Wood-based straightway channel structure for high performance microwave absorption

被引：220

作者：

Xi, Jiabin ^{[1
]}

Zhou, Erzhen ^{[2
]}

Liu, Yingjun ^{[1
]}

Gao, Weiwei ^{[1
]}

Ying, Ji ^{[2
]}

Chen, Zichen ^{[2
]}

Gao, Chao ^{[1
]}

机构：

[1] Zhejiang Univ, Dept Polymer Sci & Engn, MOE Key Lab Macromol Synth & Functionalizat, Key Lab Adsorpt & Separat Mat & Technol Zhejiang, 38 Zheda Rd, Hangzhou 310027, Zhejiang, Peoples R China

[2] Zhejiang Univ, Dept Mech Engn, Hangzhou 310027, Zhejiang, Peoples R China

来源：

CARBON | 2017年 / 124卷

基金：

中国国家自然科学基金; 国家重点研发计划;

关键词：

Wood; Biomass carbon; Aligned channels; Microwave absorption; ELECTROMAGNETIC-WAVE ABSORPTION; GRAPHENE OXIDE; ULTRALIGHT; MATRIX;

D O I：

10.1016/j.carbon.2017.07.088

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Microwave absorption (MA) materials have gained wide range of applications including satellite communications, radar detections, etc. Here, for the first time we designed high-performance porous biomass-pyrolized carbon (PBPC) based on natural wood. The PBPC with orderly parallel channel structure is on the top among all MA materials, showing excellent MA performance with maximum reflection loss (RL) of -68.3 dB and absorption bandwidth (RL <= -10 dB) up to 7.63 GHz. Furthermore, we predict the reflection loss by calculation and point out regulation of electrical conductivity would maximize MA performance. The combination of renewability, easy mass production and simple fabrication provides PBPC practical application value, and the strategy of channel structure design followed by permittivity adjustment casts a light for accessing new high-performance MA materials. (C) 2017 Elsevier Ltd. All rights reserved.

引用

页码：492 / 498

页数：7

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