Metal sulfides based composites as promising efficient microwave absorption materials: A review

Li, Bin; Wang, Fenglong; Wang, Kejun; Qiao, Jing; Xu, Dongmei; Yang, Yuguo; Zhang, Xue; Lyu, Longfei; Liu, Wei; Liu, Jiurong

doi:10.1016/j.jmst.2021.06.065

Cited by 119 publications

(21 citation statements)

References 121 publications

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“…Usually, attenuation constant ( α ) and impedance matching have a decisive impact on MA capability. The α denotes the dissipation capacity of EMWs, which is described as follows [ 51 – 53 ]. …”

Section: Resultsmentioning

confidence: 99%

Ultrabroad Microwave Absorption Ability and Infrared Stealth Property of Nano-Micro CuS@rGO Lightweight Aerogels

et al. 2022

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Developing ultrabroad radar-infrared compatible stealth materials has turned into a research hotspot, which is still a problem to be solved. Herein, the copper sulfide wrapped by reduced graphene oxide to obtain three-dimensional (3D) porous network composite aerogels (CuS@rGO) were synthesized via thermal reduction ways (hydrothermal, ascorbic acid reduction) and freeze-drying strategy. It was discovered that the phase components (rGO and CuS phases) and micro/nano structure (microporous and nanosheet) were well-modified by modulating the additive amounts of CuS and changing the reduction ways, which resulted in the variation of the pore structure, defects, complex permittivity, microwave absorption, radar cross section (RCS) reduction value and infrared (IR) emissivity. Notably, the obtained CuS@rGO aerogels with a single dielectric loss type can achieve an ultrabroad bandwidth of 8.44 GHz at 2.8 mm with the low filler content of 6 wt% by a hydrothermal method. Besides, the composite aerogel via the ascorbic acid reduction realizes the minimum reflection loss (RLmin) of − 60.3 dB with the lower filler content of 2 wt%. The RCS reduction value can reach 53.3 dB m2, which effectively reduces the probability of the target being detected by the radar detector. Furthermore, the laminated porous architecture and multicomponent endowed composite aerogels with thermal insulation and IR stealth versatility. Thus, this work offers a facile method to design and develop porous rGO-based composite aerogel absorbers with radar-IR compatible stealth.

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Section: Resultsmentioning

confidence: 99%

Ultrabroad Microwave Absorption Ability and Infrared Stealth Property of Nano-Micro CuS@rGO Lightweight Aerogels

et al. 2022

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“…Electromagnetic parameters were measured by a vector network analyzer (making annular samples with a paraffin ratio of 1:1 with a thickness of 2 mm, outer diameter of 7 mm, inner diameter of 3 mm, and thickness of 2 mm). The absorbing performance of materials with different thicknesses was determined by the reflected loss value, which can be calculated according to the transmission line theory and eqs and , as follows: , RL ( d B ) = 20 0.25em lg | false( Z in − 1 false) false( Z in + 1 false) | Z in false( μ normalr / ε normalr false) 1 / 2 tan nobreak0em.25em⁡ h [ j false( 2 π f d / c false) ( ε r μ r ) 1 / 2 ] where Z 0 is the impedance of air, Z in is the normalized input impedance, c is the light velocity (m·s –1 ), d is the absorber thickness (m), f is the frequency (Hz), and ε r and μ r are the relative complex permittivity and permeability of the absorber, respectively. For the repeatable performances of the samples, we have tested each sample for at least two times and the performances are nearly the same, implying that the microwave absorption performance of the composite can be repeatable.…”

Section: Methodsmentioning

confidence: 99%

Co/CoO/Lotus Seedpod Nanoporous Carbon Composites Reduced from Co₃O₄ for High-Performance Microwave Absorbers

Qin

Kimura

et al. 2023

ACS Appl. Nano Mater.

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To obtain microwave-absorbing materials with high absorptivity, broad bandwidth, and lightweight properties, Co 3 O 4 / lotus seedpod carbon (Co 3 O 4 /LSC) composites were reduced under a hydrogen pressure of 3 MPa. As the reduction temperature increases, the phases of the Co 3 O 4 /LSC composites change from Co 3 O 4 to CoO/Co. At 200 °C (named as the 3200 nanocomposite), partial Co 3 O 4 changes to CoO, the Co 3 O 4 completely transfers into CoO with a little Co detectable at 300 °C (3300 nanocomposite), and the concentration of Co increases more than that of the 3300 nanocomposite once temperature is raised to 400 °C (3400 nanocomposite). Moreover, the morphology of the Co 3 O 4 /LSC composites changes from irregular particles to a sintering state in the reduction process. When 3200, 3300, and 3400 nanocomposites are compared, the 3400 nanocomposite exhibits the highest permittivity and best microwave absorption performance: the 3400 nanocomposite exhibits a strong reflection loss of −60.63 dB (2.0 mm, 18.0 GHz) and an absorption bandwidth of 14.10 GHz (4.7 mm, 3.9−18.0 GHz). The hydrogenated LSC/Co 3 O 4 nanocomposite has a strong absorption capacity and wide effective bandwidth, is lightweight, and can be used as a high-performance biomass-based microwave-absorbing material.

