Journal of Alloys and Compounds, Год журнала: 2023, Номер 976, С. 172957 - 172957
Опубликована: Ноя. 28, 2023
Язык: Английский
Nano-Micro Letters, Год журнала: 2024, Номер 16(1)
Опубликована: Июль 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.
Язык: Английский
Процитировано
27
Advanced Functional Materials, Год журнала: 2024, Номер unknown
Опубликована: Июль 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.
Язык: Английский
Процитировано
22
Carbon, Год журнала: 2024, Номер 224, С. 119058 - 119058
Опубликована: Март 21, 2024
Язык: Английский
Процитировано
17
Composites Part A Applied Science and Manufacturing, Год журнала: 2023, Номер 177, С. 107940 - 107940
Опубликована: Дек. 1, 2023
Язык: Английский
Процитировано
28
Carbon, Год журнала: 2023, Номер 217, С. 118600 - 118600
Опубликована: Ноя. 15, 2023
Язык: Английский
Процитировано
27
Chemical Engineering Journal, Год журнала: 2024, Номер 490, С. 151552 - 151552
Опубликована: Апрель 23, 2024
Язык: Английский
Процитировано
14
ACS Applied Nano Materials, Год журнала: 2024, Номер 7(3), С. 2702 - 2710
Опубликована: Янв. 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.
Язык: Английский
Процитировано
10
Advanced Functional Materials, Год журнала: 2024, Номер unknown
Опубликована: Сен. 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.
Язык: Английский
Процитировано
10
Chemical Engineering Journal, Год журнала: 2024, Номер 495, С. 153663 - 153663
Опубликована: Июль 2, 2024
Язык: Английский
Процитировано
9
Journal of Material Science and Technology, Год журнала: 2025, Номер unknown
Опубликована: Янв. 1, 2025
Язык: Английский
Процитировано
1