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Article
Materials Science, Multidisciplinary
Ruiwen Shu et al.
Summary: In this work, a three-dimensional composite aerogel material composed of nitrogen-doped reduced graphene oxide, magnesium ferrite, and polyaniline was successfully synthesized. The aerogel exhibited low density, broad bandwidth, and strong absorption capacity. Compared with other materials, this composite aerogel showed better microwave absorbing performance and achieved the maximum absorption bandwidth at a low filling ratio.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2024)
Article
Materials Science, Multidisciplinary
Jiajun Li et al.
Summary: To solve the problem of electromagnetic pollution, a three-dimensional pyrolytic branched hollow architecture carbon/molybdenum disulfide (PBHAC/MoS 2 ) composite was prepared. The composite exhibited optimized impedance matching and multiple loss mechanisms, resulting in excellent electromagnetic wave absorption performance.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2024)
Article
Materials Science, Multidisciplinary
Jing-xiong Dai et al.
Summary: To enhance the low-frequency microwave absorption performance of hollow magnetic metal-carbon composites, hollow (Ni/C)/ZnFe2O4 composite was prepared by introducing submicron ZnFe2O4 into hollow Ni/ C microspheres. The addition of ZnFe2O4 gradually enhanced the low-frequency microwave absorption performance of the composites. The improved absorption performance can be attributed to the introduction of ZnFe2O4, which improved the attenuation coefficient and impedance matching of the (Ni/C)/ZnFe2O4 composite.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Longjun Rao et al.
Summary: In this study, a confined diffusion strategy is proposed to fabricate functional magnetic-carbon hollow microspheres, which exhibit excellent low-frequency EM wave absorption performance. The optimized hollow FeCo@C microspheres demonstrate a minimum reflection loss (RLmin) of -35.9 dB and absorption bandwidth covering almost the entire C-band. The investigation reveals that large size of the magnetic-carbon integration, high-density confined magnetic units, and strong magnetic coupling are essential for enhancing the magnetic loss dissipation of low-frequency EM waves.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Materials Science, Ceramics
Shengtao Gao et al.
Summary: Reasonable design and optimization of material properties are crucial for achieving excellent electromagnetic wave absorption capacities. In this study, residual carbon derived from coal gasification fine slag-loaded hollow-spherical Fe3O4 nanoparticles (Fe3O4 NPs@RC) was synthesized and its electromagnetic parameters and absorption performance were analyzed. It was found that the modified composition and microstructure of Fe3O4 NPs@RC resulted in improved absorption capacity, with the binary composite showing the minimum reflection loss and broad absorption bandwidth under a specific thickness and filler content. The study also proposed a possible electromagnetic wave absorption mechanism and provides an effective strategy for designing high-performance absorbers using coal gasification solid waste-based materials.
CERAMICS INTERNATIONAL
(2023)
Review
Materials Science, Multidisciplinary
Ming Chang et al.
Summary: The current electromagnetic environment has increased the demand for efficient microwave absorption (MA) materials. Ti 3 C 2 T x MXene, a 2D transition-metal carbide, is considered a promising MA material due to its excellent dielectric properties and structural processability. To further enhance the MA performance and environmental adaptability of Ti 3 C 2 T x MXene, composition and structure design strategies have been extensively studied, focusing on component optimization and structure manipulation based on the microwave absorption mechanism. This article provides a brief introduction to the microwave absorption mechanism and discusses the design strategies of Ti 3 C 2 T x MXene-based MA materials, as well as their future prospects.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Physical
Yuelei Pan et al.
Summary: Six different morphologies of N-Ni/C nanostructures were prepared by one-step hydrothermal method and high temperature carbonization by adjusting the types of nickel salts and reaction solvents. The electromagnetic wave absorption performance of these nanostructures was compared and analyzed. Among them, the nanoflower-like N-Ni/C composite exhibited excellent dielectric loss and magnetic loss synergistic effect, leading to superior electromagnetic wave absorption properties. The minimum reflection loss value at a thickness of 1.9 mm was -59.56 dB at 16.88 GHz, and the effective absorption bandwidth value reached 6.0 GHz at a thickness of 2.2 mm. The research findings highlight the significant influence of different morphologies and multiple lattice structures on electromagnetic wave absorption performance, providing new research ideas for the development of high-performance absorbing materials.
Article
Materials Science, Multidisciplinary
Shujie Liu et al.
Summary: The hierarchical carbon/CoFe2O4/Co3Fe7 composites were prepared using a innovative technique, and they showed excellent attenuation properties for absorbing incident electromagnetic wave.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Chemistry, Physical
Zuoting Yang et al.
