Porous Structure Fibers Based on Multi‐Element Heterogeneous Components for Optimized Electromagnetic Wave Absorption and Self‐Anticorrosion Performance DOI
Jiahui Zhu, Di Lan, Xuehua Liu

et al.

Small, Journal Year: 2024, Volume and Issue: 20(47)

Published: Aug. 11, 2024

Abstract The excellent performance of electromagnetic wave absorbers primarily depends on the coordination among components and rational design structure. In this study, a series porous fibers with carbon nanotubes uniformly distributed in shape pine leaves are prepared through electrospinning technique, one‐pot hydrothermal synthesis, high‐temperature catalysis method. impedance matching nanofibers structure is optimized by incorporating melamine into spinning solution, as it undergoes gas decomposition during calcination. Moreover, electronic can be modulated controlling NH 4 F content synthesis process. Ultimately, Ni/Co/CrN/CNTs‐CF specimen (P3C NiCrN12) exhibited superior performance, while achieving minimum reflection loss (RL min ) −56.18 dB at thickness 2.2 mm maximum absorption bandwidth (EAB max 5.76 GHz 2.1 mm. This study presents an innovative approach to fabricating lightweight, thin materials exceptional properties wide optimizing three key factors influencing performance.

Language: Английский

Excellent Low‐Frequency Microwave Absorption and High Thermal Conductivity in Polydimethylsiloxane Composites Endowed by Hydrangea‐Like CoNi@BN Heterostructure Fillers DOI Open Access
Mukun He,

Xiao Zhong,

Xinghan Lu

et al.

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(48)

Published: Oct. 9, 2024

Abstract The advancement of thin, lightweight, and high‐power electronic devices has increasingly exacerbated issues related to electromagnetic interference heat accumulation. To address these challenges, a spray‐drying‐sintering process is employed assemble chain‐like CoNi flake boron nitride (BN) into hydrangea‐like CoNi@BN heterostructure fillers. These fillers are then composited with polydimethylsiloxane (PDMS) develop CoNi@BN/PDMS composites, which integrate low‐frequency microwave absorption thermal conductivity. When the volume fraction 44 vol% mass ratio BN 3:1, composites exhibit optimal performance in both achieve minimum reflection loss −49.9 dB effective bandwidth 2.40 GHz (3.92–6.32 GHz) at thickness 4.4 mm, fully covering n79 band (4.4–5.0 for 5G communications. Meanwhile, in‐plane conductivity ( λ ∥ ) 7.31 W m −1 K , ≈11.4 times (0.64 pure PDMS, 32% higher than that (CoNi/BN)/PDMS (5.52 same obtained through direct mixing.

Language: Английский

Citations

144
Leakage Proof, Flame-Retardant, and Electromagnetic Shield Wood Morphology Genetic Composite Phase Change Materials for Solar Thermal Energy Harvesting DOI Creative Commons
Yuhui Chen, Meng Yang,

Jiangyu Zhang

et al.

Nano-Micro Letters, Journal Year: 2024, Volume and Issue: 16(1)

Published: May 16, 2024

Abstract Phase change materials (PCMs) offer a promising solution to address the challenges posed by intermittency and fluctuations in solar thermal utilization. However, for organic solid–liquid PCMs, issues such as leakage, low conductivity, lack of efficient solar-thermal media, flammability have constrained their broad applications. Herein, we present an innovative class versatile composite phase (CPCMs) developed through facile environmentally friendly synthesis approach, leveraging inherent anisotropy unidirectional porosity wood aerogel (nanowood) support polyethylene glycol (PEG). The modification process involves incorporation phytic acid (PA) MXene hybrid structure evaporation-induced assembly method, which could impart non-leaking PEG filling while concurrently facilitating conduction, light absorption, flame-retardant. Consequently, as-prepared wood-based CPCMs showcase enhanced conductivity (0.82 W m −1 K , about 4.6 times than PEG) well high latent heat 135.5 kJ kg (91.5% encapsulation) with durability stability throughout at least 200 heating cooling cycles, featuring dramatic conversion efficiency up 98.58%. In addition, synergistic effect MXene, flame-retardant performance has been significantly enhanced, showing self-extinguishing behavior. Moreover, excellent electromagnetic shielding 44.45 dB was endowed CPCMs, relieving contemporary health hazards associated waves. Overall, capitalize on exquisite cell transport development multifunctional showcasing operational principle proof-of-concept prototype system.

Language: Английский

Citations

101
Constructing multiple heterogeneous interfaces in one-dimensional carbon fiber materials for superior electromagnetic wave absorption DOI
Qiaoling Zhang, Di Lan,

Shuanglin Deng

et al.

Carbon, Journal Year: 2024, Volume and Issue: 226, P. 119233 - 119233

Published: May 11, 2024

Language: Английский

Citations

98
Consistent Thermal Conductivities of Spring‐Like Structured Polydimethylsiloxane Composites under Large Deformation DOI

Yongqiang Guo,

Shuangshuang Wang, Haitian Zhang

et al.

