Hollow Gradient-Structured Iron-Anchored Carbon Nanospheres for Enhanced Electromagnetic Wave Absorption

作     者：Cao Wu Jing Wang Xiaohang Zhang Lixing Kang Xun Cao Yongyi Zhang Yutao Niu Yingying Yu Huili Fu Zongjie Shen Kunjie Wu Zhenzhong Yong Jingyun Zou Bin Wang Zhou Chen Zhengpeng Yang Qingwen Li Cao Wu;Jing Wang;Xiaohang Zhang;Lixing Kang;Xun Cao;Yongyi Zhang;Yutao Niu;Yingying Yu;Huili Fu;Zongjie Shen;Kunjie Wu;Zhenzhong Yong;Jingyun Zou;Bin Wang;Zhou Chen;Zhengpeng Yang;Qingwen Li

作者机构：Key Laboratory of Multifunctional Nanomaterials and Smart SystemsAdvanced Materials DivisionSuzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of SciencesSuzhou 215123JiangsuPeople’s Republic of China School of ScienceNanchang Institute of TechnologyNanchang 330099JiangxiPeople’s Republic of China Division of Nanomaterials and Jiangxi Key Lab of Carbonene MaterialsJiangxi Institute of NanotechnologyNanchang 330200JiangxiPeople’s Republic of China School of Nano-Tech and Nano-BionicsUniversity of Science and Technology of ChinaHefei 230026AnhuiPeople’s Republic of China School of Materials Science and EngineeringNanyang Technological University50 Nanyang AvenueSingapore 639798Singapore Jiangsu Key Laboratory of Micro and Nano Heat Fluid Flow Technology and Energy ApplicationSchool of Physical Science and TechnologySuzhou University of Science and TechnologySuzhou 215009People’s Republic of China School of Mechanical and Power EngineeringNanjing Tech UniversityNanjing 211800People’s Republic of China Henan Key Laboratory of Materials On Deep-Earth EngineeringSchool of Materials Science and EngineeringHenan Polytechnic UniversityJiaozuo 454003People’s Republic of China College of Safety Science and EngineeringXi’an University of Science and TechnologyXi’an 710054People’s Republic of China 

出 版 物：《Nano-Micro Letters》 (纳微快报（英文版）)

年 卷 期：2023年第15卷第1期

页      面：144-160页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：the National Natural Science Foundation of China(52102372,52162007,52163032) China Postdoctoral Science Foundation(2022M712321) the Jiangsu Province Postdoctoral Research Funding Program(2021K473C). 

主　　题：Gradient structures Carbon nanospheres Electromagnetic wave absorption Impedance matching 

摘      要：In the present paper,a microwave absorber with nanoscale gradient structure was proposed for enhancing the electromagnetic absorption performance.The inorganic-organic competitive coating strategy was employed,which can effectively adjust the thermodynamic and kinetic reactions of iron ions during the solvothermal process.As a result,Fe nanoparticles can be gradually decreased from the inner side to the surface across the hollow carbon shell.The results reveal that it offers an outstanding reflection loss value in combination with broadband wave absorption and flexible adjustment ability,which is superior to other relative graded distribution structures and satisfied with the requirements of lightweight equipment.In addition,this work elucidates the intrinsic microwave regulation mechanism of the multiscale hybrid electromagnetic wave absorber.The excellent impedance matching and moderate dielectric parameters are exhibited to be the dominative factors for the promotion of microwave absorption performance of the optimized materials.This strategy to prepare gradient-distributed microwave absorbing materials initiates a new way for designing and fabricating wave absorber with excellent impedance matching property in practical applications.