Summary: In this study, a double-shelled hollow nanorod material with excellent microwave absorption performance was developed through the optimization of morphology structure and multicomponent recombination strategies. By adjusting the addition amount, the microstructure and magnetic/dielectric compositions of the material were effectively optimized. The designed material exhibited outstanding performance in absorption bandwidth and reflection loss, which can be attributed to its unique structure and composition characteristics.
Article
Chemistry, Physical
Yan-Li Wang et al.
Summary: Carbon nanotubes-coated cobalt/carbon particles were fabricated by sintering metal-organic frameworks (MOFs) and melamine composites, leading to excellent absorbing composites with lightweight and wide absorbing bandwidth.
Article
Chemistry, Physical
Cankun Ma et al.
Summary: The N-doped porous core-shell nanocomposite of polydopamine wrapped ZIF-67 precursors was obtained through dopamine self-polymerization. After high-temperature pyrolysis treatment, the N-doped graphitized carbon layers wrapped cobalt absorber with porous structure exhibited high efficiency and adjustable EMW absorbing properties.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Physical
Yalei Hao et al.
Summary: In this study, hollow bowl-like carbon (HBC) materials were controllably constructed by the hard template method, and their tunable pore structure, surface properties, and shell thicknesses contribute to excellent performance. The HBC with a shell thickness of 3 nm exhibited the best wave-absorbing performance at a 4% absorber content. Its minimum reflection loss value was -50 dB at a thin thickness of 2.26 mm, and its effective absorption bandwidth, at a fixed thin thickness of 2 mm, could reach as wide as 7.04 GHz (10.96-18 GHz). Thin shells are essential for achieving lightweight and the bowl-like shape prevents the formation of percolative networks. with a low mass fraction of absorber content, the HBC materials can obtain moderate dielectric constant and loss, leading to good impedance matching and sufficient attenuation capacity. This work provides an effective and sustainable approach to utilize porous carbon materials for developing lightweight and high-performance wave-absorbing materials.
Article
Nanoscience & Nanotechnology
Shuo Zhang et al.
Summary: The development of wearable multifunctional electromagnetic protective fabrics remains a challenge. This study constructed a nanofibrous composite membrane with a hierarchical structure, inspired by Thunberg's meadowsweet. The composite membrane integrates sophisticated hierarchical structures and multiple heterointerfaces, fully unleashing its multifunctional application potential. The membrane exhibits excellent electromagnetic wave absorption properties, as well as flexibility, water resistance, and thermal management, making it an ideal material for wearable protective fabrics.
NANO-MICRO LETTERS
(2023)
Article
Materials Science, Multidisciplinary
Kun Wan et al.
Summary: Constructing resistive layer with novel structure has great potential in enhancing electromagnetic properties of soft magnetic materials. FeNi@SiO2 composites with controllable core-shell structures, including 2D-type laminar shell and 3D-type raspberry-like shell, were fabricated. The structure of SiO2 shell depended on the concentration of TEOS. The unique raspberry-like shell contributed to improved electromagnetic performance of FeNi@SiO2 cores, including high resistivity, low eddy current loss, and low loss factor, as well as enhanced attenuation and acceptable impedance matching in GHz range.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Chemistry, Physical
Di Lan et al.
Summary: In the field of electromagnetic wave absorption, intrinsic conductive polymers, such as polyaniline (PANI) and polypyrrole (PPy), have gained popularity due to their excellent electrical conductivity and loss ability. However, current research lacks a comprehensive understanding of the impact mechanisms of polymer aggregation states on the material's absorption performance and mechanism. To address this, a series of flexible PANI sponge absorbers with different molecular weights and aggregation states were prepared, and their absorption properties were controlled by adjusting the crystallinity and aggregation characteristics of PANI. This study provides a deeper theoretical support for the research and promotion of polymer absorbers.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Engineering, Environmental
Jinkun Liu et al.
Summary: The study introduces a novel absorber of CuFe2O4/MoS2 composite, which combines magnetic ferrite CuFe2O4 with 2D MoS2 nanosheets to achieve a wide effective absorption bandwidth. The cooperative interaction of dielectric and magnetic loss results in effective absorption of electromagnetic waves in the entire Kuband and part of the X-band. This work presents a strategy for obtaining novel high-performance absorbers.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Zhixin Liu et al.
Summary: The study demonstrates the construction of high-performance electromagnetic wave absorption materials using a honeycomb-like NiFe2O4@Ni@C composite, which facilitates EMW dissipation through multiple reflections and scattering, conductive loss, interfacial polarization, and ferromagnetic resonance.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Materials Science, Multidisciplinary
Jong-Hwan Park et al.
