Hollow engineering of sandwich NC@Co/NC@MnO2 composites toward strong wideband electromagnetic wave attenuation

Journal of Material Science and Technology, Год журнала: 2023, Номер 175, С. 194 - 203

Опубликована: Сен. 6, 2023

Язык: Английский

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Construction of Self-Assembly Based Tunable Absorber: Lightweight, Hydrophobic and Self-Cleaning Properties

Nano-Micro Letters, Год журнала: 2023, Номер 15(1)

Опубликована: Май 28, 2023

Although multifunctional aerogels are expected to be used in applications such as portable electronic devices, it is still a great challenge confer multifunctionality while maintaining their inherent microstructure. Herein, simple method proposed prepare NiCo/C with excellent electromagnetic wave absorption properties, superhydrophobicity, and self-cleaning by water-induced NiCo-MOF self-assembly. Specifically, the impedance matching of three-dimensional (3D) structure interfacial polarization provided CoNi/C well defect-induced dipole primary contributors broadband absorption. As result, prepared have width 6.22 GHz at 1.9 mm. Due presence hydrophobic functional groups, improve stability humid environments obtain hydrophobicity large contact angles > 140°. This aerogel has promising absorption, resistance water or environments.

Язык: Английский

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"Three-in-One" Multi-Scale Structural Design of Carbon Fiber-Based Composites for Personal Electromagnetic Protection and Thermal Management

Nano-Micro Letters, Год журнала: 2023, Номер 15(1)

Опубликована: Июль 10, 2023

Wearable devices with efficient thermal management and electromagnetic interference (EMI) shielding are highly desirable for improving human comfort safety. Herein, a multifunctional wearable carbon fibers (CF) @ polyaniline (PANI) / silver nanowires (Ag NWs) composites "branch-trunk" interlocked micro/nanostructure were achieved through "three-in-one" multi-scale design. The reasonable assembly of the three kinds one-dimensional (1D) materials can fully exert their excellent properties i.e., superior flexibility CF, robustness PANI, splendid conductivity AgNWs. Consequently, constructed flexible composite demonstrates enhanced mechanical tensile stress 1.2 MPa, which was almost 6 times that original material. This is mainly attributed to fact PNAI (branch) firmly attached CF (trunk) polydopamine (PDA), forming robust structure. Meanwhile, possesses insulation heat preservation capacity owing synergistically low emissivity. More importantly, conductive path established by 1D greatly improved its EMI property Joule heating performance at applied voltage. work paves way rational utilization intrinsic materials, as well provides promising strategy designing protection energy devices.

Язык: Английский

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Impact mechanisms of aggregation state regulation strategies on the microwave absorption properties of flexible polyaniline

Journal of Colloid and Interface Science, Год журнала: 2023, Номер 651, С. 494 - 503

Опубликована: Авг. 7, 2023

Язык: Английский

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Synthesis of nitrogen-doped reduced graphene oxide/magnesium ferrite/polyaniline composite aerogel as a lightweight, broadband and efficient microwave absorber

Journal of Material Science and Technology, Год журнала: 2023, Номер 175, С. 115 - 124

Опубликована: Сен. 11, 2023

Язык: Английский

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Interface Engineering of Heterogeneous NiSe₂‐CoSe₂@C@MoSe₂ for High‐Efficient Electromagnetic Wave Absorption

Advanced Functional Materials, Год журнала: 2023, Номер 34(9)

Опубликована: Ноя. 14, 2023

Abstract Optimization of components and micromorphology regulation are shown to be effective in boosting electromagnetic wave absorption (EMWA). One approach achieve this enhancement is by utilizing the polarization effects heterogeneous interfaces. Herein, NiSe 2 ‐CoSe @C@MoSe composites derived from NiCo‐MOF‐74 fabricated via a facile selenization reaction subsequent hydrothermal method. By varying mass ratios @C MoSe , series with hierarchical flower‐like core–shell structures obtained. The EMWA properties display trend initially increasing then decreasing content . Interestingly, when ratio 3:2, minimum reflection loss (RL) value −50.10 dB an bandwidth (RL< −10 dB) can reach 4.80 GHz (13.20–18.00 GHz). remarkable capability ascribed synergy conductive loss, suitable impedance matching. This work establishes new pathway for synthesis transition metal dichalcogenides‐based composites, which hold great promise as high‐performance materials applications.

Язык: Английский

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Perspectives of nitrogen-doped carbons for electromagnetic wave absorption

Carbon, Год журнала: 2024, Номер 221, С. 118925 - 118925

Опубликована: Фев. 10, 2024

Язык: Английский

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Multifunctional cellular carbon foams derived from chitosan toward self-cleaning, thermal insulation, and highly efficient microwave absorption properties

Nano Research, Год журнала: 2023, Номер 17(3), С. 927 - 938

Опубликована: Ноя. 30, 2023

Язык: Английский

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Dual strategy of A-site ion substitution and self-assembled MoS2 wrapping to boost permittivity for reinforced microwave absorption performance

Journal of Material Science and Technology, Год журнала: 2023, Номер 180, С. 1 - 11

Опубликована: Окт. 18, 2023

Язык: Английский

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Construction of three-dimensional conductive network and heterogeneous interfaces via different ratio for tunable microwave absorption

Advanced Composites and Hybrid Materials, Год журнала: 2023, Номер 6(6)

Опубликована: Окт. 16, 2023

Язык: Английский

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