Advanced Materials, Journal Year: 2024, Volume and Issue: unknown

Published: July 6, 2024

Flexible and highly thermally conductive materials with consistent thermal conductivity (λ) during large deformation are urgently required to address the heat accumulation in flexible electronics. In this study, spring-like conduction pathways of silver nanowire (S-AgNW) fabricated by 3D printing compounded polydimethylsiloxane (PDMS) prepare S-AgNW/PDMS composites excellent λ deformation. The exhibit a 7.63 W m

Language: Английский

Citations

87
Mixed-Dimensional Assembly Strategy to Construct Reduced Graphene Oxide/Carbon Foams Heterostructures for Microwave Absorption, Anti-Corrosion and Thermal Insulation DOI Creative Commons

Beibei Zhan,

Yunpeng Qu, Xiaosi Qi

et al.

Nano-Micro Letters, Journal Year: 2024, Volume and Issue: 16(1)

Published: June 17, 2024

Abstract Considering the serious electromagnetic wave (EMW) pollution problems and complex application condition, there is a pressing need to amalgamate multiple functionalities within single substance. However, effective integration of diverse functions into designed EMW absorption materials still faces huge challenges. Herein, reduced graphene oxide/carbon foams (RGO/CFs) with two-dimensional/three-dimensional (2D/3D) van der Waals (vdWs) heterostructures were meticulously engineered synthesized utilizing an efficient methodology involving freeze-drying, immersing absorption, secondary followed by carbonization treatment. Thanks their excellent linkage effect amplified dielectric loss optimized impedance matching, 2D/3D RGO/CFs vdWs demonstrated commendable performances, achieving broad bandwidth 6.2 GHz reflection − 50.58 dB low matching thicknesses. Furthermore, obtained also displayed significant radar stealth properties, good corrosion resistance performances as well outstanding thermal insulation capabilities, displaying great potential in variable environments. Accordingly, this work not only straightforward method for fabricating heterostructures, but outlined powerful mixed-dimensional assembly strategy engineering multifunctional protection, aerospace other conditions.

Language: Английский

Citations

84
In Situ Atomic Reconstruction Engineering Modulating Graphene-Like MXene-Based Multifunctional Electromagnetic Devices Covering Multi-Spectrum DOI Creative Commons
Tingting Liu, Qi Zheng, Wen‐Qiang Cao

et al.

Nano-Micro Letters, Journal Year: 2024, Volume and Issue: 16(1)

Published: April 15, 2024

With the diversified development of big data, detection and precision guidance technologies, electromagnetic (EM) functional materials devices serving multiple spectrums have become a hot topic. Exploring multispectral response is challenging meaningful scientific question. In this study, MXene/TiO

Language: Английский

Citations

75
Kirkendall Effect‐Induced Ternary Heterointerfaces Engineering for High Polarization Loss MOF‐LDH‐MXene Absorbers DOI Open Access

Chunhua Sun,

Di Lan, Zirui Jia

et al.

Small, Journal Year: 2024, Volume and Issue: 20(48)

Published: Aug. 29, 2024

Heterogeneous interfacial engineering has garnered widespread attention for optimizing polarization loss and enhancing the performance of electromagnetic wave absorption. A novel Kirkendall effect-assisted electrostatic self-assembly method is employed to construct a metal-organic framework (MOF, MIL-88A) decorated with Ni-Fe layered double hydroxide (LDH), forming multilayer nano-cage coated Ti

Language: Английский

Citations

73
Hierarchical porous molybdenum carbide synergic morphological engineering towards broad multi-band tunable microwave absorption DOI
Tianbao Zhao, Di Lan, Zirui Jia

et al.

Nano Research, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 12, 2024

Language: Английский

Citations

64
Perspective of electromagnetic wave absorbing materials with continuously tunable effective absorption frequency bands DOI
Di Lan,

Hu Ying,

Min Wang

et al.

Composites Communications, Journal Year: 2024, Volume and Issue: 50, P. 101993 - 101993

Published: July 9, 2024

Language: Английский

Citations

61
Constructing Built-In Electric Fields with Semiconductor Junctions and Schottky Junctions Based on Mo–MXene/Mo–Metal Sulfides for Electromagnetic Response DOI Creative Commons
Xiaojun Zeng,

Xiao Jiang,

Ya Ning

et al.

Nano-Micro Letters, Journal Year: 2024, Volume and Issue: 16(1)

Published: June 11, 2024

Abstract The exploration of novel multivariate heterostructures has emerged as a pivotal strategy for developing high-performance electromagnetic wave (EMW) absorption materials. However, the loss mechanism in traditional is relatively simple, guided by empirical observations, and not monotonous. In this work, we presented semiconductor–semiconductor–metal heterostructure system, Mo–MXene/Mo–metal sulfides (metal = Sn, Fe, Mn, Co, Ni, Zn, Cu), including semiconductor junctions Mott–Schottky junctions. By skillfully combining these distinct functional components (Mo–MXene, MoS 2 , metal sulfides), can engineer multiple heterogeneous interface with superior capabilities, broad effective bandwidths, ultrathin matching thickness. successful establishment gives rise to built-in electric field that intensifies electron transfer, confirmed density theory, which collaborates dielectric polarization mechanisms substantially amplify EMW absorption. We detailed synthesis series featuring both semiconductor–semiconductor semiconductor–metal interfaces. achievements were most pronounced Mo–MXene/Mo–Sn sulfide, achieved remarkable reflection values − 70.6 dB at thickness only 1.885 mm. Radar cross-section calculations indicate MXene/Mo–metal have tremendous potential practical military stealth technology. This work marks departure from conventional component design limitations presents pathway creation advanced MXene-based composites potent capabilities.

Language: Английский

Citations

60