Summary: FeCo nanoparticles with varying compositions were prepared via a polyol method, affecting their magnetic and electromagnetic properties. Fe51Co49 and Fe38Co62 compositions showed high magnetic and dielectric losses, exhibiting optimal performance at specific frequencies for electromagnetic wave absorption.
MATERIALS RESEARCH BULLETIN
(2022)
Article
Nanoscience & Nanotechnology
Han Wu et al.
Summary: The study successfully achieved negative permittivity by preparing ternary percolation nanocomposites, investigating the synergy between graphene and carbon nanotubes, and controlling the formation of conductive paths to regulate negative permittivity precisely.
ADVANCED COMPOSITES AND HYBRID MATERIALS
(2022)
Article
Engineering, Environmental
Zohre Fahimi et al.
Summary: In this study, Co3V2O8 hollow spheres were synthesized as electrode materials and showed excellent performance in energy storage. A hybrid supercapacitor device using Co3V2O8, activated carbon, and KOH as positive, negative electrodes, and electrolyte achieved high energy and power densities. The aqueous supercapacitor device also exhibited good structural and electrochemical stabilities after multiple charge-discharge cycles. This work provides a platform for exploring bimetallic Co and V-based oxides, hydroxides, and sulfides nanostructures as promising energy storage materials in the future.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Yuchang Wang et al.
Summary: This study reports a multifunctional electromagnetic absorbing and electromagnetic interference shielding material using graphene-wrapped multiloculated NiFe2O4 composites. The conductive networks formed by graphene and the multiloculated structure of NiFe2O4 optimize the dielectric constant of the composites and establish a magnetic-dielectric synergy effect. The material also exhibits good electrocatalytic activity. This work provides an excellent jumping-off point for the development of multifunctional EM absorbing materials, eco-friendly EMI shielding materials, and electrocatalysts.
Article
Nanoscience & Nanotechnology
Xiao Li et al.
Summary: This study reports a carefully designed electrostatic self-assembly strategy to fabricate magnetized MXene-rGO/CoNi films, which exhibit excellent microwave absorption performance. The insertion of CoNi nanoparticles decorated rGO nanosheets into MXene layers effectively reduces the high permittivity, and the strong magnetic coupling between FeCo alloy nanoparticles enhances the magnetic loss capability.
NANO-MICRO LETTERS
(2022)
Article
Nanoscience & Nanotechnology
Hui-Min Wen et al.
Summary: In this work, hollow spindle-shaped FeNi/NiFe2O4-doped carbon composite nanorods with strong reflection loss and broad effective absorption bandwidth were successfully synthesized, exhibiting remarkable electromagnetic wave absorbing performance. This performance is mainly attributed to the synergistic effect of hierarchical pores, geometric structure, and dielectric and magnetic losses.
ACS APPLIED NANO MATERIALS
(2022)
Review
Nanoscience & Nanotechnology
Peitao Xie et al.
Summary: Dielectric constant is a physical parameter that determines the response of materials to electromagnetic waves or electrical field. Negative dielectric property, a key for constructing metamaterials, has unique electromagnetic properties. Recent advances have demonstrated the feasibility of achieving negative dielectric property in heterogeneous composites.
ADVANCED COMPOSITES AND HYBRID MATERIALS
(2022)
Article
Engineering, Electrical & Electronic
Zhengchang Xia et al.
Summary: This study utilizes polyvinyl pyrrolidone-induced carbothermal reduction to convert NiFe2O4/Fe2O3/Ni composite spheres into FeNi/Fe/C-based composites. The results show that the reduction degree increases and then decreases with the increase in polyvinyl pyrrolidone dosage, leading to changes in composition and morphology. The as-synthesized FeNi/Fe/C-based composites exhibit strong dielectric loss and magnetic loss, making them potential materials for radar evasion and reducing electromagnetic pollution.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Energy & Fuels
Yongtao Tan et al.
Summary: The graphitization degree of carbon material is crucial for supercapacitor electrode. In this study, three-dimensional high graphitic porous biomass carbon (HGPBC) was synthesized from dandelion flower stem using potassium ferrate as an activator. The obtained HGPBC showed improved conductivity and achieved high specific capacitance and energy density, indicating its potential for advanced energy storage applications.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Chemistry, Physical
Huanhuan Zhu et al.
