S-NiSe/HG Nanocomposites with Balanced Dielectric Loss Encapsulated in Room-Temperature Self-Healing Polyurethane for Microwave Absorption and Corrosion Protection

Zhang, Yunfei; Zhang, Lei; Tang, Lingfeng; Du, Ran; Zhang, Baoliang

doi:10.1021/acsnano.3c13057

Cited by 33 publications

(1 citation statement)

References 44 publications

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“…In the contemporary era, electromagnetic (EM) technology is undergoing continuous development and finds widespread applications in both military and civilian domains, including military radar, portable electronics, wireless communication, and more [ 1 – 3 ]. While EM technology provides substantial convenience, it also gives rise to electromagnetic interference and radiation, posing risks to people's wellness [ 4 – 6 ], and impacting the regular operation of electronic devices.…”

Section: Introductionmentioning

confidence: 99%

Designing Symmetric Gradient Honeycomb Structures with Carbon-Coated Iron-Based Composites for High-Efficiency Microwave Absorption

Zhang,

Yang,

Xin

et al. 2024

Nano-Micro Lett.

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The impedance matching of absorbers is a vital factor affecting their microwave absorption (MA) properties. In this work, we controllably synthesized Material of Institute Lavoisier 88C (MIL-88C) with varying aspect ratios (AR) as a precursor by regulating oil bath conditions, followed by one-step thermal decomposition to obtain carbon-coated iron-based composites. Modifying the precursor MIL-88C (Fe) preparation conditions, such as the molar ratio between metal ions and organic ligands (M/O), oil bath temperature, and oil bath time, influenced the phases, graphitization degree, and AR of the derivatives, enabling low filler loading, achieving well-matched impedance, and ensuring outstanding MA properties. The MOF-derivatives 2 (MD2)/polyvinylidene Difluoride (PVDF), MD3/PVDF, and MD4/PVDF absorbers all exhibited excellent MA properties with optimal filler loadings below 20 wt% and as low as 5 wt%. The MD2/PVDF (5 wt%) achieved a maximum effective absorption bandwidth (EAB) of 5.52 GHz (1.90 mm). The MD3/PVDF (10 wt%) possessed a minimum reflection loss (RLmin) value of − 67.4 at 12.56 GHz (2.13 mm). A symmetric gradient honeycomb structure (SGHS) was constructed utilizing the high-frequency structure simulator (HFSS) to further extend the EAB, achieving an EAB of 14.6 GHz and a RLmin of − 59.0 dB. This research offers a viable inspiration to creating structures or materials with high-efficiency MA properties.

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Section: Introductionmentioning

confidence: 99%

Designing Symmetric Gradient Honeycomb Structures with Carbon-Coated Iron-Based Composites for High-Efficiency Microwave Absorption

Zhang,

Yang,

Xin

et al. 2024

Nano-Micro Lett.

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Molecular Intercalation‐Induced Two‐Phase Evolution Engineering of 1T and 2H‐MS₂(M = Mo, V, W) for Interface‐Polarization‐Enhanced Electromagnetic Absorbers

Jia,

Liu,

Gao

et al. 2024

Adv Funct Materials

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Polarization at interfaces is an important loss mechanism for electromagnetic wave (EMW) attenuation, though the motion behavior of carriers in interfaces composed of different types of conductors has yet to be investigated. Tuning the phase structure of transition metal dichalcogenides (TMDs) MS2 (M = Mo, V, W) by organics small molecule intercalation to achieve the modulation of interfacial types is an effective strategy, where 1T‐MS2 exhibits metallic properties and 2H‐MS2 has semiconducting properties. To exclude the contribution of the intrinsic properties of TMDs materials, three TMDs (MoS2, VS2, and WS2), which also possess phase transitions, are investigated. Among them, the 1T‐MS2 composite exhibits excellent EMW absorption performance under the synergistic effect of interfacial polarization and conduction loss. 1T‐MoS2/MOF‐A exhibits the best EMW absorption performance with an RLmin of −61.07 dB at a thickness of 3.0 mm and an EAB of 7.2 GHz at 2.3 mm. The effectiveness of the modulation of the interfacial polarization using 1T‐phase and 2H‐phase MS2 is demonstrated, which is important for the analysis of the carrier motion behavior during the interfacial loss.

