Heterogeneous Cu9S5/C nanocomposite fibers with adjustable electromagnetic parameters for efficient electromagnetic absorption

Wu, Simeng; Qiao, Jing; Tang, Yunxiang; Zhang, Xue; Meng, Xiangwei; Hao, Shuyan; Tian, Haoyuan; Li, Baoding; Zuo, Xiaoyang; Liu, Jiurong; Wu, Lili; Wang, Zhou; Wang, Fenglong

doi:10.1016/j.jcis.2022.10.075

Cited by 27 publications

(5 citation statements)

References 40 publications

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“…At the same time, the TCBF-7 sample showed an RL min of −41.1 dB at a thickness of 2.0 mm, which is greatly better than CBF and current similar absorbers (Figures S12 and S13). ,− …”

Section: Results and Discussionmentioning

confidence: 99%

Electronic Modulation Strategy for Mass-Producible Ultrastrong Multifunctional Biomass-Based Fiber Aerogel Devices: Interfacial Bridging

Guan,

Tan,

Wang

et al. 2023

ACS Nano

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The emergence of green flexible aerogel electronics based on natural materials is expected to solve part of the global environmental and energy crisis. However, it is still challenging to achieve large-scale production and multifunctional stable applications of natural biomass fiber aerogel (BFA) materials. Herein, we exploit the interfacial bridging between the flower-type titanium dioxide nanoarray (FTNA) and natural fiber substrates to modulate the electronic structure and loss mechanism to achieve multifunctional properties. Specifically, the fibrous substrate with wrinkled features induces lattice strain in titania through precise interfacial bridging, effectively improving the intrinsic properties of the BFA materials. This interfacial bridging regulation strategy is also confirmed by X-ray absorption fine structure spectroscopy (XAS). More importantly, the construction of BFA products for different macroscopic and multifunctional applications through simple processing methods will facilitate the transition from natural materials to multifunctional flexible electronics. Therefore, the as-prepared blanket-type BFA (TCBFA) has good mechanical properties, electromagnetic protection properties, thermal stealth properties, high-temperature flame retardancy, and UV resistance. Meanwhile, the membrane-type (TCBFAM) multifunctional wearable fiber aerogel device exhibits superior flexibility, efficient Joule heating performance, and a smart response. This regulation strategy provides another concept for the design and innovation of green multifunctional fiber-integrated aerogels.

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“…At the same time, the TCBF-7 sample showed an RL min of −41.1 dB at a thickness of 2.0 mm, which is greatly better than CBF and current similar absorbers (Figures S12 and S13). ,− …”

Section: Results and Discussionmentioning

confidence: 99%

Electronic Modulation Strategy for Mass-Producible Ultrastrong Multifunctional Biomass-Based Fiber Aerogel Devices: Interfacial Bridging

Guan,

Tan,

Wang

et al. 2023

ACS Nano

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“…17 Besides, the inferior compatibility between copper and carbon results in the attachment statement of Cu particles instead of forming embedded or encapsulated structures with carbon. 18,19 This T h i s c o n t e n t i s precisely intercepts the advantages of Cu graphitization catalysis and the induction of interfacial polarization. Thus, managing the size, dispersion, and stability of the load particles from a morphological perspective is essential to achieve an effective EMW absorption performance.…”

Section: ■ Introductionmentioning

confidence: 95%

Activating Excellent Electromagnetic Wave Absorption of Micromorphology-Optimized Cu/C Nanocomposite Fibers via a Metal–Organic Framework Template-Assisted Strategy

