生物质衍生的分层碳框架能够实现强大的微波吸收

IF 17.3 1区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Matter Pub Date : 2025-07-21 DOI:10.1016/j.matt.2025.102289

Yusen Ai, Ruizhe Xing, Ning Ren, Renliang Huang, Mei Cui, Rongxin Su, Jie Kong

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引用次数: 0

摘要

复杂的电磁环境对高性能电磁波（EMW）吸收器提出了挑战。由于传输路径不匹配和四分之一波长理论的厚度限制，传统的单层吸收器在斜入射下性能下降。为了解决这个问题，我们开发了一种磷酸化碳化木-磷酸化碳化纤维复合材料（PCW-PCF），将自然取向的多孔元结构与微工程碳纤维网络相结合。这种分层框架采用材料/结构色散工程来增强多重散射和介电损耗。PCW-PCF实现了超远31 GHz吸收波段（9-40 GHz，美国海军研究实验室(NRL)-拱法），跨极化（TE/TM）和斜入射（≤60°）性能稳定。此外，它还具有超低密度（0.048 g/cm3），优异的比抗压强度（66.46 MPa cm−3 g−1）和阻燃性。这些发现强调了利用可持续木材衍生材料开发高性能EMW吸收材料的巨大潜力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Biomass-derived hierarchical carbon frameworks enable robust microwave absorption

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Biomass-derived hierarchical carbon frameworks enable robust microwave absorption

The complex electromagnetic environment challenges high-performance electromagnetic wave (EMW) absorbers. Conventional single-layer absorbers face performance decline under oblique incidence due to mismatched transmission paths and thickness constraints from quarter-wavelength theory. To address this, we develop a phosphorylated carbonized wood-phosphorylated carbonized fiber composite (PCW-PCF), combining natural oriented porous meta-structures with a micro-engineered carbon fiber network. This hierarchical framework employs material/structural dispersion engineering to enhance multiple scattering and dielectric losses. The PCW-PCF achieves an ultrabroad 31-GHz absorption band (9–40 GHz, US Naval Research Laboratory (NRL)-arch method), stable performance across polarizations (TE/TM) and oblique incidence (≤60°). Additionally, it demonstrates ultralow density (0.048 g/cm³), exceptional specific compressive strength (66.46 MPa cm⁻³ g⁻¹), and flame retardancy. These findings underscore the significant potential of utilizing sustainable wood-derived materials for the development of high-performance EMW absorption materials.

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来源期刊

Matter MATERIALS SCIENCE, MULTIDISCIPLINARY-

CiteScore

26.30

自引率

2.60%

发文量

367

期刊介绍： Matter, a monthly journal affiliated with Cell, spans the broad field of materials science from nano to macro levels,covering fundamentals to applications. Embracing groundbreaking technologies,it includes full-length research articles,reviews, perspectives,previews, opinions, personnel stories, and general editorial content. Matter aims to be the primary resource for researchers in academia and industry, inspiring the next generation of materials scientists.