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Schottky Interface Engineering in Ti₃C₂T_x/ZnS Organic Hydrogels for High‐Performance Multifunctional Flexible Absorbers

Cui,

Ru,

Zhang

et al. 2024

Adv Funct Materials

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With the rapid advancement of wearable electronics, soft robotics, and camouflage technologies, there is an urgent demand for flexible, multifunctional electromagnetic wave absorbing materials. Traditional absorbers, including metal‐ and carbon‐based materials, often lack the flexibility required for such applications. In this work, a novel strategy is proposed for developing a flexible absorber by combining a conductive filler with a Schottky heterogeneous interface and a polymer network framework. Ti3C2Tx MXene is modified with ZnS via a low‐temperature hydrothermal method, forming a Ti3C2Tx/ZnS composite. This composite is subsequently embedded in a copolymer matrix of polyvinyl alcohol (PVA) and acrylamide (AAm), dispersed in a binary water‐glycerol solution. The Schottky interface between Ti3C2Tx and ZnS enhances electron transfer at the heterophase boundary, significantly improving interface polarisation. Simultaneously, interactions between water and glycerol restrict the rotation of polar molecules under external electromagnetic fields, optimising polarisation loss within the gel. Experimental results demonstrate that the Ti3C2Tx/ZnS gel achieves a minimum reflection loss (RLmin) of −43.76 dB at 8.79 GHz, with an effective absorption bandwidth (EAB) covering the entire X‐band. Additionally, the gel exhibit exceptional stretchability, frost resistance, shape adaptability, and photothermal conversion properties.

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S-NiSe/HG Nanocomposites with Balanced Dielectric Loss Encapsulated in Room-Temperature Self-Healing Polyurethane for Microwave Absorption and Corrosion Protection

Cited by 33 publications

References 44 publications

Designing Symmetric Gradient Honeycomb Structures with Carbon-Coated Iron-Based Composites for High-Efficiency Microwave Absorption

Designing Symmetric Gradient Honeycomb Structures with Carbon-Coated Iron-Based Composites for High-Efficiency Microwave Absorption

Molecular Intercalation‐Induced Two‐Phase Evolution Engineering of 1T and 2H‐MS₂(M = Mo, V, W) for Interface‐Polarization‐Enhanced Electromagnetic Absorbers

Schottky Interface Engineering in Ti₃C₂T_x/ZnS Organic Hydrogels for High‐Performance Multifunctional Flexible Absorbers

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S-NiSe/HG Nanocomposites with Balanced Dielectric Loss Encapsulated in Room-Temperature Self-Healing Polyurethane for Microwave Absorption and Corrosion Protection

Cited by 33 publications

References 44 publications

Designing Symmetric Gradient Honeycomb Structures with Carbon-Coated Iron-Based Composites for High-Efficiency Microwave Absorption

Designing Symmetric Gradient Honeycomb Structures with Carbon-Coated Iron-Based Composites for High-Efficiency Microwave Absorption

Molecular Intercalation‐Induced Two‐Phase Evolution Engineering of 1T and 2H‐MS2(M = Mo, V, W) for Interface‐Polarization‐Enhanced Electromagnetic Absorbers

Schottky Interface Engineering in Ti3C2Tx/ZnS Organic Hydrogels for High‐Performance Multifunctional Flexible Absorbers

Contact Info

Product

Resources

About

Molecular Intercalation‐Induced Two‐Phase Evolution Engineering of 1T and 2H‐MS₂(M = Mo, V, W) for Interface‐Polarization‐Enhanced Electromagnetic Absorbers

Schottky Interface Engineering in Ti₃C₂T_x/ZnS Organic Hydrogels for High‐Performance Multifunctional Flexible Absorbers