Carbon-based aerogels and foams for electromagnetic interference shielding: A review

Wang, Yueyi; Zhang, Feng; Li, Nan; Shi, Jun-Feng; Jia, Li‐Chuan; Yan, Ding‐Xiang; Li, Zhong‐Ming

doi:10.1016/j.carbon.2023.01.007

Cited by 94 publications

(38 citation statements)

References 234 publications

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“…This skin prevented the breakup of the aqueous jet into droplets and suppressed Plateau–Rayleigh instabilities. [ 8–28 ]…”

Section: Resultsmentioning

confidence: 99%

“…[ 1,3 ] Moreover, the considerable fabrication costs and the extensive amount of nanomaterials required for these EMI shields must be substantially reduced before they can be viable for wide‐scale applications. [ 1,12 ]…”

Section: Introductionmentioning

confidence: 99%

“…This is achieved through conductive porous structures filled with polymers such as epoxy and polydimethylsiloxane (PDMS), creating stable EMI shields. [ 8–16 ]…”

Section: Introductionmentioning

confidence: 99%

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Ultra‐Flyweight Cryogels of MXene/Graphene Oxide for Electromagnetic Interference Shielding

Ghaffarkhah

Hashemi

Rostami

et al. 2023

Adv Funct Materials

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MXene and graphene cryogels have demonstrated excellent electromagnetic interference (EMI) shielding effectiveness due to their exceptional electrical conductivity, low density, and ability to dissipate electromagnetic waves through numerous internal interfaces. However, their synthesis demands costly reduction techniques and/or pre‐processing methods such as freeze‐casting to achieve high EMI shielding and mechanical performance. Furthermore, limited research has been conducted on optimizing the cryogel microstructures and porosity to enhance EMI shielding effectiveness while reducing materials consumption. Herein, a novel approach to produce ultra‐lightweight cryogels composed of Ti3C2Tx/graphene oxide (GO) displaying multiscale porosity is presented to enable high‐performance EMI shielding. This method uses controllable templating through the interfacial assembly of filamentous‐structured liquids that are readily converted into EMI cryogels. The obtained ultra‐flyweight cryogels (3–7 mg cm−3) exhibit outstanding specific EMI shielding effectiveness (33 000–50 000 dB cm2 g−1) while eliminating the need for chemical or thermal reduction. Furthermore, exceptional shielding is achieved when the Ti3C2Tx/GO cryogels are used as the backbone of conductive epoxy nanocomposites, yielding EMI shielding effectiveness of 31.7–51.4 dB at a low filler loading (0.3–0.7 wt%). Overall, a one‐of‐a‐kind EMI shielding system is introduced that is readily processed while affording scalability and performance.

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“…This skin prevented the breakup of the aqueous jet into droplets and suppressed Plateau–Rayleigh instabilities. [ 8–28 ]…”

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Ultra‐Flyweight Cryogels of MXene/Graphene Oxide for Electromagnetic Interference Shielding

Ghaffarkhah

Hashemi

Rostami

et al. 2023

Adv Funct Materials

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“…Consequently, safeguards against X-band wave are gaining prominence. Electromagnetic interference (EMI) shielding materials, including carbon aerogels, , metallic materials, composite foams, , polymeric composites, − and cementitious composites, are booming. These materials possess high electrical conductivity, which plays a critical role to achieve high EMI shielding effectiveness (SE). − Moreover, the topological structure can significantly affect the materials’ EMI SE, for example, the gradient and/or sandwich structures were demonstrated to enhance the effectiveness by facilitating multiple reflections between parallel reflective planes. ,,, …”

Section: Introductionmentioning

confidence: 99%

Carbonized Syndiotactic Polystyrene/Carbon Nanotube/MXene Hybrid Aerogels with Egg-Box Structure: A Platform for Electromagnetic Interference Shielding and Solar Thermal Energy Management

