Metal carbide/Ni hybrids for high-performance electromagnetic absorption and absorption-based electromagnetic interference shielding

Xie, Qindong; Yan, Zhiyang; Qin, Fangfang; Wang, Le; Mei, Lin; Zhang, Yan-Pei; Wang, Zhongke; Zhao, Guangtao; Jiang, Ruibin

doi:10.1039/d0qi00687d

Cited by 39 publications

(18 citation statements)

References 68 publications

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“…Efforts to exploit efficient EMI shielding materials have been focused on plating conductive coatings on insulating substrates, filling conductive particles into the insulating substrates, or using solid metals. − Among these methods, plating or coating metal nanoparticles (NPs) on the substrate surfaces have attracted wide attention due to their high shielding efficiency, good toughness, and scalable production. It is generally recognized that improving the electronic conductivity of materials could optimize their EMI shielding efficiencies.…”

Section: Introductionmentioning

confidence: 99%

Tensile Stress-Gated Electromagnetic Interference Shielding Fabrics with Real-Time Adjustable Shielding Efficiency

Xia

Wei

Tang

et al. 2021

ACS Sustainable Chem. Eng.

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Traditional electromagnetic interference (EMI) shielding films generally have constant shielding efficiencies that cannot respond to the real-time changing shielding requirements of smart wearable electronics. Here, we report a stress-gated EMI shielding fabric with a high elastic strain of 470% that exhibits variable shielding performance by stretching the fabric to different deformations. The fabric is fabricated through electroless plating Cu nanoparticles on the electrospun polyurethane nanofiber films, which can change from conducting to insulating when the stretch deformation reaches 50% and then back to conducting as the stress is released. The deformation causes repeated separation and contact of Cu nanoparticles on the surfaces of polyurethane nanofibers, resulting in a reversible transition between conducting and insulating. The fabric with tensile stress-gated conductivity can capture and weaken electromagnetic waves through absorption, reflection, and scattering, which shows real-time changing EMI shielding efficiencies from 0 to 52.31 dB. More importantly, the developed method of electroless plating for the deposition of continuous metal nanoparticles on elastic polyurethane nanofibers is new and scalable, which shows broad application prospects in smart EMI shielding fields.

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Section: Introductionmentioning

confidence: 99%

Tensile Stress-Gated Electromagnetic Interference Shielding Fabrics with Real-Time Adjustable Shielding Efficiency

Xia

Wei

Tang

et al. 2021

ACS Sustainable Chem. Eng.

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“…For example, metals have excellent EMI SE but are not transparent and hardly to satisfy the flexible requirement. [ 13 ] Conducting polymers can have very good transparency and flexibility, but their transparency is lost when high EMI SE is achieved. [ 12,14 ] Films fabricated with high electrical conductivity nanomaterials can realize relatively high electrical conductivity with small loading amounts, [ 15–17 ] and thereby have the potential to simultaneously meet the transparency, flexibility, and high EMI SE.…”

Section: Introductionmentioning

confidence: 99%

Transparent, Flexible, and Stable Polyethersulfone/Copper‐Nanowires/Polyethylene Terephthalate Sandwich‐Structured Films for High‐Performance Electromagnetic Interference Shielding

et al. 2021

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Transparent and flexible electromagnetic interference (EMI) shielding materials are highly desirable in wearable electronic devices and optical windows of aircrafts. Herein, transparent and flexible EMI shielding films are prepared by the use of Cu nanowires (Cu NWs). The films have a sandwiched structure composed of polyethersulfone (PES), Cu NW network, and polyethylene terephthalate (PET). The coating of PES strengthens the Cu NW contact, protects Cu NWs from the oxidation, and reduces the surface average roughness. The PES/Cu NWs/PET sandwich‐structured films show an EMI shielding effectiveness (SE) of 22 dB with an optical transmittance of 73%, and an even higher EMI SE of 30 dB in the entire X band with the optical transmittance of 67%. The PES/Cu NWs/PET sandwich‐structured films also exhibit superior flexibility, very good chemical stability in basic, acidic, and strong oxidizing solutions, as well as long‐term stability in ambient condition. This PES/Cu NWs/PET sandwich‐structured films are a promising transparent flexible EMI shielding material in wearable electronics and optical windows of aircrafts.

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“…When SE T is more than 15 dB, SE M can be ignored. 69 Fig. 9a–c depict the EMI shielding properties of Co 1.29 Ni 1.71 O 4 /rGO/CF composite foams with different Co 1.29 Ni 1.71 O 4 /rGO ratios in the whole testing frequency range.…”

Section: Resultsmentioning

confidence: 99%

A novel multi-dimensional structure of graphene-decorated composite foam for excellent stealth performance in microwave and infrared frequency bands

et al. 2022

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Metal carbide/Ni hybrids for high-performance electromagnetic absorption and absorption-based electromagnetic interference shielding

Abstract: Electromagnetic absorption and electromagnetic interference (EMI) shielding materials, especially absorption-based EMI shielding materials, are urgently desired to eliminate increasingly serious electromagnetic radiation pollution. MXenes exhibit great promising to realize excellent...

Cited by 39 publications

References 68 publications

Tensile Stress-Gated Electromagnetic Interference Shielding Fabrics with Real-Time Adjustable Shielding Efficiency

Tensile Stress-Gated Electromagnetic Interference Shielding Fabrics with Real-Time Adjustable Shielding Efficiency

Transparent, Flexible, and Stable Polyethersulfone/Copper‐Nanowires/Polyethylene Terephthalate Sandwich‐Structured Films for High‐Performance Electromagnetic Interference Shielding

A novel multi-dimensional structure of graphene-decorated composite foam for excellent stealth performance in microwave and infrared frequency bands

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