Carbon vacancies regulation strategy for boosting the high-temperature microwave absorption performance of (Co0.2Mo0.2V0.2Nb0.2Ta0.2)Cx high-entropy carbides DOI
Yuping Duan,

Likun Niu,

Zerui Li

et al.

Journal of Materials Chemistry C, Journal Year: 2024, Volume and Issue: 12(24), P. 8794 - 8803

Published: Jan. 1, 2024

The microwave absorption performance of (Co 0.2 Mo V Nb Ta )C x high-entropy carbides prepared by ball milling is optimized modulating the concentration carbon vacancies.

Language: Английский

MOFs-Derived Strategy and Ternary Alloys Regulation in Flower-Like Magnetic-Carbon Microspheres with Broadband Electromagnetic Wave Absorption DOI Creative Commons
Mengqiu Huang,

Bangxin Li,

Yuetong Qian

et al.

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

32
Built‐In Electric Field Enhancement Strategy Induced by Cross‐Dimensional Nano‐Heterointerface Design for Electromagnetic Wave Absorption DOI
Xin Li, Xinlei Wang, Minghang Li

et al.

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

28
Structural engineering on carbon materials for microwave absorption: From micro to macro to meta DOI
Jinxu Li, Siyu Chen,

Ruixin Fan

et al.

Carbon, Journal Year: 2024, Volume and Issue: 224, P. 119058 - 119058

Published: March 21, 2024

Language: Английский

Citations

21
A strategy to fabricate hierarchical microporous architecture of polyimide nanofibrous aerogels with efficient electromagnetic wave absorption and thermal insulation DOI

Meng Sun,

Zhengyu Guo,

Wenting Zhang

et al.

Composites Part A Applied Science and Manufacturing, Journal Year: 2023, Volume and Issue: 177, P. 107940 - 107940

Published: Dec. 1, 2023

Language: Английский

Citations

30
Asymmetric c-MWCNT/AgNWs/PANFs hybrid film constructed by tailoring conductive-blocks strategy for efficient EMI shielding DOI
Fengfeng Jia, Zhaoqing Lu,

Siqi Li

et al.

Carbon, Journal Year: 2023, Volume and Issue: 217, P. 118600 - 118600

Published: Nov. 15, 2023

Language: Английский

Citations

27
Hollow Fe3O4/Fe@C nanocubes for broadband microwave absorption spanning low- and high-frequency bands DOI
Xiangyu Wang,

Hongsong Zhu,

Boyuan Cao

et al.

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 490, P. 151552 - 151552

Published: April 23, 2024

Language: Английский

Citations

14
Flexible and Recyclable MXene Nanosheet/Ag Nanowire/Cellulose Nanocrystal Composite Films for Electromagnetic Interference Shielding DOI

Shasha Yan,

Hong Zhang, Ling Li

et al.

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

12
Electrospinning fabrication of hollow C@TiO2/Fe3C nanofibers composites for excellent wave absorption at a low filling content DOI

Bai Ling Jiang,

Jianxun Shang,

Faying Zhang

et al.

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 495, P. 153663 - 153663

Published: July 2, 2024

Language: Английский

Citations

12
Optimizing MOF‐Derived Electromagnetic Wave Absorbers through Gradient Pore Regulation for Pareto Improvement DOI
Guang Liu,

Panbin Zhu,

Ji Teng

et al.

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

11
Biomass-derived oriented carbon aerogels with integrated high-performance microwave absorption and thermal insulation DOI
Huanqin Zhao, Xin Yang, Jiachen Sun

et al.

Journal of Material Science and Technology, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Language: Английский

Citations

2