Low‑Temperature Oxidation Induced Phase Evolution with Gradient Magnetic Heterointerfaces for Superior Electromagnetic Wave Absorption

作     者：Zizhuang He Lingzi Shi Ran Sun Lianfei Ding Mukun He Jiaming Li Hua Guo Tiande Gao Panbo Liu Zizhuang He;Lingzi Shi;Ran Sun;Lianfei Ding;Mukun He;Jiaming Li;Hua Guo;Tiande Gao;Panbo Liu

作者机构：School of Chemistry and Chemical EngineeringNorthwestern Polytechnical UniversityXi’an 710129People’s Republic of China School of Marine Science and TechnologyNorthwestern Polytechnical UniversityXi’an 710072People’s Republic of China 

基　　金：financially supported by the National Natural Science Foundation of China(52373271) Science,Technology and Innovation Commission of Shenzhen Municipality under Grant(KCXFZ20201221173004012) National Key Research and Development Program of Shaanxi Province(No.2023-YBNY-271) Open Testing Foundation of the Analytical&Testing Center of Northwestern Polytechnical University(2023T019) 

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

年 卷 期：2025年第17卷第1期

页      码：191-204页

摘      要：Gradient magnetic heterointerfaces have injected infinite vitality in optimizing impedance matching,adjusting dielectric/magnetic resonance and promoting electromagnetic(EM)wave absorption,but still exist a significant challenging in regulating local phase ***,accordion-shaped Co/Co_(3)O_(4)@N-doped carbon nanosheets(Co/Co_(3)O_(4)@NC)with gradient magnetic heterointerfaces have been fabricated via the cooperative high-temperature carbonization and lowtemperature oxidation *** results indicate that the surface epitaxial growth of crystal Co_(3)O_(4) domains on local Co nanoparticles realizes the adjustment of magnetic-heteroatomic components,which are beneficial for optimizing impedance matching and interfacial ***,gradient magnetic heterointerfaces simultaneously realize magnetic coupling,and long-range magnetic ***,the synthesized Co/Co_(3)O_(4)@NC absorbents display the strong electromagnetic wave attenuation capability of−53.5 dB at a thickness of 3.0 mm with an effective absorption bandwidth of 5.36 GHz,both are superior to those of single magnetic domains embedded in carbon *** design concept provides us an inspiration in optimizing interfacial polarization,regulating magnetic coupling and promoting electromagnetic wave absorption.

主 题 词：Magnetic heterointerfaces Phase evolution Interfacial polarization Magnetic coupling Electromagnetic wave absorption 

学科分类：08[工学] 080501[080501] 0805[工学-能源动力学] 

核心收录：

D　O　I：10.1007/s40820-024-01516-z

馆 藏 号：203143366...