Asymmetric electromagnetic shielding performance based on spatially controlled deposition of nickel nanoparticles on carbon nanotube sponge

Zhang, Jiapeng; Zhu, Dejun; Zhang, Sheng; Cheng, Hsin-Pai; Chen, Shuanglu; Tang, Rujun; Hang, Zhi Hong; Zhang, Tianhui; Zhang, Xiaohua; Yang, Zhaohui

doi:10.1016/j.carbon.2022.04.012

Cited by 29 publications

(4 citation statements)

References 40 publications

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“…9–11 Conductive polymer composites comprised of polymers and carbon nanofillers ( e.g. , carbon nanotubes, 12 carbon nanofibers, 13 and graphene 14,15 ), magnetic fillers (Fe 3 O 4 , 9,16 Co 3 O 4 , 17 nickel 18 ), and dielectric fillers (silicon carbide, 14 TiO 2 , SiO 2 19,20 ) have been developed to replace metals in EMI shielding applications due to their low cost, easy processing ability, light weight, corrosion resistance, and good environmental stability. 21–24 However, inadequate EMI shielding capability, poor mechanical properties, and high conductivity limit the utilization of conductive polymer composites.…”

Section: Introductionmentioning

confidence: 99%

Progress of high performance Ti₃C₂T_xMXene nanocomposite films for electromagnetic interference shielding

Cen

Xiong

et al. 2023

Nanoscale

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Section: Introductionmentioning

confidence: 99%

Progress of high performance Ti₃C₂T_xMXene nanocomposite films for electromagnetic interference shielding

Cen

Xiong

et al. 2023

Nanoscale

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“…Unfortunately, this issue will become even more significant with the rapid iteration of electronic information technology. − Therefore, developing electromagnetic interference (EMI) shielding materials with high flexibility and functional integrity is crucial to meet urgent shielding needs. Several conductive materials, such as carbon materials (graphene and carbon nanotubes), − metal nanowires, , and two-dimensional transition metal carbides and/or nitrides (MXenes), − have been widely used for EMI shielding. For example, Wang et al fabricated a 14.1 μm-thick MXene/amarid nanofiber nanocomposite paper exhibiting an excellent EMI shielding efficiency (SE) of 48 dB.…”

Section: Introductionmentioning

confidence: 99%

Multifunctional Flexible AgNW/MXene/PDMS Composite Films for Efficient Electromagnetic Interference Shielding and Strain Sensing

Bian,

Yang,

Zhang

et al. 2023

ACS Appl. Mater. Interfaces

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With the rapid development of electronic information technology, composite materials with outstanding performance in terms of electromagnetic interference (EMI) shielding and strain sensing are crucial for nextgeneration smart wearable electronic devices. However, the fabrication of flexible composite films with dual functionality remains a significant challenge. Herein, multifunctional flexible composite films with exciting EMI shielding and strain sensing properties were constructed using a facile vacuum-assisted filtration process and transfer method. The films consisted of ultrathin AgNW/MXene (Ti 3 C 2 T x )/AgNW conductive networks (1 μm) attached to a flexible polydimethylsiloxane (PDMS) substrate. The obtained AgNW/MXene/PDMS composite film exhibited an exceptional EMI shielding effectiveness of 50.82 dB and good flexibility (retaining 93.67 and 90.18% of its original value after 1000 bending and stretching cycles, respectively), which are attributed to the enhanced multilayer internal reflection network created by the AgNWs and MXene as well as the synergistic effect of PDMS. Besides EMI shielding, the composite films also displayed remarkable strain sensing properties. They exhibited a wide linear range of tensile strain up to 68% with a gauge factor of 468. They also showed fast response, ultralow detection limit, and high mechanical stability. Interestingly, the composite films could also detect motion and voice recognition, demonstrating their potential as wearable sensors. This study highlights the effectiveness of multifunctional flexible AgNW/MXene/PDMS composite films in resisting electromagnetic radiation and monitoring human motion, thereby providing a promising solution for the development of flexible wearable electronic devices in complex electromagnetic environments.

