Sandwich-structural Ni/Fe3O4/Ni/cellulose paper with a honeycomb surface for improved absorption performance of electromagnetic interference

Liu, Ruoting; Li, Tingting; Xu, Jin; Zhang, Tongcheng; Xie, Yanjun; Li, Jian; Wang, Limin

doi:10.1016/j.carbpol.2021.117840

Cited by 40 publications

(6 citation statements)

References 36 publications

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“…Ni/Fe 3 O 4 /Ni/cellulose paper by constructing a sandwich structure composed of a dense nickel coating, Fe 3 O 4 nanoparticles, and a porous nickel layer. [131] As the Fe 3 O 4 absorption time increases, the EMI SE increases, which is due to the synergy between the porous Ni layer and Fe 3 O 4 nanoparticles. And the highest SE value of the samples reaches up to 41.88 dB.…”

Section: Cellulose Composite Papers For Emi Shieldingmentioning

confidence: 97%

Recent Progress in the Application of Cellulose in Electromagnetic Interference Shielding Materials

Zhao

Zhang

et al. 2022

Macro Materials & Eng

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Excessive electromagnetic radiation produced by widely used electronic equipment not only harms human health but also affects the accuracy of precision instruments. To meet the growing demand for electromagnetic interference (EMI) shielding materials, various novel materials are investigated. As a natural biopolymer, cellulose possesses the merits of biodegradability, thermal stability, easy processability, and low cost. Owing to tremendous advantages, cellulose can be used as a substrate, binder, and derived carbon material for EMI shielding materials. Although many research papers on EMI shielding materials containing cellulose have been published, a detailed summary on them has not been acknowledged yet. Hence, this review is composed mainly to cover the structure and properties of cellulose, as well as electromagnetic shielding theory, which are explained in detail by using various research articles, review papers, and book chapters. And the recent applications of cellulose in EMI shielding materials are highlighted. It is hoped that the information gathered from previous studies can provide a reference for the fabrication of cellulose composites with higher EMI shielding performance in future research.

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Section: Cellulose Composite Papers For Emi Shieldingmentioning

confidence: 97%

Recent Progress in the Application of Cellulose in Electromagnetic Interference Shielding Materials

Zhao

Zhang

et al. 2022

Macro Materials & Eng

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“…In order to overcome this crucial problem, the development of efficient and low-cost EM wave-protecting materials is in high demand. In recent years, numerous studies have been conducted on developing materials to shield unwanted EM radiation, ranging from metals to petroleum-based conductive polymers. − However, because of their high conductivity and, thus, impedance mismatches, such materials reflect a major portion of incident waves, resulting in secondary environmental electromagnetic pollution. − …”

Section: Introductionmentioning

confidence: 99%

Surfactant-Mediated Highly Conductive Cellulosic Inks for High-Resolution 3D Printing of Robust and Structured Electromagnetic Interference Shielding Aerogels

Amini,

Hosseini,

Dutta

et al. 2023

ACS Appl. Mater. Interfaces

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Technological fusion of emerging three-dimensional (3D) printing of aerogels with gel processing enables the fabrication of lightweight and functional materials for diverse applications. However, 3D-printed constructs via direct ink writing for fabricating electrically conductive structured biobased aerogels suffer several limitations, including poor electrical conductivity, inferior mechanical strength, and low printing resolution. This work addresses these limitations via molecular engineering of conductive hydrogels. The hydrogel inks, namely, CNC/PEDOT-DBSA, featured a unique formulation containing well-dispersed cellulose nanocrystal decorated by a poly(3,4-ethylene dioxythiophene) (PEDOT) domain combined with dodecylbenzene sulfonic acid (DBSA). The rheological properties were precisely engineered by manipulating the solid content and the intermolecular interactions among the constituents, resulting in 3D-printed structures with excellent resolution. More importantly, the resultant aerogels following freeze-drying exhibited a high electrical conductivity (110 ± 12 S m–1), outstanding mechanical properties (Young’s modulus of 6.98 MPa), and fire-resistance properties. These robust aerogels were employed to address pressing global concerns about electromagnetic pollution with a specific shielding effectiveness of 4983.4 dB cm2 g–1. Importantly, it was shown that the shielding mechanism of the 3D printed aerogels could be manipulated by their geometrical features, unraveling the undeniable role of additive manufacturing in materials design.

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“…Therefore, more and more researchers have assembled some nanomaterials into three-dimensional free-standing porous materials with an ingenious microstructure that can highly efficiently adsorb and dissipate EM waves . Most previous works indicate that the adsorption performance will be enhanced by building a multilayer or open cellular structure and restricting the reflection loss. − For instance, silver/reduced graphene oxide-coated carbonized-melamine foams have a high adsorption coefficient of shielding because of their porous skeleton and multiple interfaces . The EMI SE of the wood-templated hierarchically cellular NbC/pyrolytic carbon foam can reach 54.8 dB when the thickness is 0.5 mm .…”

Section: Introductionmentioning

confidence: 99%

Graphite Nanosheet-Based Carbon Foams for Electromagnetic Interference Shielding

Huang

Kuga

et al. 2022

ACS Appl. Nano Mater.

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Fabrication of low-cost, lightweight, and flexible materials with high performance for electromagnetic interference (EMI) shielding is a great challenge in practical application. Alleviating “secondary pollution” by improving adsorption loss is of great significance to preventing electronic instruments from EMI and protecting human health. In this paper, a three-dimensional porous carbon foam (PCF) with low density (0.089 g/cm–3), high conductivity (1.5 × 105 S/m), high flexibility, and excellent shielding effectiveness (SE) was fabricated by immersing the expanded graphite(ene) film (EGF) into liquid nitrogen followed by the evaporation treatment. The SE of the PCF was about 137 dB at 0.03–1 GHz at a thickness of 2.8 mm, and the adsorption loss (SEA) can be up to as high as 122 dB. The excellent SE of the PCF is mainly attributed to the rich cellular porous structure, which leads to electromagnetic wave energy eventually being converted into heat energy inside the PCF by adsorption loss and dissipation. Furthermore, the PCF exhibits excellent performance of thermal discharge such that the temperature drops from 203 to 38 °C within 15 s. This research will provide an effective path to obtain a lightweight and flexible EMI shielding material that can reduce secondary pollution of electromagnetic radiation.

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Sandwich-structural Ni/Fe3O4/Ni/cellulose paper with a honeycomb surface for improved absorption performance of electromagnetic interference

Cited by 40 publications

References 36 publications

Recent Progress in the Application of Cellulose in Electromagnetic Interference Shielding Materials

Recent Progress in the Application of Cellulose in Electromagnetic Interference Shielding Materials

Surfactant-Mediated Highly Conductive Cellulosic Inks for High-Resolution 3D Printing of Robust and Structured Electromagnetic Interference Shielding Aerogels

Graphite Nanosheet-Based Carbon Foams for Electromagnetic Interference Shielding

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