Summary: The construction of yolk-shell composites with dielectric/magnetic multiple loss mechanisms has shown promising results in obtaining high-efficiency microwave absorbing materials. The designed and synthesized CoFe2O4@carbon and Co3Fe7/FeO@carbon composites with yolk-shell structures exhibit improved microwave absorption behaviors and wider effective absorption bandwidth.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Nanoscience & Nanotechnology
Mingxiang Liu et al.
Summary: This study investigates the frequency dispersion mechanism of negative permittivity in carbon nanotubes (CNTs)/epoxy composites. The Debye model is used to describe the dielectric relaxation when the CNT content is below the percolation threshold, while the Drude model explains the negative permittivity resulting from the plasma oscillation of free electrons in CNT networks above the percolation threshold. A novel Debye-Drude model is proposed to explain the low-frequency dispersion and weakly negative permittivity observed when the CNT content is slightly higher than the percolation threshold.
ADVANCED COMPOSITES AND HYBRID MATERIALS
(2022)
Article
Chemistry, Inorganic & Nuclear
Runjing Mao et al.
Summary: In this study, yolk-shell-structured 2D flaky Fe/void/C composites were successfully fabricated. The optimized sample exhibited excellent microwave absorption properties with a wide absorption bandwidth and strong reflection loss.
DALTON TRANSACTIONS
(2022)
Article
Materials Science, Multidisciplinary
Ran Liu et al.
Summary: Novel composite carbon-FeNi alloy-nickel ferrite hollow microspheres with a thin shell were successfully constructed through a highly efficient spray drying-calcination route in this study, demonstrating excellent microwave-absorbing properties.
JOURNAL OF MATERIALS CHEMISTRY C
(2022)
Article
Chemistry, Physical
Ruiwen Shu et al.
Summary: Nitrogen-doped reduced graphene oxide/nickel ferrite hybrid nanocomposites were synthesized by a one-pot hydrothermal method. The additive volumes of hydrazine hydrate and filler loadings significantly influenced the electromagnetic wave absorption properties, with optimal performance of 54.4 dB reflection loss and 4.5 GHz absorption bandwidth achieved.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Nanoscience & Nanotechnology
Jiabin Chen et al.
Summary: FeCo/CoFe2O4/carbon nanofiber composites were successfully prepared by electrospinning for effective electromagnetic wave attenuation, achieving a bandwidth of 5.0 GHz and an absorption peak of -52.3 dB at a thickness of 1.95 mm. Additionally, the composite coatings demonstrated significant radar cross section reduction and scattering ability to electromagnetic waves when analyzed using ANSYS Electronics Desktop 2018(HFSS).
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Inorganic & Nuclear
Wei Liu et al.
Summary: In this study, excellent microwave absorption performance was achieved at a low filling ratio of 20 wt% using Co/C particles derived from ZIF-67 and a melamine-involved annealing route. The highly graphitic CNTs benefited the formation of an electron transport network and enhanced conduction loss, while the unique one-dimensional complex structure and abundant Co/C interfaces strengthened the polarization loss. Through optimizing dielectric loss and impedance matching at different frequencies, a broad effective absorption bandwidth in Ku and X bands was realized, showcasing the potential for novel lightweight materials with wide frequency response.
DALTON TRANSACTIONS
(2021)
Article
Materials Science, Multidisciplinary
Wei Liu et al.
Summary: A new three-step method has been developed to enhance the microwave absorption properties of metal-organic framework derived materials at low thickness, achieving a broad effective absorption bandwidth and offering a novel approach for designing composite materials.
JOURNAL OF MATERIALS CHEMISTRY C
(2021)
Article
Nanoscience & Nanotechnology
Peitao Xie et al.
Summary: This study prepared Co/C nanocomposites with Co nanoparticles uniformly distributed in amorphous carbon sheets, achieving excellent absorption performance through hierarchical porous microstructures. Excellent absorption performance was achieved at 10% and 15% Co/C content levels, providing a new pathway for designing ultralight absorbers.
ADVANCED COMPOSITES AND HYBRID MATERIALS
(2021)
Article
Engineering, Environmental
Yahui Wang et al.
CHEMICAL ENGINEERING JOURNAL
(2020)
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Chemistry, Physical
Chenglong Lei et al.
JOURNAL OF ALLOYS AND COMPOUNDS
(2020)
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D. V. Phugate et al.
JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM
(2020)
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Jeotikanta Mohapatra et al.
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(2020)
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Gopal Kulkarni et al.
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(2019)
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Qinghe Liu et al.
ADVANCED MATERIALS
(2016)
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Xiao-Ling Shi et al.
APPLIED PHYSICS LETTERS
(2009)
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Haeshin Lee et al.
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RC Che et al.
ADVANCED MATERIALS
(2004)
