Ti3C2 MXenes with Modified Surface for High-Performance Electromagnetic Absorption and Shielding in the X-Band

被引：843

作者：

Han, Meikang ^{[1
]}

Yin, Xiaowei ^{[1
]}

Wu, Heng ^{[1
]}

Hou, Zexin ^{[1
]}

Song, Changqing ^{[1
]}

Li, Xinliang ^{[1
]}

Zhang, Litong ^{[1
]}

Cheng, Laifei ^{[1
]}

机构：

[1] Northwestern Polytech Univ, Sci & Technol Thermostruct Composite Mat Lab, Xian 710072, Peoples R China

来源：

ACS APPLIED MATERIALS & INTERFACES | 2016年 / 8卷 / 32期

基金：

中国国家自然科学基金;

关键词：

mxenes; surface modification; dielectric; microwave absorption; electromagnetic shielding; 2-DIMENSIONAL TITANIUM CARBIDE; TRANSITION-METAL CARBIDES; HIGH VOLUMETRIC CAPACITANCE; MICROWAVE-ABSORPTION; WAVE ABSORPTION; CARBON NANOTUBES; ELECTRICAL-PROPERTIES; EPOXY COMPOSITES; FOAM COMPOSITES; GRAPHENE OXIDE;

D O I：

10.1021/acsami.6b06455

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Electromagnetic (EM) absorbing and shielding composites with tunable absorbing behaviors based, on Ti3C2 MXenes are fabricated via HF etching and annealing treatment. Localized sandwich structure without sacrificing the original layered morphology is realized, which is responsible for the enhancement of EM absorbing capability in the X-band. The composite with SO wt % annealed MXenes exhibits a minimum reflection loss of -48.4 dB at 11.6 GHz, because of the formation of TiO2 nanocrystals and amorphous carbon. Moreover, superior shielding effectiveness with high absorption effectiveness is achieved. The total and absorbing shielding effectiveness of Ti3C2 MXenes in a wax matrix with a. thickness of only 1 min reach values of 76.1 and 67.3 dB, while those of annealed Ti3C2 MXenes/wax composites are 32 and 24.2 dB, respectively. Considering the promising performance of Ti3C2 MXenes with the modified surface, this work is expected to open the door for the expanded applications of MXenes family in EM absorbing and shielding fields.

引用

页码：21011 / 21019

页数：9

共 61 条

[51] High permittivity from defective multiwalled carbon nanotubes in the X-band [J].