Ultrathin nitrogen-doping graphene films for flexible and stretchable EMI shielding materials

Lin, Shaofeng; Ju, Sheng; Shi, Gang; Zhang, Jianwei; He, Yonglyu; Jiang, Dazhi

doi:10.1007/s10853-019-03372-4

Cited by 58 publications

(40 citation statements)

References 58 publications

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“…Flexible and stretchable EMI shielding materials are fundamental for the implementation of conductive and flexible devices. [45][46][47][48][65][66][67] Indeed, a large-scale diffusion of flexible electronics is impossible if an electronics apparatus cannot maintain a negligible interference between its electrical components when deformed. [46,47] For this reason, the EMI shielding effectiveness of the conductive elastomer was tested depending on the amount of nanofillers employed (Figure 3), and before and after repeated stretch-release cycles ( Figure 5).…”

Section: Emi Shielding Of the Deformable Conductorsmentioning

confidence: 99%

Graphene–Polyurethane Coatings for Deformable Conductors and Electromagnetic Interference Shielding

Cataldi

Papageorgiou

Pinter

et al. 2020

Adv Elect Materials

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Electrically conductive, polymeric materials that maintain their conductivity even when under significant mechanical deformation are needed for actuator electrodes, conformable electromagnetic shielding, stretchable tactile sensors, and flexible energy storage. The challenge for these materials is that the percolated, electrically conductive networks tend to separate even at low strains, leading to significant piezoresistance. Herein, deformable conductors are fabricated by spray‐coating a nitrile substrate with a graphene–elastomer solution. The electrical resistance of the coatings shows a decrease after thousands of bending cycles and a slight increase after repeated folding‐unfolding events. The deformable conductors double their electrical resistance at 12% strain and are washable without changing their electrical properties. The conductivity–strain behavior is modeled by considering the nanofiller separation upon deformation. To boost the conductivity at higher strains, the production process is adapted by stretching the nitrile substrate before spraying, after which it is released. This adaption meant that the electrical resistance doubles at 25% strain. The electrical resistance is found sufficiently low to give a 1.9 dB µm−1 shielding in the 8–12 GHz electromagnetic band. The physical and electrical properties, including the electro magnetic screening, of the flexible conductors, are found to deteriorate upon cycling but can be recovered through reheating the coating.

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Section: Emi Shielding Of the Deformable Conductorsmentioning

confidence: 99%

Graphene–Polyurethane Coatings for Deformable Conductors and Electromagnetic Interference Shielding

Cataldi

Papageorgiou

Pinter

et al. 2020

Adv Elect Materials

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“…In addition, Lin et al. [ 147 ] found that the conductivity of NG films (8796 S cm –1 ) was comparable to that of reduced graphene oxide film (10 600 S cm –1 ), while graphene oxide film is non‐conductive. Therefore, the electrical conductivity of NG still has an advantage compared with other materials.…”

Section: Advantages Of Ng In Photocatalysismentioning

confidence: 99%

Design, Fabrication, and Mechanism of Nitrogen‐Doped Graphene‐Based Photocatalyst

et al. 2021

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Solving energy and environmental problems through solar‐driven photocatalysis is an attractive and challenging topic. Hence, various types of photocatalysts have been developed successively to address the demands of photocatalysis. Graphene‐based materials have elicited considerable attention since the discovery of graphene. As a derivative of graphene, nitrogen‐doped graphene (NG) particularly stands out. Nitrogen atoms can break the undifferentiated structure of graphene and open the bandgap while endowing graphene with an uneven electron density distribution. Therefore, NG retains nearly all the advantages of original graphene and is equipped with several novel properties, ensuring infinite possibilities for NG‐based photocatalysis. This review introduces the atomic and band structures of NG, summarizes in situ and ex situ synthesis methods, highlights the mechanism and advantages of NG in photocatalysis, and outlines its applications in different photocatalysis directions (primarily hydrogen production, CO2 reduction, pollutant degradation, and as photoactive ingredient). Lastly, the central challenges and possible improvements of NG‐based photocatalysis in the future are presented. This study is expected to learn from the past and achieve progress toward the future for NG‐based photocatalysis.

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“…Lin et al 43 fabricated ultrathin nitrogen-doped graphene film by vacuum filtration followed by compression moulding. Thus, obtained graphene films were modified using ethylenediamine (EDA).…”

Section: Materials Advances Accepted Manuscriptmentioning

confidence: 99%

The journey of PDMS-based nanocomposites for EMI shielding applications: from bench to translational research

Sharma

Bose

2021

Mater. Adv.

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Ultrathin nitrogen-doping graphene films for flexible and stretchable EMI shielding materials

Cited by 58 publications

References 58 publications

Graphene–Polyurethane Coatings for Deformable Conductors and Electromagnetic Interference Shielding

Graphene–Polyurethane Coatings for Deformable Conductors and Electromagnetic Interference Shielding

Design, Fabrication, and Mechanism of Nitrogen‐Doped Graphene‐Based Photocatalyst

The journey of PDMS-based nanocomposites for EMI shielding applications: from bench to translational research

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