Building 3D Architecture in 2D Thin Film for Effective EMI Shielding

Shen, Xi; Kim, Jang Kyo

doi:10.1016/j.matt.2019.09.007

Cited by 15 publications

(5 citation statements)

References 10 publications

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“…By constructing 3D conductive networks among the conductive fillers within the polymer matrix, polymer‐based EMI shielding composites with light weight, outstanding conductivity, excellent EMI shielding performances, and outstanding mechanical properties can be prepared with a pretty low loading of conductive fillers. The preparation methods of polymer‐based EMI shielding composites mainly include the template method, freeze‐drying method, hydrothermal method, and foaming method 23–27 …”

Section: Preparation Methods Of Polymer‐based Emi Shielding Materials With 3d Conductive Networkmentioning

confidence: 99%

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Polymer‐based EMI shielding composites with 3D conductive networks: A mini‐review

Wang

Zhang

et al. 2021

SusMat

264

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High‐frequency electromagnetic waves and electronic products can bring great convenience to people's life, but lead to a series of electromagnetic interference (EMI) problems, such as great potential dangers to the normal operation of electronic components and human safety. Therefore, the research of EMI shielding materials has attracted extensive attention by the scholars. Among them, polymer‐based EMI shielding materials with light weight, high specific strength, and stable properties have become the current mainstream. The construction of 3D conductive networks has proved to be an effective method for the preparation of polymer‐based EMI shielding materials with excellent shielding effectiveness (SE). In this paper, the shielding mechanism of polymer‐based EMI shielding materials with 3D conductive networks is briefly introduced, with emphasis on the preparation methods and latest research progress of polymer‐based EMI shielding materials with different 3D conductive networks. The key scientific and technical problems to be solved in the field of polymer‐based EMI shielding materials are also put forward. Finally, the development trend and application prospects of polymer‐based EMI shielding materials are prospected.

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Section: Preparation Methods Of Polymer‐based Emi Shielding Materials With 3d Conductive Networkmentioning

confidence: 99%

“…The preparation methods of polymer-based EMI shielding compos-ites mainly include the template method, freeze-drying method, hydrothermal method, and foaming method. [23][24][25][26][27]…”

Section: Preparation Methods Of Polymer-based Emi Shielding Materials With 3d Conductive Networkmentioning

confidence: 99%

Polymer‐based EMI shielding composites with 3D conductive networks: A mini‐review

Wang

Zhang

et al. 2021

SusMat

264

View full text Add to dashboard Cite

show abstract

“…Porous graphene film has the advantages of improving impedance matching and increasing the transmission path of EM waves due to its internal porosity, leading to the further attenuation of EM waves. [ 165 ] The Gao group reported multilayered graphene aerogel films (GAFs) with an expansion enhancement effect prepared by bar casting together with a high‐temperature expansion treatment at 3000 °C. [ 166 ] The expansion along the thickness direction increased the lamination spacing between graphene laminates, further improving the shielding performance.…”

Section: Applications Of Graphene‐based Materials For Electromagnetic...mentioning

confidence: 99%

A Review on Graphene‐Based Electromagnetic Functional Materials: Electromagnetic Wave Shielding and Absorption

Xia

Gao

2022

Adv Funct Materials

315

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Electromagnetic (EM) functional materials play an increasingly important role in solving EM wave pollution in both modern military and civil fields. Graphene‐based materials are the most promising candidates in the applications of EM wave shielding and absorption owing to their remarkable structures and enhanced EM properties. Designing graphene‐based materials with elaborately controlled microstructures and optimized EM properties can effectively improve EM energy attenuation and conversion. Herein, the study begins with the EM attenuation mechanism, and multiscale design strategies of graphene‐based EM functional materials are outlined, including molecular‐scale, micro/nanoscale structure, macroscale structure, and integration of multiscale assembly design strategies. Applications in the EM wave shielding and absorption fields are reviewed, focusing on the latest advances in graphene‐based assemblies such as films, fabrics, and composites. Finally, the current challenges and future directions in this fast‐growing field are predicted.

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“…High densities of 3D structures mean small pore sizes, which in turn translate into high filler loadings when infiltrated with polymers and thus high thermal conductivities of composites. For the template-directed CVD method, high-density templates were used to achieve high densities of graphene or BN 3D structures [8,68,[96][97][98]. For example, BNFs were grown on high-density carbon monolith templates using B 2 O 3 as precursor, as shown in figure 3(a) [68].…”

Section: Tuning the Density And Pore Sizementioning

confidence: 99%

3D graphene and boron nitride structures for nanocomposites with tailored thermal conductivities: recent advances and perspectives

Shen

Kim

2020

Funct. Compos. Struct.

Self Cite

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Various three-dimensional (3D) structures are rationally assembled from two-dimensional (2D) nanosheets of graphene and boron nitride (BN) for thermal energy regulating applications. The nanocomposites containing these 3D architectures offer thermal conductivities spanning a few orders of magnitude from ultralow values for super thermal insulation to high values for fast heat dissipation. In this review, we summarize the approaches developed to achieve two extremes of thermal conductivity in 3D graphene and BN assemblies by engineering their structures at different length scales. A special focus is placed on identifying key structural parameters affecting the thermal conductivities, including pore morphologies, pore sizes, and cell wall structures. Distinctive applications of 3D graphene and BN structures and their polymer-based composites for thermal energy management are highlighted along with their potential multifunctionalities other than thermal conduction or insulation. The in-depth understanding of thermal transport properties offer insight into designing novel 3D structures that possess desired thermal conductivities for emerging thermal management applications.

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Building 3D Architecture in 2D Thin Film for Effective EMI Shielding

Cited by 15 publications

References 10 publications

Polymer‐based EMI shielding composites with 3D conductive networks: A mini‐review

Polymer‐based EMI shielding composites with 3D conductive networks: A mini‐review

A Review on Graphene‐Based Electromagnetic Functional Materials: Electromagnetic Wave Shielding and Absorption

3D graphene and boron nitride structures for nanocomposites with tailored thermal conductivities: recent advances and perspectives

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