Defect engineering in N-doped OMC for lightweight and high-efficiency electromagnetic wave absorption
作者机构：School of Electronic and Information EngineeringChangshu Institute of TechnologyChangshu215500China College of Materials Science and EngineeringNanjing Tech UniversityNanjing211816China China Geological SurveyNanjing CenterNanjing210016China Supervision and Testing Center of East ChinaMineral Resources of the Ministry of Land and ResourcesNanjing210016China
出 版 物：《Journal of Materiomics》 (无机材料学学报（英文）)
年 卷 期：2024年第10卷第1期
页 面：190-199页
核心收录：
学科分类：0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学]
基 金：support by National Natural Science Foundation of China(NSFC)(Grant Nos.62174016) Suzhou Science and Technology Project(Grant No.SZS2020313) Jiangsu Province International Science and Technology Cooperation Project(Grant Nos.BZ2021023)and Priority Academic Program Development of Jiangsu Higher Education Institutions(PAPD)
主 题：OMC N-doped Defect engineering RCS simulation Microwave absorption
摘 要：Developing low density and efficient dielectric loss materials has become a research hotspot,which can greatly meet the demands of modern radars and settle the problem of electromagnetic wave ***,a series of N-doped ordered mesoporous carbon(OMC)materials with different nitrogen content were prepared via a modified self-assembly method and defect engineering in subsequent calcination *** was discovered that the content and type of nitrogen doping can be effectively modulated by the amount of precursor dicyandiamide,resulting in the changes in porous structure,carbon defects,electromagnetic properties,microwave absorption(MA)performance and radar cross section(RCS)reduction ***,as-fabricated OMC/N2.5 displays ideal MA performance,whose minimum reflection loss(RL(min))value reaches−35.3 dB at 7.76 GHz(3.0 mm)and its effective absorption bandwidth reaches 3.52 GHz(10.64-14.16 GHz,2.0 mm).Furthermore,the optimal RCS reduction values can be obtained as 12.01 dB·m^(2) when the detection theta is 30°,which validly reduces the chances of being detected by ***,this work opens up a novel way for the development of lightweight and high-efficiency MA materials.
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