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“…When the content of CB reached 50 wt %, the SET values in the X- The layered structure is a design to achieve efficient electromagnetic shielding performance, in which the asymmetric layered structure establishes a low-conductivity matching layer in contact with the incident electromagnetic waves, ensuring that most of the electromagnetic waves entering the material are reflected when in contact with a solid reflector in the highly conductive layer. 25,26 Electromagnetic waves are reflected multiple times between layers, significantly improving their absorption and EMI performance. 27 Jia et al 28 fabricated a composite material with an asymmetric gradient structure composed of a stack of different MXene-loaded expanded beads, which achieved an SE value of 22.7 dB and reflectivity of as low as 0.05.…”

Section: Introductionmentioning

confidence: 99%

Efficient Electromagnetic Interference Shielding of PPA6@NiM/PDMS Composites with Porous and Asymmetric Gradient Structures

Zhu

et al. 2023

ACS Appl. Polym. Mater.

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In this work, magnetic PA6 microspheres (PPA6@ NiM) with porous structures were prepared using the solvent coprecipitation method and electroless nickel plating technology, and the stacked magnetic microspheres were encapsulated with polydimethylsiloxane (PDMS) to obtain PPA6@NiM/PDMS composites. The existence of the porous structure increases the attenuation path of the electromagnetic wave, and the presence of the nickel layer improves the magnetic loss of the composite material to the electromagnetic wave and synergistically improves the absorption of the electromagnetic wave. Among them, the total shielding effectiveness (SET) of the PPA6@NiM4/PDMS composite is as high as 39.9 dB, and the reflection coefficient (R) is 0.83. To further increase the absorption effect of the composite material, an asymmetric gradient structure was constructed by utilizing the difference in electrical conductivity between the magnetic microspheres. The electromagnetic wave is incident from the surface with lower conductivity (impedance matching layer). It is reflected by the consistency with higher conductivity (strong reflective layer) than the bottom layer to increase the loss of electromagnetic waves inside the material. The composite SET constructed with M1 and M4 particles with the most significant difference in conductivity achieved 35.5 dB with an absorption coefficient (A) of 0.42. It shows that the porous combined asymmetric gradient structure we designed can effectively improve the shielding efficiency and absorption capacity of the composite material against electromagnetic microwaves and serve as a reference for creating high-absorbing and high-performance electromagnetic shielding materials.

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Asymmetric electromagnetic shielding performance based on spatially controlled deposition of nickel nanoparticles on carbon nanotube sponge

Cited by 29 publications

References 40 publications

Progress of high performance Ti₃C₂T_xMXene nanocomposite films for electromagnetic interference shielding

Progress of high performance Ti₃C₂T_xMXene nanocomposite films for electromagnetic interference shielding

Multifunctional Flexible AgNW/MXene/PDMS Composite Films for Efficient Electromagnetic Interference Shielding and Strain Sensing

Efficient Electromagnetic Interference Shielding of PPA6@NiM/PDMS Composites with Porous and Asymmetric Gradient Structures

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Asymmetric electromagnetic shielding performance based on spatially controlled deposition of nickel nanoparticles on carbon nanotube sponge

Cited by 29 publications

References 40 publications

Progress of high performance Ti3C2TxMXene nanocomposite films for electromagnetic interference shielding

Progress of high performance Ti3C2TxMXene nanocomposite films for electromagnetic interference shielding

Multifunctional Flexible AgNW/MXene/PDMS Composite Films for Efficient Electromagnetic Interference Shielding and Strain Sensing

Efficient Electromagnetic Interference Shielding of PPA6@NiM/PDMS Composites with Porous and Asymmetric Gradient Structures

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Product

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Progress of high performance Ti₃C₂T_xMXene nanocomposite films for electromagnetic interference shielding

Progress of high performance Ti₃C₂T_xMXene nanocomposite films for electromagnetic interference shielding