charge transfer enhances interfacial polarization conduction loss. The SnS/SnS 2 /SnO /CF abundant have exhibit excellent absorption at a loading 50 wt% epoxy resin. minimum reflection loss (RL) − 46.74 dB maximum bandwidth 5.28 GHz. Moreover, composite coatings exhibited long-term corrosion resistance Q235 steel surfaces. Therefore, study provides strategy design complex environments.
Language: Английский
Citations
59
Nano-Micro Letters, Journal Year: 2024, Volume and Issue: 16(1)
Published: April 8, 2024
Abstract With the continuous advancement of communication technology, escalating demand for electromagnetic shielding interference (EMI) materials with multifunctional and wideband EMI performance has become urgent. Controlling electrical magnetic components designing material structure have attracted extensive interest, but remain a huge challenge. Herein, we reported alternating composite films composed hollow metal–organic frameworks/layered MXene/nanocellulose (HMN) by vacuum-assisted filtration process. The HMN exhibit excellent effectiveness in GHz frequency (66.8 dB at Ka-band) THz (114.6 0.1–4.0 THz). Besides, also high reflection loss 39.7 0.7 an effective absorption bandwidth up to 2.1 THz. Moreover, show remarkable photothermal conversion performance, which can reach 104.6 °C under 2.0 Sun 235.4 0.8 W cm −2 , respectively. unique micro- macro-structural design structures will absorb more incident waves via interfacial polarization/multiple scattering produce heat energy local surface plasmon resonance effect. These features make film promising candidate advanced devices future 6G protection electronic equipment cold environments.
Language: Английский
Citations
29
eScience, Journal Year: 2024, Volume and Issue: unknown, P. 100292 - 100292
Published: June 1, 2024
Developing advanced nanocomposite phase change materials (PCMs) integrating zero-energy thermal management, microwave absorption, photothermal therapy and electrical signal detection can promote the leapfrog development of flexible wearable electronic devices. For this goal, we propose a multidimensional collaborative strategy combining two-dimensional (2D) MXene nanosheets with metal-organic framework-derived one-dimensional (1D) carbon nanotubes (CNTs) zero-dimensional (0D) metal nanoparticles. After encapsulating paraffin wax (PW) in three-dimensional (3D) networked MXene/CoNi-C, resulting composite PCMs exhibit excellent energy storage capacity long-term thermally reliable stability. Benefiting from synergistically enhanced effects CNTs, Co/Ni nanoparticles MXene, PW@MXene/CoNi-C capture photons efficiently transfer phonons quickly, yielding an ultrahigh conversion efficiency 97.5%. Additionally, high absorption minimum reflection loss −49.3 dB at 8.03 GHz heat-related application scenarios. More attractively, corresponding film simultaneously achieve management electromagnetic shielding devices, as well for individuals. This functional integration design provides important reference developing multifunctional
Language: Английский
Citations
25
Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: unknown, P. 157121 - 157121
Published: Oct. 1, 2024
Language: Английский
Citations
24
Nano-Micro Letters, Journal Year: 2025, Volume and Issue: 17(1)
Published: Feb. 6, 2025
Abstract Herein, a novel Janus-structured multifunctional membrane with integrated electromagnetic interference (EMI) shielding and personalized thermal management is fabricated using shear-induced in situ fibrillation vacuum-assisted filtration. Interestingly, within the polytetrafluoroethylene (PTFE)-carbon nanotube (CNT)-Fe 3 O 4 layer (FCFe), CNT nanofibers interweave PTFE fibers to form stable “silk-like” structure that effectively captures Fe particles. By incorporating highly conductive MXene layer, FCFe/MXene (FCFe/M) exhibits excellent electrical/thermal conductivity, mechanical properties, flame retardancy. Impressively, benefiting from rational regulation of component proportions design Janus structure, FCFe/M thickness only 84.9 µm delivers outstanding EMI effectiveness 44.56 dB X-band, normalized specific SE reaching 10,421.3 cm 2 g −1 , which attributed “absorption-reflection-reabsorption” mechanism. Furthermore, demonstrates low-voltage-driven Joule heating fast-response photothermal performance. Under stimulation V voltage an optical power density 320 mW −2 surface temperatures membranes can reach up 140.4 145.7 °C, respectively. In brief, anti-electromagnetic radiation temperature attractive candidate for next generation wearable electronics, compatibility, visual heating, thermotherapy, military aerospace applications.
Language: Английский
Citations
4
Solar Energy Materials and Solar Cells, Journal Year: 2025, Volume and Issue: 282, P. 113395 - 113395
Published: Jan. 1, 2025
Language: Английский
Citations
3
Carbon, Journal Year: 2023, Volume and Issue: 215, P. 118450 - 118450
Published: Sept. 15, 2023
Language: Английский
Citations
27
Composites Science and Technology, Journal Year: 2024, Volume and Issue: 256, P. 110764 - 110764
Published: July 16, 2024
Language: Английский
Citations
17
Coordination Chemistry Reviews, Journal Year: 2024, Volume and Issue: 511, P. 215870 - 215870
Published: April 21, 2024
Language: Английский
Citations
16