柔性、疏水性二硫化钼纳米片装饰碳布复合材料，用于高效电磁干扰屏蔽

IF 5.3 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Research Bulletin Pub Date : 2025-05-05 DOI:10.1016/j.materresbull.2025.113533

Chengzhi Zu , Huawei Rong , Rongzhi Zhao , Yang Liu , Jian Zhang , Xuefeng Zhang

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引用次数: 0

摘要

生物质碳因其独特的三维结构和可持续性而成为屏蔽电磁干扰的理想材料之一。本文采用一步水热法制备了柔性疏水性碳布/二硫化钼纳米片复合材料。交叉碳纤维形成导电网络，提供电子迁移和传输路径。碳布独特的人工周期结构与二硫化钼结合会产生负介电常数行为，从而导致更强的阻抗失配。同时，二硫化钼纳米片构建的多界面、缺陷和极化效应可以改善电磁波损耗。进一步探讨了负介电常数与电磁屏蔽性能之间的关系。这些复合材料的有效电磁屏蔽在J （5.85 ~ 8.2 GHz）、X （8.2 ~ 12.4 GHz）和P （12.4 ~ 18 GHz）频段可达到20 dB。CM-180样品在8.2 GHz处获得最大SE值25.1 dB，可以满足日常电子设备的屏蔽要求。特别是，复合材料具有柔韧性和疏水性，为可穿戴领域的应用提供了可能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Flexible, hydrophobic MoS2 nanosheets decorated carbon cloth composites for efficient electromagnetic interference shielding

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Flexible, hydrophobic MoS2 nanosheets decorated carbon cloth composites for efficient electromagnetic interference shielding

Biomass-derived carbon is one of the ideal materials for electromagnetic interference (EMI) shielding due to its sustainable and unique three-dimensional structure. In this paper, flexible and hydrophobic Carbon cloth/MoS₂ nanosheets composite is synthesized by a one-step hydrothermal method. The crossed carbon fibers build a conductive network to provide electron migration and transmission path. The unique artificial periodic structure of carbon cloth combined with MoS₂ can produce negative permittivity behavior, which leads to stronger impedance mismatch. Meanwhile, multiple interfaces, defects and polarization effect built by MoS₂ nanosheet can improve electromagnetic wave loss. The relationship between negative permittivity and electromagnetic shielding properties is further explored. Effective electromagnetic shielding of these composites can reach >20 dB in J (5.85∼8.2 GHz), X (8.2∼12.4 GHz) and P (12.4∼18 GHz) bands. The maximum SE value of 25.1 dB can be obtained at 8.2 GHz in CM-180 sample, which can meet the shielding requirements of daily electronic devices. Particularly, the composites are flexible and hydrophobic, providing the possibility of applications in wearable field.

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来源期刊

Materials Research Bulletin 工程技术-材料科学：综合

CiteScore

9.80

自引率

5.60%

发文量

372

审稿时长

42 days

期刊介绍： Materials Research Bulletin is an international journal reporting high-impact research on processing-structure-property relationships in functional materials and nanomaterials with interesting electronic, magnetic, optical, thermal, mechanical or catalytic properties. Papers purely on thermodynamics or theoretical calculations (e.g., density functional theory) do not fall within the scope of the journal unless they also demonstrate a clear link to physical properties. Topics covered include functional materials (e.g., dielectrics, pyroelectrics, piezoelectrics, ferroelectrics, relaxors, thermoelectrics, etc.); electrochemistry and solid-state ionics (e.g., photovoltaics, batteries, sensors, and fuel cells); nanomaterials, graphene, and nanocomposites; luminescence and photocatalysis; crystal-structure and defect-structure analysis; novel electronics; non-crystalline solids; flexible electronics; protein-material interactions; and polymeric ion-exchange membranes.