Flexible MOF on CoXFe1-XOOH@Biomass derived Alloy@Carbon films for efficient electromagnetic interference shielding and energy conversion

Bai, Wenhao; Zhai, Jianyu; Zhou, Shengguo; Cui, Ce; Wang, Weijie; Jiang, Shun-Yuan; Cheng, Cheng; Ren, Erhui; Xiao, Hongyan; Zhou, Mi; Zhang, Jinwei; Guo, Ronghui

doi:10.1016/j.carbon.2022.07.059

Cited by 14 publications

(2 citation statements)

References 63 publications

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“…Additionally, Li et al [ 45 ] fabricated carbon fabric-NiCo composites, and it was observed that a carbon fabric-NiCo 2 O 4 composite, having a thickness of 0.34 mm, resulted in an EMI SE of 53 dB. Further, Thi et al [ 46 ] researched flexible MOF on Co X Fe 1− X OOH@carbon films for sufficient EMI shielding, and it was observed that the EMI SE of CoFe/CoCu-carbon films (MOF growing for 45 min) was 73.46 dB. Lastly, Park et al [ 19 ] investigated the EMI SE of carbon papers obtained from blending tall goldenrod celluloses and carbon nanotubes (CNTs), and it was reported that cellulose carbon paper containing 15 wt% CNTs with a thickness of 4.5 mm, carbonized at 1300 °C, showed an EMI SE of 62 dB at 1.6 GHz.…”

Section: Resultsmentioning

confidence: 99%

Electromagnetic-Interference-Shielding Effectiveness of Lyocell-Based Carbon Fabrics Carbonized at Various Temperatures

et al. 2022

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Lyocell is a biodegradable filament yarn obtained by directly dissolving cellulose in a mixture of N-methylmorpholine-N-oxide and a non-toxic solvent. Therefore, herein, lyocell fabrics were employed as eco-friendly carbon-precursor substitutes for use as electromagnetic interference (EMI) shielding materials. First, a lyocell fabric treated with polyacrylamide via electron beam irradiation reported in a previous study to increase carbon yields and tensile strengths was carbonized by heating to 900, 1100, and 1300 °C. The carbonization transformed the fabric into a graphitic crystalline structure, and its electrical conductivity and EMI shielding effectiveness (SE) were enhanced despite the absence of metals. For a single sheet, the electrical conductivities of the lyocell-based carbon fabric samples at the different carbonization temperatures were 3.57, 5.96, and 8.91 S m−1, leading to an EMI SE of approximately 18, 35, and 82 dB at 1.5–3.0 GHz, respectively. For three sheets of fabric carbonized at 1300 °C, the electrical conductivity was 10.80 S m−1, resulting in an excellent EMI SE of approximately 105 dB. Generally, EM radiation is reduced by 99.9999% in instances when the EMI SE was over 60 dB. The EMI SE of the three lyocell-based carbon fabric sheets obtained at 1100 °C and that of all the sheets of the sample obtained at 1300 °C exceeded approximately 60 dB.

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Section: Resultsmentioning

confidence: 99%

Electromagnetic-Interference-Shielding Effectiveness of Lyocell-Based Carbon Fabrics Carbonized at Various Temperatures

et al. 2022

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“…The integration of carbon materials and magnetic materials has become a well-regarded strategy to efficaciously alleviate the impedance mismatching and enrich EMW attenuation patterns by dielectric–magnetic coupling effects. ,− Among numerous magnetic materials, metal–organic framework (MOF) derivatives have been confirmed to be an ideal choice for magnetic components due to their merits of low density, regular morphologies, porous structure, and strong magnetic loss capacity. − A large number of research studies have demonstrated that combining magnetic MOF derivatives and carbon materials could effectively enhance EMW absorption. ,, For instance, Fei et al fabricated an aerogel by a facile carbonization strategy. The resultant carbon nanofiber@Co/C aerogel reveals an absorption coefficient as high as 0.79 .…”

Section: Introductionmentioning

confidence: 99%

MOF-Derived Co/C and MXene co-Decorated Cellulose-Derived Hybrid Carbon Aerogel with a Multi-Interface Architecture toward Absorption-Dominated Ultra-Efficient Electromagnetic Interference Shielding

Guo

Ren

Yang

et al. 2023

ACS Appl. Mater. Interfaces

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Exploring electromagnetic interference (EMI) shielding materials with ultra-efficient EMI shielding effectiveness (SE) and an absorption-dominated mechanism is urgently required for fundamentally tackling EMI radiation pollution. Herein, zeolitic imidazolate framework-67 (ZIF-67)/MXene/cellulose aerogels were first prepared via a simple solution mixing-regeneration and freeze-drying process. Subsequently, they are converted into electric/magnetic hybrid carbon aerogels (Co/ C/MXene/cellulose-derived carbon aerogels) through a facile pyrolysis strategy. ZIF-67-derived porous Co/C could provide the additional magnetic loss capacity. The resultant electric/magnetic hybrid carbon aerogels exhibit a hierarchically porous structure, complementary electromagnetic waves (EMWs) loss mechanisms, and abundant heterointerfaces. The construction of a porous architecture and the synergy of electric/magnetic loss could greatly alleviate the impedance mismatching at the air−specimen interface, which enables more EMWs to enter into the materials for consumption. Moreover, numerous heterointerfaces among Co/C, Ti 3 C 2 T x MXene, and cellulose-derived carbon skeleton induce the generation of multiple polarization losses containing interfacial and dipole polarization, which further dissipate the EMWs. The resultant electric/magnetic hybrid carbon aerogel with a low density (85.6 mg/cm 3 ) achieves an ultrahigh EMI SE of 86.7 dB and a superior absorption coefficient of 0.72 simultaneously. This work not only offers a novel approach to design high-performance EMI shielding materials entailing low reflection characteristic but also broadens the applicability of electric/magnetic hybrid carbon aerogels in aerospace, precision electronic devices, and military stealth instruments.

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Building of lightweight Nb2CTx MXene@Co nitrogen-doped carbon nanosheet arrays@carbon fiber aerogels for high-efficiency electromagnetic wave absorption in X and Ku bands inspired by sea cucumber

Yan,

Cui,

Bai

et al. 2024

Nano Res.

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Flexible MOF on CoXFe1-XOOH@Biomass derived Alloy@Carbon films for efficient electromagnetic interference shielding and energy conversion

Cited by 14 publications

References 63 publications

Electromagnetic-Interference-Shielding Effectiveness of Lyocell-Based Carbon Fabrics Carbonized at Various Temperatures

Electromagnetic-Interference-Shielding Effectiveness of Lyocell-Based Carbon Fabrics Carbonized at Various Temperatures

MOF-Derived Co/C and MXene co-Decorated Cellulose-Derived Hybrid Carbon Aerogel with a Multi-Interface Architecture toward Absorption-Dominated Ultra-Efficient Electromagnetic Interference Shielding

Building of lightweight Nb2CTx MXene@Co nitrogen-doped carbon nanosheet arrays@carbon fiber aerogels for high-efficiency electromagnetic wave absorption in X and Ku bands inspired by sea cucumber

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