Journal of Alloys and Compounds, Journal Year: 2023, Volume and Issue: 976, P. 172957 - 172957
Published: Nov. 28, 2023
Language: Английский
Nano-Micro Letters, Journal Year: 2024, Volume and Issue: 16(1)
Published: July 12, 2024
Abstract Broadband electromagnetic (EM) wave absorption materials play an important role in military stealth and health protection. Herein, metal–organic frameworks (MOFs)-derived magnetic-carbon CoNiM@C (M = Cu, Zn, Fe, Mn) microspheres are fabricated, which exhibit flower-like nano–microstructure with tunable EM response capacity. Based on the MOFs-derived CoNi@C microsphere, adjacent third element is introduced into magnetic CoNi alloy to enhance performance. In term of broadband absorption, order efficient bandwidth (EAB) value Mn > Fe Zn Cu microspheres. Therefore, CoNiMn@C hold outstanding EAB can reach up 5.8 GHz (covering 12.2–18 at 2.0 mm thickness). Besides, off-axis electron holography computational simulations applied elucidate inherent dielectric dissipation loss. Rich heterointerfaces promote aggregation negative/positive charges contacting region, forming interfacial polarization. The graphitized carbon layer catalyzed by CoNiMn core offered mobility path, boosting conductive Equally importantly, coupling observed strengthen responding behaviors. This study provides a new guide build regulating ternary alloy.
Language: Английский
Citations
27
Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown
Published: July 1, 2024
Abstract Nano‐heterointerface engineering has been demonstrated to influence interfacial polarization by expanding the interface surface area and constructing a built‐in electric field (BEF), thus regulating electromagnetic (EM) wave absorption. However, dielectric‐responsive mechanism of BEF needs further exploration enhance comprehensive understanding polarization, particularly in terms quantifying optimizing strength. Herein, “1D expanded 2D structure” carbon matrix is designed, semiconductor ZnIn 2 S 4 (ZIS) introduced construct carbon/ZIS heterostructure. The cross‐dimensional nano‐heterointerface design increases coupling sites induces an increase Fermi level difference on both sides modulate distribution charges, thereby strengthening at interface. synergistic effect leads excellent EM absorption performance (minimum reflection coefficient RC min = −67.4 dB, effective bandwidth EAB 6.0 GHz) This work introduces general modification model for enhancing inspires development new strategies functional materials with unique electronic behaviors through heterointerface engineering.
Language: Английский
Citations
22
Carbon, Journal Year: 2024, Volume and Issue: 224, P. 119058 - 119058
Published: March 21, 2024
Language: Английский
Citations
17
Composites Part A Applied Science and Manufacturing, Journal Year: 2023, Volume and Issue: 177, P. 107940 - 107940
Published: Dec. 1, 2023
Language: Английский
Citations
28
Carbon, Journal Year: 2023, Volume and Issue: 217, P. 118600 - 118600
Published: Nov. 15, 2023
Language: Английский
Citations
27
Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 490, P. 151552 - 151552
Published: April 23, 2024
Language: Английский
Citations
14
ACS Applied Nano Materials, Journal Year: 2024, Volume and Issue: 7(3), P. 2702 - 2710
Published: Jan. 19, 2024
With the increasing popularity of electronic communication equipment, electromagnetic pollution continues to worsen, and requirement for ultrathin, highly flexible, multifunctional interference (EMI) shielding films is becoming more imperative. Within this study, composite were prepared by introducing one-dimensional (1D) cellulose nanocrystals (CNC) silver nanowires (AgNWs) into two-dimensional (2D) MXene-based materials using method vacuum-filtration-induced self-assembly. Benefiting from 1D/2D conductive network composed AgNWs MXene, film has a high conductivity (36,244 S m–1) excellent EMI performance (69.94 dB) at thickness 54 μm. The introduction 1D sustainable CNC as "binder" increased tensile strength 16.75 MPa (pure Ti3C2Tx MXene film) 26.14 MPa. In addition, MXene/AgNWs/CNC have outstanding Joule heating performance, surface temperature exceeded 70.2 °C under 2.5 V. Moreover, recyclable properties, test results indicate that SE value 40.78 dB after recycling. We believe designed promising applications with respect protection in flexible wearable devices, aerospace systems, extreme environments.
Language: Английский
Citations
10
Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown
Published: Sept. 9, 2024
Abstract Porous materials emerging as potential high‐efficiency electromagnetic (EM) wave absorbers confront a critical trade‐off between impedance matching and attenuation capability. In this study, versatile strategy is reported to overcome challenge by constructing gradient pores via solvent‐assisted linker exchange for the fabrication of metal‐organic framework (MOF) derived Fe/Fe 3 Co 7 /Co/C composites with high porosity. The characteristics single‐pored gradient‐pored derivatives are investigated through combined experimental simulation approaches. Simulated space EM field, loss density, Smith charts reveal significantly enhanced interactions optimized within pores. Compared individual MOF derivatives, derivative exhibits improved from large‐pored shell superior capability small‐pored core, giving rise Pareto improvement in absorption strong reflection (−64.7 dB) wide effective adsorption bandwidth (5.8 GHz) at thickness 2.5 mm. This work not only advances novel pore efficient capability, but also sheds light on underlying mechanisms interaction varied porosity, offering insights extended designs magnetic, electric optic devices.
Language: Английский
Citations
10
Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 495, P. 153663 - 153663
Published: July 2, 2024
Language: Английский
Citations
9
Journal of Material Science and Technology, Journal Year: 2025, Volume and Issue: unknown
Published: Jan. 1, 2025
Language: Английский
Citations
1