Rational design of hierarchical structure of carbon@polyaniline composite with enhanced microwave absorption properties

被引：85

作者：

Yang, Wentong ^{[1
]}

Sun, Jiawen ^{[1
]}

Liu, Deyun ^{[1
]}

Fu, Wenwen ^{[1
]}

Dong, Yubing ^{[1
]}

Fu, Yaqin ^{[1
]}

Zhu, Yaofeng ^{[1
]}

机构：

[1] Zhejiang Sci Tech Univ, Key Lab Adv Text Mat & Mfg Technol, Minist Educ, Hangzhou 310018, Peoples R China

来源：

CARBON | 2022年 / 194卷

基金：

中国国家自然科学基金;

关键词：

HPC@PANI composite; Hierarchical structure; Reflection loss; Microwave absorption mechanism; PERFORMANCE; MICROSPHERES; BIOMASS; HETEROSTRUCTURE; CONSTRUCTION; NANOSHEETS; NANOTUBES; CNT;

D O I：

10.1016/j.carbon.2022.03.061

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：

Reasonable combination of components and ingenious structure design are effective strategies to achieve superior microwave absorption (MA). In this work, polyaniline was grown in situ on hollow porous carbon microspheres prepared by polymerization and pyrolysis-etching processes. The synthesized hollow porous carbon@polyaniline (HPC@PANI) shows a specific hierarchical structure and possesses extraordinary MA properties. The optimal minimum reflection loss (RL) of HPC@PANI is as high as -64.31 dB at 13.80 GHz with a thin thickness of 1.86 mm, and the corresponding effective absorption bandwidth (EAB, RL < -10 dB) is as wide as 4.85 GHz (11.90 GHz-16.75 GHz). The mechanism of such superior MA properties is associated with well impedance matching, strong loss capabilities and welldefined structural characteristics. It is expected that the design of HPC@PANI with hierarchical structures in this work could provide ideas for the structural design of efficient MA materials. (c) 2022 Elsevier Ltd. All rights reserved.

引用

页码：114 / 126

页数：13

共 58 条

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