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“…Electromagnetic (EM) pollution has become a matter of general concern in the modern society, and concerted research efforts have been devoted to developing novel microwave absorption materials (MAMs) with main merits, including lightweight, strong absorption, broad frequency band, and thin thickness . According to their intrinsic properties and EM loss mechanisms, MAMs can generally be divided into two main types: dielectric loss absorbers (e.g., carbonaceous materials, conducting polymers, and dielectric ceramics) and magnetic loss absorbers (e.g., magnetic metals/alloys and their oxides) . In order to achieve a balanced impedance matching and a strong EM attenuation capability, most of the advanced MAMs reported recently involved the use of dual-loss composite materials containing dielectric and magnetic components .…”

Section: Introductionmentioning

confidence: 99%

“…1 According to their intrinsic properties and EM loss mechanisms, MAMs can generally be divided into two main types: dielectric loss absorbers (e.g., carbonaceous materials, conducting polymers, and dielectric ceramics) and magnetic loss absorbers (e.g., magnetic metals/alloys and their oxides). 2 In order to achieve a balanced impedance matching and a strong EM attenuation capability, most of the advanced MAMs reported recently involved the use of dual-loss composite materials containing dielectric and magnetic components. 3 Apart from chemical composition optimization, engineering nanostructures is also proven to be another effective strategy to improve the absorption performance.…”

Section: Introductionmentioning

confidence: 99%

Ti₃C₂T_X MXene Nanosheets Decorated with Magnetic Co Nanoparticles and CoO Nanosheets for Microwave Absorption

Zhang

et al. 2022

ACS Appl. Nano Mater.

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As a recently emerging 2D material, Ti3C2T X MXene, with some distinct characters, might bring opportunities for developing advanced microwave absorption materials (MAMs). Although the multilayered MXene with an accordion-like structure has been used as the building blocks to obtain composite MAMs, the exfoliated MXene (eMXene) nanosheets have rarely been explored. Herein, we construct a hierarchically structured MXene-based composite by simultaneously decorating magnetic nanosheets/particles onto eMXene sheets for an efficient microwave absorption. Systematic ex situ characterizations reveal that the eMXene sheets can act as a structure-directing agent and host to allow an interlaced growth of ultrathin CoO nanosheets and spherical Co@C nanoparticles onto their surfaces. Such structural design impedes the agglomeration of eMXene sheets and magnetic nanounits while guaranteeing the adequate exposure of polar functional groups on MXene surfaces. Meanwhile, the introduction of dual magnetic phases enables an additional magnetic loss capability and also builds massive void spaces and rich heterointerfaces between various nanounits for a significantly enhanced dielectric polarization loss, resulting in a superior impedance matching and attenuation capability. Accordingly, the optimal composite exhibits a minimum reflection loss of −73.4 dB at a thin thickness of 2.1 mm and an effective absorption bandwidth up to 5.6 GHz (12.4–18.0 GHz) at a thin thickness of 1.8 mm. This study might stimulate the further development of exfoliated MXene-based composite microwave absorbers with hierarchical structures.

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Metal sulfides based composites as promising efficient microwave absorption materials: A review

Cited by 119 publications

References 121 publications

Ultrabroad Microwave Absorption Ability and Infrared Stealth Property of Nano-Micro CuS@rGO Lightweight Aerogels

Ultrabroad Microwave Absorption Ability and Infrared Stealth Property of Nano-Micro CuS@rGO Lightweight Aerogels

Co/CoO/Lotus Seedpod Nanoporous Carbon Composites Reduced from Co₃O₄ for High-Performance Microwave Absorbers

Ti₃C₂T_X MXene Nanosheets Decorated with Magnetic Co Nanoparticles and CoO Nanosheets for Microwave Absorption

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Metal sulfides based composites as promising efficient microwave absorption materials: A review

Cited by 119 publications

References 121 publications

Ultrabroad Microwave Absorption Ability and Infrared Stealth Property of Nano-Micro CuS@rGO Lightweight Aerogels

Ultrabroad Microwave Absorption Ability and Infrared Stealth Property of Nano-Micro CuS@rGO Lightweight Aerogels

Co/CoO/Lotus Seedpod Nanoporous Carbon Composites Reduced from Co3O4 for High-Performance Microwave Absorbers

Ti3C2TX MXene Nanosheets Decorated with Magnetic Co Nanoparticles and CoO Nanosheets for Microwave Absorption

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Co/CoO/Lotus Seedpod Nanoporous Carbon Composites Reduced from Co₃O₄ for High-Performance Microwave Absorbers

Ti₃C₂T_X MXene Nanosheets Decorated with Magnetic Co Nanoparticles and CoO Nanosheets for Microwave Absorption