Design of ultralight and stable Ti3C2Tx/SiCnw hybrid aerogel with hierarchical structure and heterogeneous interface for electromagnetic wave absorption

Tang, Chen; Yang, Jinyi; Deng, Weibin; Bai, Yuhang; Han, Bowen; Xu, Zhuoli; Liu, Zhaowei; Zhao, Kang; Tang, Yufei

doi:10.1016/j.carbon.2023.118697

Carbon

2024

DOI: 10.1016/j.carbon.2023.118697

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Design of ultralight and stable Ti3C2Tx/SiCnw hybrid aerogel with hierarchical structure and heterogeneous interface for electromagnetic wave absorption

Chen Tang,

Jinyi Yang,

Weibin Deng

et al.

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Cited by 10 publications

References 45 publications

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Multifunctional Electromagnetic Responsive Porous Materials Synthesized by Freeze Casting: Principles, Progress, and Prospects

Ning,

Zeng,

Huang

et al. 2024

Adv Funct Materials

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Freeze casting is a solidification technique utilized in the fabrication of porous materials. However, the freeze casting process is quite complex, and significant challenges remain in precisely controlling the pore size and shape of porous structures. This study aims to investigate the customization of multifunctional electromagnetic wave (EMW) absorbers with 3D porous structures via freeze casting. This review initially presents the fundamental principles underlying the freeze casting technique and examines the correlation between internal and external factors during the preparation process and porosity. The emerging trends in constructing novel and intricate macroscopic structures through freeze casting are subsequently outlined. Furthermore, this review focuses on the fabrication of composites with various porous microstructures through freeze casting of low‐dimensional building blocks, and their EMW response and multifunctional properties. By regulating the internal and external influencing mechanisms of freeze casting, porous EMW absorption materials exhibit outstanding advantages such as electromagnetic property manipulation, controllable structure, high porosity, high specific surface area, lightweight, and flexibility. These features broaden their applications in electromagnetic shielding, mechanical property, radar stealth, thermal insulation and fire prevention, flexible sensors, antifreeze ability, etc. In addition, we discuss the challenges and prospects of high‐performance EMW absorbers using freeze casting techniques.

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Multifunctional Electromagnetic Responsive Porous Materials Synthesized by Freeze Casting: Principles, Progress, and Prospects

Ning,

Zeng,

Huang

et al. 2024

Adv Funct Materials

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Biomimetic Leaf‐Vein Aerogel for Electromagnetic Wave Absorption and Thermal Superinsulation

Gu,

Tian,

Zhang

et al. 2024

Small

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Electromagnetic protection in extreme environments requires materials with excellent thermal insulation capability and mechanical property to withstand severe temperature fluctuations and complex external stresses. Achieving strong electromagnetic wave absorption (EMA) while sustaining these exceptional properties remains a significant challenge. Herein, a facile approach is demonstrated to fabricate a biomimetic leaf‐vein MXene/CNTs/PI (MCP) aerogel with parallel venations through bidirectional freeze‐casting method. Due to its multi‐arch lamellar structure and parallel venations within the aerogel layers, the ultralight MCP aerogel (16.9 mg·cm−3) achieves a minimum reflection loss (RLmin) of −75.8 dB and a maximum effective absorption bandwidth (EABmax) of 7.14 GHz with an absorber content of only 2.4 wt%, which also exhibits superelasticity and structural stability over a wide temperature range from −196 to 400 °C. Moreover, this unique structure facilitates rapid heat dissipation within the layers, while significantly impeding heat transfer between adjacent layers, achieving an ultralow thermal conductivity of 15.3 mW·m−1·K−1 for thermal superinsulation. The combination of excellent EMA performance, robust structural stability, and thermal superinsulation provides a potential design scheme under extreme conditions, especially in aerospace applications.

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Ultralight MXene/rGO aerogel frames with component and structure controlled electromagnetic wave absorption by direct ink writing

Liu,

Zheng,

Hua

et al. 2024

Carbon

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Design of ultralight and stable Ti3C2Tx/SiCnw hybrid aerogel with hierarchical structure and heterogeneous interface for electromagnetic wave absorption

Cited by 10 publications

References 45 publications

Multifunctional Electromagnetic Responsive Porous Materials Synthesized by Freeze Casting: Principles, Progress, and Prospects

Multifunctional Electromagnetic Responsive Porous Materials Synthesized by Freeze Casting: Principles, Progress, and Prospects

Biomimetic Leaf‐Vein Aerogel for Electromagnetic Wave Absorption and Thermal Superinsulation

Ultralight MXene/rGO aerogel frames with component and structure controlled electromagnetic wave absorption by direct ink writing

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