Enhanced electromagnetic wave absorption performances of Co3O4 nanocube/reduced graphene oxide composite

被引：102

作者：

Li, Xiubing ^{[1
]}

Yang, Siwei ^{[1
]}

Sun, Jing ^{[1
]}

He, Peng ^{[1
]}

Pu, Xipeng ^{[2
]}

Ding, Guqiao ^{[1
]}

机构：

[1] Chinese Acad Sci, Shanghai Inst Microsyst & Informat Technol, State Key Lab Funct Mat Informat, Shanghai 200050, Peoples R China

[2] Liaocheng Univ, Sch Mat Sci & Engn, Liaocheng 252059, Peoples R China

来源：

SYNTHETIC METALS | 2014年 / 194卷

基金：

中国国家自然科学基金; 中国博士后科学基金;

关键词：

Co3O4; Reduced graphene oxide; Nanocubes; Electromagnetic absorption; LITHIUM-ION BATTERIES; ELECTROCHEMICAL PROPERTIES; HYDROTHERMAL SYNTHESIS; SYNERGISTIC CATALYST; CHEMICAL-REDUCTION; GAS SENSORS; NANOCOMPOSITES; NANOPARTICLES; NANOCRYSTALS; POLYANILINE;

D O I：

10.1016/j.synthmet.2014.04.012

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The Co3O4 nanocube/reduced graphene oxide (Co3O4/RGO) composite paper has been firstly fabricated via a simple process. Several analytical techniques including X-ray diffraction (XRD), Raman spectroscopy, thermogravimetric analysis (TGA), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), and transmission electron microscopy (TEM) have been employed to characterize the Co3O4/RGO composite. The results indicated that the Co3O4 nanocubes attached to the RGO sheets, and that the average edge length of Co3O4 nanocubes is about 200 nm. The obtained composite exhibited a maximum reflection loss of -32.3 dB at 12A GHz with a coating layer thickness of 2.5 mm, and the effective absorption bandwidth with reflection loss less than -10 dB is up to 10.5 GHz (from 5.5 to 16.0 GHz) when an appropriate absorber thickness between 2 and 5 mm is chosen. Such high microwave absorption composite can be used as promising candidate for the new type of electromagnetic wave absorptive material. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：52 / 58

页数：7

共 54 条

[1] Microwave absorption enhancement and complex permittivity and permeability of Fe encapsulated within carbon nanotubes [J].