超级坚韧的 MXene/Sodium Alginate 复合纤维毡集成了出色的电磁干扰屏蔽和加热性能。

IF 9.6 1区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY Nano Letters Pub Date : 2024-06-24 DOI:10.1021/acs.nanolett.4c01920

Guoxin Zhao, Chao Sui*, Chenxi Zhao, Yushun Zhao, Gong Cheng, Junjiao Li, Lei Wen, Weizhe Hao, Yuna Sang, Yingchun Zhou, Xiaodong He and Chao Wang*,

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引用次数: 0

摘要

用于智能纺织品和便携式设备的基于 MXene 的多功能织物的开发备受关注。然而，对其结构设计和相关机械性能的研究却非常有限。本文制备了由 MXene/海藻酸钠（SA）纤维组成的超韧 MXene 纤维毡。纤维毡的断裂强度和弯曲刚度分别高达 97.8 MPa 和 1.04 N mm2。此外，还利用经典的格里菲斯理论评估了毛毡的断裂韧性，得出临界应力强度因子为 1.79 MPam。此外，这种毛毡还具有出色的电热转换性能（电压为 2.5 V 时温度可达 119 ℃）、高低温和高温光热转换性能（-196 至 160 ℃）以及出色的电磁干扰（EMI）屏蔽效果（X 波段 54.4 dB）。这项工作为基于 MXene 的高性能纺织品提供了新的结构设计理念，拓宽了其未来的应用领域。

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Supertough MXene/Sodium Alginate Composite Fiber Felts Integrated with Outstanding Electromagnetic Interference Shielding and Heating Properties

The development of multifunctional MXene-based fabrics for smart textiles and portable devices has garnered significant attention. However, very limited studies have focused on their structure design and associated mechanical properties. Here, the supertough MXene fiber felts composed of MXene/sodium alginate (SA) fibers were fabricated. The fracture strength and bending stiffness of felts can be up to 97.8 MPa and 1.04 N mm², respectively. Besides, the fracture toughness of felts was evaluated using the classic Griffith theory, yielding to a critical stress intensity factor of 1.79 $M P a \sqrt{m}$ . In addition, this kind of felt presents outstanding electrothermal conversion performance (up to 119 °C at a voltage of 2.5 V), high cryogenic and high-temperature tolerance of photothermal conversion performance (−196 to 160 °C), and excellent electromagnetic interference (EMI) shielding effectiveness (54.4 dB in the X-band). This work provides new structural design concepts for high-performance MXene-based textiles, broadening their future applications.

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来源期刊

Nano Letters 工程技术-材料科学：综合

CiteScore

16.80

自引率

2.80%

发文量

1182

审稿时长

1.4 months

期刊介绍： Nano Letters serves as a dynamic platform for promptly disseminating original results in fundamental, applied, and emerging research across all facets of nanoscience and nanotechnology. A pivotal criterion for inclusion within Nano Letters is the convergence of at least two different areas or disciplines, ensuring a rich interdisciplinary scope. The journal is dedicated to fostering exploration in diverse areas, including: - Experimental and theoretical findings on physical, chemical, and biological phenomena at the nanoscale - Synthesis, characterization, and processing of organic, inorganic, polymer, and hybrid nanomaterials through physical, chemical, and biological methodologies - Modeling and simulation of synthetic, assembly, and interaction processes - Realization of integrated nanostructures and nano-engineered devices exhibiting advanced performance - Applications of nanoscale materials in living and environmental systems Nano Letters is committed to advancing and showcasing groundbreaking research that intersects various domains, fostering innovation and collaboration in the ever-evolving field of nanoscience and nanotechnology.