Journal of Materials Chemistry C, Год журнала: 2025, Номер unknown
Опубликована: Янв. 1, 2025
The superelastic partially rGO aerogel with multi-stage pores exhibits a remarkable RL min of −67.89 dB and an expanded EAB 7.72 GHz, combining outstanding mechanical properties, hydrophobicity, thermal insulation piezoresistive sensing.
Язык: Английский
Advanced Functional Materials, Год журнала: 2025, Номер unknown
Опубликована: Янв. 28, 2025
Abstract Excessive electromagnetic pollution caused by waves can interfere with the normal use of electronic devices or cause unnecessary damage to human health. Although conductive polymer composites (CPCs) are used replace traditional metals as an effective strategy for managing undesirable waves, CPCs have a non‐negligible trade‐off in enhancement interference (EMI) shielding effectiveness and absorption coefficient because their reflection‐dominated EMI mechanism. Therefore, alleviate secondary pollution, absorption‐dominated asymmetric structures urgently needed. Recently, structural designs advanced significantly, but seldom been summarized discussed detail. Consequently, this review first systematically summarizes current progress after brief clarification about necessity configuration structure design. Afterward, various fiber, layered, porous, composite described. Besides, versatility is briefly introduced. Finally, challenges prospects proposed guide future advancement field.
Язык: Английский
Процитировано
4
Materials Today Nano, Год журнала: 2025, Номер unknown, С. 100571 - 100571
Опубликована: Янв. 1, 2025
Язык: Английский
Процитировано
2
Carbon, Год журнала: 2025, Номер unknown, С. 120093 - 120093
Опубликована: Фев. 1, 2025
Язык: Английский
Процитировано
2
Nano-Micro Letters, Год журнала: 2025, Номер 17(1)
Опубликована: Апрель 14, 2025
Abstract Enhancing the firefighting protective clothing with exceptional thermal barrier and temperature sensing functions to ensure high fire safety for firefighters has long been anticipated, but it remains a major challenge. Herein, inspired by human muscle, an anisotropic aerogel (ACMCA) precise self-actuated monitoring performance is developed combining aramid nanofibers eicosane/MXene form anisotropically oriented conductive network. By two synergies of negative temperature-dependent eicosane, which induces high-temperature differential, directionally ordered MXene that establishes network along directional freezing direction. The resultant ACMCA exhibited remarkable thermoelectric properties, S values reaching 46.78 μV K −1 κ as low 0.048 W m at room temperature. Moreover, prepared electrical responsiveness variations, facilitating its application in intelligent systems. designed could be incorporated into layer, demonstrating wide range (50–400 °C) rapid response time early alerts (~ 1.43 s). This work provides novel insights design temperature-sensitive clothing.
Язык: Английский
Процитировано
2
Small Methods, Год журнала: 2025, Номер unknown
Опубликована: Янв. 28, 2025
Abstract With the advent of 5G era, there has been a marked increase in research interest concerning electromagnetic wave‐absorbing materials. A critical challenge remains improving properties these materials while satisfying diverse application demands. MXenes, identified as prominent “emerging” 2D for wave absorption, offer unique advantages that are expected to drive advancements and innovations this field. This review emphasizes synthesis benefits provided by structural characteristics MXenes performance enhancements achieved through their combination with other absorbing Material requirements, approaches, conceptual frameworks integrated underscore advantages. The study provides thorough analysis MXene‐absorbing composites, going beyond basic classification address preparation modification processes affecting absorption composites. Attention is directed techniques, design principles, influence on composite performance. Additionally, potential applications devices summarized. concludes addressing challenges currently confronting MXene outlining developmental trends, aiming guidance subsequent domain.