Gui,

Zhao,

Zuo

et al. 2023

ACS Appl. Mater. Interfaces

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Functional materials for electromagnetic interference (EMI) shielding are a consistently hot topic in the booming communication engineering, proceeding the development that tends to the multifunctional EMI shielding materials. Herein, a series of carbonized syndiotactic polystyrene/carbon nanotube/ MXene (CsPS/CNT/MXene) hybrid aerogels were fabricated for EMI shielding and solar thermal energy conversion purposes. To fabricate the hybrid aerogels, a porous CNT/MXene framework was initially prepared using freeze-casting. Subsequently, sPS was infused into the porous structure, followed by hyper-cross-linking and carbonization of sPS under an inert atmosphere. The resulting aerogels exhibited a distinctive egg-box structure, comprising numerous nanofibrous carbon microspheres embedded within the lamellar framework. The mass ratio between CNT and MXene was regulated to identify an optimum aerogel, that is, the CCM-4-6, which exhibited impressive properties including Young's compression modulus of 0.67 MPa, a water contact angle of 137.6 ± 4.1°, a specific surface area of 110 m 2 g −1 , an electrical conductivity of 43.0 S m −1 , and an EMI SE value of 40 dB. Meanwhile, phase-change composites were fabricated through encapsulating paraffin wax within the hybrid aerogels. For the CCM-4-6 aerogel, a noteworthy encapsulation ratio was achieved at about 76.7%, along with remarkable latent heat, good thermal reliability, and commendable solar thermal energy conversion capacity. This study presents a facile route to prepare multifunctional EMI shielding materials.

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“…Aerogels are known as a kind of three-dimensional nanoporous structural solid material with low density, high porosity and a large specific surface area [ 12 , 13 ], making them excellent adsorbents for removing dyes and heavy metal ions. However, traditional particle aerogels are composed of a brittle granule skeleton with poor structural continuity, leading to low structural strength and poor mechanical stability [ 14 ].…”

Section: Introductionmentioning

confidence: 99%

Fabrication of EVOH/PANI Composite Nanofibrous Aerogels for the Removal of Dyes and Heavy Metal Ions

Jun-shan

Song

2023

Materials

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Water pollution caused by the leakage and discharge of pollutants, such as dyes and heavy metal ions, can cause serious damage to the environment and human health. Therefore, it is important to design and develop adsorbent materials that are efficient and multifunctional for the removal of these pollutants. In this work, poly(vinyl alcohol-co-ethylene) (EVOH)/polyaniline (PANI) composite nanofibrous aerogels (NFAs) were fabricated via solution oxidation and blending. The aerogels were characterized by a scanning electron microscope, Fourier transform infrared spectrometry, a contact angle measuring instrument and a universal testing machine. The influences of the introduction of PANI nanorods on the structural properties of aerogels were investigated, and the adsorption performance of aerogels was also studied. The results showed that the introduction of PANI nanorods filled the fibrous network structure, reduced porosity, increased surface hydrophilicity and improved compressive strength. Furthermore, EVOH/PANI composite NFAs possess good adsorption performances for dyes and heavy metal ions: The adsorption capacities of methyl orange and chromium ions (VI) are 73.22 mg/g and 115.54 mg/g, respectively. Overall, the research suggests that EVOH/PANI NFAs have great potential as efficient and multifunctional adsorbent materials for the removal of pollutants from water.

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Carbon-based aerogels and foams for electromagnetic interference shielding: A review

Cited by 94 publications

References 234 publications

Ultra‐Flyweight Cryogels of MXene/Graphene Oxide for Electromagnetic Interference Shielding

Ultra‐Flyweight Cryogels of MXene/Graphene Oxide for Electromagnetic Interference Shielding

Carbonized Syndiotactic Polystyrene/Carbon Nanotube/MXene Hybrid Aerogels with Egg-Box Structure: A Platform for Electromagnetic Interference Shielding and Solar Thermal Energy Management

Fabrication of EVOH/PANI Composite Nanofibrous Aerogels for the Removal of Dyes and Heavy Metal Ions

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