Nanoconfinement strategy for lightweight FeCoNi/N-doped carbon nanotubes with broadband electromagnetic absorption

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

Materials Research Bulletin Pub Date : 2025-05-10 DOI:10.1016/j.materresbull.2025.113548

Shengyuan Liang , Junjie Wang , Dunyan Jiang , Lijun Wang , Shikuo Li

引用次数: 0

Abstract

Designing rational and lightweight magnetic-dielectric composites for efficient electromagnetic wave absorption remains a significant challenge. Herein, the FeCoNi metal-induced nitrogen-doped carbon nanotubes (FeCoNi@NCNTs) were synthesized though unique nanoconfinement strategy during carbon thermal reduction reaction. In confined environment, sufficient conditions were provided for the multidimensional growth of nanostructures. The mechanisms of carbon nanotube growth and electromagnetic wave absorption were further investigated. The FeCoNi@NCNTs exhibited a minimum reflection loss of -59.5 dB within the 2–18 GHz frequency range. Moreover, the composite achieved a minimum effective absorption bandwidth of 5.3 GHz at 2.0 mm. This work provides a new insight for preparing various magnetic-dielectric composites with rich absorption effects and broadband microwave absorption.

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宽带电磁吸收轻质FeCoNi/ n掺杂碳纳米管的纳米约束策略

设计合理、轻量化的电磁介质复合材料以实现有效的电磁波吸收仍然是一个重大挑战。本文采用独特的纳米约束策略，在碳热还原反应中合成了FeCoNi金属诱导的氮掺杂碳纳米管（FeCoNi@NCNTs）。在密闭环境下，为纳米结构的多维生长提供了充分的条件。进一步研究了碳纳米管生长和电磁波吸收的机理。FeCoNi@NCNTs在2-18 GHz频率范围内的最小反射损耗为-59.5 dB。此外，该复合材料在2.0 mm处实现了5.3 GHz的最小有效吸收带宽。这项工作为制备各种具有丰富吸收效应和宽带微波吸收的磁介电复合材料提供了新的思路。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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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.