Constructing mixed-dimensional lightweight magnetic cobalt-based composites heterostructures:An effective strategy to achieve boosted microwave absorption and self-anticorrosion

扫码查看

原文链接

NETL
NSTL
万方数据

外文摘要：Subtle microstructure design and an appropriate multicomponent strategy are essential for advanced electromagnetic absorbing(EMA)materials with a wide effective absorption bandwidth(EAB)and intense absorption.However,sophisticated environments restrict the range of applications for EMA materials.Herein,three hollow spherical bifunctional CoSx/MnS/C nanocomposites with different crystal structures were constructed via cation exchange and subsequent vulcanization.The manganese sulfide and carbon generated during vulcanization exhibit a narrow band gap and enhanced conductivity,thereby facilitating conductive loss.The presence of cobalt sulfide facilitates the improvement of magnetic loss.More impor-tantly,there is a potential difference between different phases at the heterogeneous interface,resulting in a region of space charge,which is conducive to interfacial polarization.The 3D hollow structure and heterogeneous dielectric/magnetic interfaces benefit the predominant EMA performance by forming per-fect impedance matching,interface polarization,conduction loss,and magnetic loss effects.Specifically,an optimal reflection loss(RL)of-51.31 dB at 10.72 GHz and an effective EAB of 5.92 GHz at 2.1 mm can be achieved for Co1-xS/MnS/C nanocomposite.Moreover,the nanocomposites maintained promising self-anticorrosion properties in simulated seawater environments.Transition metal sulfides with supe-rior self-anticorrosion properties provide a pathway to efficient wave-absorbing materials in complicated environments.

外文关键词：

Heterogeneous interfacesDielectric/magnetic lossDifferent crystal structureMicrowave absorptionSelf-anticorrosion

作者：

Jiajun Li、Di Lan、Yuhang Cheng、Zirui Jia、Panbo Liu、Xuetao Shi、Hua Guo、Ailing Feng、Xing Feng、Guanglei Wu、Pengfei Yin

展开 >

作者单位：

College of Science,Sichuan Agricultural University,Ya'an 625014,China

Institute of Materials for Energy and Environment,State Key Laboratory of Bio-fibers and Eco-textiles,College of Materials Science and Engineering,Qingdao University,Qingdao 266071,China

Institute of Physics & Optoelectronics Technology,Baoji University of Arts and Sciences,Baoji 721016,China

School of Materials Science and Engineering,Hubei University of Automotive Technology,Shiyan 442002,China

Shaanxi Key Laboratory of Macromolecular Science and Technology,School of Chemistry and Chemical Engineering,Northwestern Polytechnical University,Xi'an 710072,China

展开 >

基金：

National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNatural Science Foundation of Shandong ProvinceTaishan Scholars and Young Experts Program of Shandong ProvinceQingchuang Talents Induction Program of Shandong Higher Education InstitutionSpecial Financial of Shandong Provincethe"Sanqin Scholars"Innovation Teams Project of Shaanxi Province

项目编号：

5237702652301192ZR2019YQ24tsqn202103057

出版年：

2024

DOI：

10.1016/j.jmst.2024.02.016

材料科学技术(英文版)

中国金属学会中国材料研究学会中国科学院金属研究所

材料科学技术(英文版)

CSTPCD

影响因子：0.657

ISSN：1005-0302

年,卷(期)：2024.196(29)