Язык: Английский
Процитировано
1
Опубликована: Янв. 1, 2025
Efficient microwave absorbers are needed to address the electromagnetic pollution caused by proliferation of new radio technologies and equipment. Excellent absorption performance can be achieved controlling dielectric constant. Heteroatom-doped bimetallic materials promising wave (EMA) due their tunable structures low cost. In particular, presence anionic sites significantly affects constant electrical conductivity. Herein, a one-dimensional carbon nanofiber material is prepared encapsulating FeCo nanoparticles in fiber cavity electrostatic spinning. Subsequently, tellurization, vulcanization, selenization processes carried out. FeTe2/ CoTe2@C exhibits stronger conductivity loss lower electronegativity Te. The clever configuration FeTe2, CoTe2, C heterostructures obtained Te doping generates multi-heterogeneous interfaces that facilitate charge migration enhance loss, optimizing EMA performance. FeTe2/CoTe2@C an optimum minimum reflection (RLmin) −51.1 dB with matching thickness 2.0 mm, effective bandwidth (EAB) reaches 4.2 GHz. Radar cross-section (RCS) calculations show great potential for practical military stealth technology. This study offers novel guidance improving properties transition metal matrix composites via coordination modulation.
Язык: Английский
Процитировано
0
Ceramics International, Год журнала: 2025, Номер unknown
Опубликована: Янв. 1, 2025
Язык: Английский
Процитировано
0
ACS Applied Materials & Interfaces, Год журнала: 2025, Номер unknown
Опубликована: Март 20, 2025
Graphene has been one of the most widely explored two-dimensional (2D) assemblies due to its outstanding mechanical, electrical, and thermal properties resulting from unique characteristics high anisotropy strong carbon-carbon bonds. Aerogels, characterized by their ultralow density ultrahigh specific surface area, stand out as leading porous materials. Therefore, integration graphene aerogels would boost development multifunctional Among various methods for fabrication aerogels, ice-templating received significant interest ecofriendly nature a physical process, broad applicability across material systems, proficiency in constructing abundant structures multifunctionalities. Consequently, become prevalent technique efficient assembly nanosheets into with inherited graphene, multifunctionality derived diverse constituents, well-controlled architecture. In this review, we systematically summarize progress ice-templated graphene-based aerogels. Initially, introduce process these elaborating each step precursor preparation freezing, drying, post-treatment. Subsequently, demonstrate applications macroarchitectures microstructures. Finally, review concludes straightforward summary, highlighting challenges opportunities associated This systematic aims offer new insights design innovative multiscale architecture multifunctionalities, which are crucial variety engineering applications.
Язык: Английский
Процитировано
0
Composites Part B Engineering, Год журнала: 2025, Номер unknown, С. 112497 - 112497
Опубликована: Апрель 1, 2025
Язык: Английский
Процитировано
0
Small Methods, Год журнала: 2025, Номер unknown
Опубликована: Апрель 9, 2025
Abstract Efficient microwave absorbers are needed to address the electromagnetic pollution caused by proliferation of new radio technologies and equipment. Excellent absorption performance can be achieved controlling dielectric constant. Heteroatom‐doped bimetallic materials promising wave (EMA) due their tunable structures low cost. In particular, presence anionic sites significantly affects constant electrical conductivity. Herein, a 1D carbon nanofiber material is prepared encapsulating FeCo nanoparticles in fiber cavity electrostatic spinning. Subsequently, tellurization, vulcanization, selenization processes carried out. FeTe 2 / CoTe @C exhibits stronger conductivity loss lower electronegativity Te. The clever configuration , C heterostructures obtained Te doping generates multi‐heterogeneous interfaces that facilitate charge migration enhance interfacial polarization, obtaining excellent EMA performance. /CoTe an optimum minimum reflection (RL min ) −51.1 dB with matching thickness 2.0 mm, effective bandwidth (EAB) reaches 4.2 GHz. Radar cross‐section (RCS) calculations show great potential for practical military stealth technology. This study offers novel guidance improving properties transition metal matrix composites via coordination modulation.
Язык: Английский
Процитировано
0