Effect of Surface Structure and Composition on the Electromagnetic Properties of Ti3C2Tx MXenes for Highly Efficient Electromagnetic Wave Absorption

被引：39

作者：

Zhang, Zilong ^{[1
,2
]}

He, Yaoyi ^{[1
,2
]}

Lv, Yangyang ^{[1
,2
]}

Zhang, Lei ^{[1
,2
]}

Chen, Xiqiao ^{[1
,2
]}

Wu, Zhuang ^{[1
,2
]}

Zou, Yanhong ^{[1
,2
]}

机构：

[1] Hunan Univ, Key Lab Micro Nano Optoelect Devices, Minist Educ, Changsha 410082, Hunan, Peoples R China

[2] Hunan Univ, Hunan Prov Key Lab Low Dimens Struct Phys & Devic, Sch Phys & Elect, Changsha 410082, Hunan, Peoples R China

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2020年 / 124卷 / 36期

基金：

中国国家自然科学基金;

关键词：

MICROWAVE-ABSORBING PROPERTIES; BROAD-BAND; CARBON NANOTUBES; GRAPHENE; PERFORMANCE; NANOCOMPOSITES; NANOPARTICLES; MICROSPHERES; LIGHTWEIGHT; NANOSHEETS;

D O I：

10.1021/acs.jpcc.0c06115

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：

In this paper, two-dimensional Ti3C2Tx-MXenes with abundant defects and functional groups as well as appropriate conductivity were successfully synthesized by acid treatment at room temperature. The relationship between the surface structure and its electromagnetic wave absorption ability was systematically studied by changing etching time and heat treatment. Benefiting from the conduction loss and strong polarization relaxation around the abundant interface areas in the two-dimensional layered structure, the Ti3C2Tx Mxene composite possesses excellent electromagnetic absorption performance. Remarkably, optimized Ti3C2Tx exhibits extremely strong absorption with a minimum reflection coefficient of -65 dB, and the qualified absorbing bandwidth is up to 5 GHz. Furthermore, the ultrathin matching thickness of the Ti3C2Tx Mxene composite is 1.4 mm. The prominent absorbing performance outperforms most recently reported two-dimensional carbon materials for microwave absorption.

引用

页码：19666 / 19674

页数：9

共 54 条

[1] Investigating the effects of metallic submicron and nanofilms on fiber-reinforced composites for lightning strike protection and EMI shielding [J].