Wu,

Jiang,

Wang

et al. 2024

ACS Appl. Mater. Interfaces

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Morphological engineering is crucial for conceiving high-efficiency electromagnetic wave (EMW) absorption materials. However, for carbon fiber-based composites, the management of micromorphology is significantly astricted by complex fabrication. It remains highly challenging to clarify the micromorphological influences on the EMW loss mechanism of carbon fiber-based absorption materials. In this work, micromorphology-optimized Cu/C nanocomposite fibers are prepared by virtue of a metal–organic framework (MOF) template-assisted strategy. Through skillfully grafting the morphology-regulation capacity of MOFs onto composite fibers, the Oswald maturation and particle distribution issues of Cu nanoparticles are settled, and the efficient electron transport pathways are established by the bead-like structure of the fiber matrix. Compared to prepared conventional Cu/C nanocomposite fibers, the MOF template-assisted strategy stimulates a remarkable leap in EMW absorption performance. The minimum reflection loss value of Cu/C-40 can reach −64.5 dB, 15.96 times lower than that of a conventional sample (Cu/C-2). The maximum effective absorption bandwidth extends to 6.08 GHz, contrasting the ineffective performance of Cu/C-2. Systematic research demonstrates that the enabled graphite-catalytic function of Cu nanoparticles collaborated with an optimized conductive network structure plays a pivotal role in creating field-induced leakage currents, facilitating conductive loss, the primary contributor to EMW dissipation. This work establishes a correlation mechanism between micromorphology and EMW loss, presenting a compelling example of customizable carbon fiber-based absorbers.

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“…1,2 However, it has also inherently resulted in electromagnetic wave (EMW) pollution. 3,4 To safeguard the electronic equipment from electromagnetic interference (EMI), electromagnetic materials are attracting more attention in electronics and manufacturing. 5−7 Compared to their metal counterparts, conductive aerogels that contain conductive fillers and cell structures are becoming the new standard for EMI shields with high performance due to their lower density, chemical resistance to corrosion, and machinability.…”

Section: ■ Introductionmentioning

confidence: 99%

“…The increased utilization of electronic devices, such as signal transmission base stations and wireless devices, has brought considerable convenience to the process of social. , However, it has also inherently resulted in electromagnetic wave (EMW) pollution. , To safeguard the electronic equipment from electromagnetic interference (EMI), electromagnetic materials are attracting more attention in electronics and manufacturing. − Compared to their metal counterparts, conductive aerogels that contain conductive fillers and cell structures are becoming the new standard for EMI shields with high performance due to their lower density, chemical resistance to corrosion, and machinability. − However, most of them are based on petrochemical materials. Notably, biomass aerogels prepared from sustainable base material substrates have been widely concerned because of its easy modification and high biological activity. − …”

Section: Introductionmentioning

confidence: 99%

Ultralight Flexible Collagen Fiber Based Aerogels Derived from Leather Solid Waste for High Electromagnetic Interference Shielding

Lyu,

Guo,

Gao

et al. 2024

Langmuir

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Designing and developing high-performance shielding materials against electromagnetic interference is of utmost importance due to the rapid advancement of wireless telecommunication technologies. Such materials hold both fundamental and technological significance. A threestage process is presented for creating ultralight, flexible aerogels from biomass to shield against electromagnetic interference. Collagen fibers sourced from leather solid waste are used for: (i) freeze-drying preparation of collagen fibers/poly(vinyl alcohol) (PVA) aerogels, (ii) adsorption of silver nanowires (AgNWs) onto collagen fiber/PVA aerogels, and (iii) Hydrophobic modification of collagen fiber/PVA/AgNWs aerogels with 1H, 1H, 2H, 2H-perfluorodecyltriethoxysilane (POTS). Scanning electron microscopy studies reveal that an interweaving of AgNWs and collagen fiber/PVA porous network has formed a conductive network, exhibiting an electrical conductivity of 10 3 S•m −1 . The electromagnetic interference shielding effectiveness reached more than 62 dB, while the density was merely 5.8 mg/cm 3 . The collagen fiber/PVA/AgNWs/POTS aerogel displayed an even better electromagnetic shielding efficiency of 73 dB and water contact angle of 147°. The study results emphasize the distinctive capacity of leather solid waste to generate cost-effective, ecofriendly, and highly efficient electromagnetic interference shielding materials.

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Heterogeneous Cu9S5/C nanocomposite fibers with adjustable electromagnetic parameters for efficient electromagnetic absorption

Cited by 27 publications

References 40 publications

Electronic Modulation Strategy for Mass-Producible Ultrastrong Multifunctional Biomass-Based Fiber Aerogel Devices: Interfacial Bridging

Electronic Modulation Strategy for Mass-Producible Ultrastrong Multifunctional Biomass-Based Fiber Aerogel Devices: Interfacial Bridging

Activating Excellent Electromagnetic Wave Absorption of Micromorphology-Optimized Cu/C Nanocomposite Fibers via a Metal–Organic Framework Template-Assisted Strategy

Ultralight Flexible Collagen Fiber Based Aerogels Derived from Leather Solid Waste for High Electromagnetic Interference Shielding

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