Monodispersed Co@C nanoparticles anchored on reclaimed carbon black toward high-performance electromagnetic wave absorption

Li, Zhenjiang; Lin, Hui; Xie, Yuxin; Zhao, Laibin; Guo, Yuying; Cheng, Tingting; Ling, Hailong; Meng, Alan; Li, Shaoxiang; Zhang, Meng

doi:10.1016/j.jmst.2022.03.004

Cited by 102 publications

(16 citation statements)

References 59 publications

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“…With the portability and integration of various electronic devices, the industry has put forward more comprehensive performance requirements for future wave-absorbing materials to match them, including low density, small thickness, wide frequency range, and strong wave absorption ability [10]. Undoubtedly, carbon-based microwave-absorbing materials with low density, high stability [11], high electrical conductivity, and wide variety have become the rst choice for researchers [12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Customizing the structure and chemical composition of ultralight carbon foams for superior microwave absorption performance

Cheng

Guo

Xie

et al. 2023

Carbon

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Section: Introductionmentioning

confidence: 99%

Customizing the structure and chemical composition of ultralight carbon foams for superior microwave absorption performance

Cheng

Guo

Xie

et al. 2023

Carbon

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“…Despite the multiple polarization and proper impedance match provided by the core-shell structure, the monotonous dielectric loss mechanism of Ti3C2TxMXene nanosheets still results in narrow-band microwave absorption. To conquer this challenge, magnetic materials have been intercalated which can achieve effective wide-band microwave absorption and enhance microwave attenuation via the synergistic effect of dielectric dissipation and magnetic loss [24][25][26][27]. However, the magnetic materials are prone to agglomerate during the synthesis process, leading to a local impedance mismatch.…”

Section: Introductionmentioning

confidence: 99%

Construction of hydrangea-like core–shell SiO ₂@Ti ₃C ₂T _x@CoNi microspheres for tunable electromagnetic wave absorbers

Niu¹,

Jiang²,

Xia³

et al. 2023

Journal of Advanced Ceramics

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Ti3C2TxMXene shows great potentials in the application as microwave absorbers due to its high attenuation ability. However, excessively high permittivity and self-stacking are the main obstacles that constrain its wide range of applications. To tackle these 2 problems, herein, the microspheres of SiO2@Ti3C2Tx@CoNi with the hydrangea-like core-shell structure were designed and prepared by a combinatorial electrostatic assembly and hydrothermal reaction method. These microspheres are constructed by an outside layers of CoNi nanosheets and intermediate Ti3C2TxMXene nanosheets wraping on the core of modified SiO2, engendering both homogenous and heterogeneous interfaces. Such trilayer SiO2@Ti3C2Tx@CoNi microspheres are "magnetic micro size supercapacitors" that can not only induce dielectric loss and magnetic loss but also provide multilayer interfaces to enhance the interfacial polarization. The optimized impedance matching and core-shell structure could boost the reflection loss by electromagnetic synergy. The synthesized SiO2@Ti3C2Tx@CoNi microspheres demonstrate outstanding microwave absorption performance benefited from these advantages. The obtained reflection loss value was -63.95 dB at an ultra-thin thickness of 1.2 mm, corresponding to an effective absorption bandwidth of 4.56 GHz. This work demonstrates the trilayer core-shell structure designing strategy is highly efficient for tuning the MA performance of MXene-based microspheres.

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“…Wave-absorbing materials are categorized into three main types: resistive-loss type, magnetic-loss type, and dielectric-loss type depending on the type of loss. Resistive-loss type nanomaterials (such as carbon black, − graphene, − carbon nanotubes, − etc.) are mainly used to detect electromagnetic waves by interacting with electric fields and have the advantages of high electrical conductivity loss and narrow density.…”

Section: Introductionmentioning

confidence: 99%

Review of Dielectric Carbide, Oxide, and Sulfide Nanostructures for Electromagnetic Wave Absorption

Lu,

Zhang,

Liu

et al. 2023

ACS Appl. Nano Mater.

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Following the growth of infotech and electronic industries, electromagnetic-wave-absorbing materials play an essential role in the traction of the need for high-precision weaponry and intelligent electronic equipment. The exploitation of high-performance electromagnetic-wave-absorbing materials has emerged as a strategic challenge to be solved in the upgrading of military equipment and civil electromagnetic security. The more maturely studied absorbing materials (carbon, ferrite, etc.) have a single loss mechanism and poor resistance matching, which are already not enough to cover the basic needs. To explore absorbing materials that satisfy both impedance matching and attenuation balance, dielectric nanomaterials have come to the fore. They can realize light weight, thin layer, broad band, and multiband, which have great application prospects. In this review, we start with a summary of typical dielectric loss mechanisms (interfacial polarization, dipole polarization, and conduction loss). Next, diverse carbides, oxides, sulfides, and their composites with dielectric or magnetic materials are described, and the nanostructure advantages and wave-absorbing performance advantages are investigated. Then, the applications of wave-absorbing materials are depicted. Lastly, the challenges faced by dielectric-type materials are outlined, and future development trends are foreseen. Overall, this review offers an overview of the advances in the study of dielectric nanoabsorbing materials.

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Monodispersed Co@C nanoparticles anchored on reclaimed carbon black toward high-performance electromagnetic wave absorption

Cited by 102 publications

References 59 publications

Customizing the structure and chemical composition of ultralight carbon foams for superior microwave absorption performance

Customizing the structure and chemical composition of ultralight carbon foams for superior microwave absorption performance

Construction of hydrangea-like core–shell SiO ₂@Ti ₃C ₂T _x@CoNi microspheres for tunable electromagnetic wave absorbers

Review of Dielectric Carbide, Oxide, and Sulfide Nanostructures for Electromagnetic Wave Absorption

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Monodispersed Co@C nanoparticles anchored on reclaimed carbon black toward high-performance electromagnetic wave absorption

Cited by 102 publications

References 59 publications

Customizing the structure and chemical composition of ultralight carbon foams for superior microwave absorption performance

Customizing the structure and chemical composition of ultralight carbon foams for superior microwave absorption performance

Construction of hydrangea-like core–shell SiO 2@Ti 3C 2T x @CoNi microspheres for tunable electromagnetic wave absorbers

Review of Dielectric Carbide, Oxide, and Sulfide Nanostructures for Electromagnetic Wave Absorption

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Construction of hydrangea-like core–shell SiO ₂@Ti ₃C ₂T _x@CoNi microspheres for tunable electromagnetic wave absorbers