Multi-mode tunable electromagnetic wave absorber based on hollow nano-cage structure and self-anticorrosion performance

Pan, Yuelei; Lan, Di; Jia, Zirui; Feng, Ailing; Feng, Xing; Wu, Guanglei; Yin, Pengfei

doi:10.1007/s42114-024-00851-4

Adv Compos Hybrid Mater

2024

DOI: 10.1007/s42114-024-00851-4

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Multi-mode tunable electromagnetic wave absorber based on hollow nano-cage structure and self-anticorrosion performance

Yuelei Pan,

Di Lan,

Zirui Jia

et al.

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Cited by 25 publications

References 77 publications

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Cross‐Scale Synergistic Manipulation of Dielectric Genes in Polymetallic Sulfides from Micropolarization to Macroconductance Toward Wide‐Band Microwave Absorption

Cheng,

Li,

Raza

et al. 2024

Adv Funct Materials

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Recently, the design and development of efficient microwave absorbents by facile engineering approaches have attracted much attention. Particularly, some unique structures caused by cross‐scale design are promising in enhancing the absorbing capability toward microwave irradiation. Herein, the cross‐scale design strategy is implemented to enhance the electromagnetic wave absorption performance of polymetallic sulfides (PMS). In PMS, the dipole polarization unit is optimized, and the distribution of electronic states is improved by doping Ti atoms; Meanwhile, the MS/M3S4 homogeneous hetero‐phases interfaces is constructed in PMS using a phase separation strategy; and the conductivity of PMS is modulated by the addition of acetylene black (ACET). The cross‐scale synergy of microwave absorption leads to a significant enhancement of the microwave absorption (MA) performance of PMS/ACET composites. The optimal reflection loss value of Ti‐LES with 10% ACET addition reaches −55.49 dB and the effective absorption bandwidth reaches 6.73 GHz. The 17.5% ACET‐conditioned Ti‐HES achieves a reflection loss of −37.2 dB at a low frequency of 4.8 GHz. This study not only provides a novel strategy for the development of new broadband MA materials but also validates a new idea for the multi‐scale synergistic optimization of MA materials.

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Cross‐Scale Synergistic Manipulation of Dielectric Genes in Polymetallic Sulfides from Micropolarization to Macroconductance Toward Wide‐Band Microwave Absorption

Cheng,

Li,

Raza

et al. 2024

Adv Funct Materials

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Cation Bimetallic MOF Anchored Carbon Fiber for Highly Efficient Microwave Absorption

Zhang,

Li,

Shi

et al. 2024

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Carbon fiber (CF) is a potential microwave absorption (MA) material due to the strong dielectric loss. Nevertheless, owing to the high conductivity, poor impedance matching of carbon‐based materials results in limited MA performance. How to solve this problem and achieve excellent MA performance remains a principal challenge. Herein, taking full advantage of CF and excellent impedance matching of bimetallic metal–organic frameworks (MOF) derivatives layer, an excellent microwave absorber based on micron‐scale 1D CF and NiCoMOF (CF@NiCoMOF‐800) is developed. After adjusting the oxygen vacancies of the bimetallic MOF, the resultant microwave absorber presented excellent MA properties including the minimum reflection loss (RLmin) of −80.63 dB and wide effective absorption bandwidth (EAB) of 8.01 GHz when its mass percent is only 5 wt.% and the thickness is 2.59 mm. Simultaneously, the mechanical properties of the epoxy resin (EP)‐based coating with this microwave absorber are effectively improved. The hardness (H), elastic modulus (E), bending strength, and compressive strength of CF@NiCoMOF‐800/EP coating are 334 MPa, 5.56 GPa, 82.2 MPa, and 135.8 MPa, which is 38%, 15%, 106% and 53% higher than EP coating. This work provides a promising solution for carbon materials achieving excellent MA properties and mechanical properties.

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Ball-milled MoO3@NiCo2Se4 composite for supercapacitor electrode

Thejasree,

Aparna,

Ghosh

et al. 2024

J Solid State Electrochem

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Multi-mode tunable electromagnetic wave absorber based on hollow nano-cage structure and self-anticorrosion performance

Cited by 25 publications

References 77 publications

Cross‐Scale Synergistic Manipulation of Dielectric Genes in Polymetallic Sulfides from Micropolarization to Macroconductance Toward Wide‐Band Microwave Absorption

Cross‐Scale Synergistic Manipulation of Dielectric Genes in Polymetallic Sulfides from Micropolarization to Macroconductance Toward Wide‐Band Microwave Absorption

Cation Bimetallic MOF Anchored Carbon Fiber for Highly Efficient Microwave Absorption

Ball-milled MoO3@NiCo2Se4 composite for supercapacitor electrode

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