1
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The monodisperse nickel phosphide mosaic nanocrystals in situ grown on reduced graphene oxide with excellent electromagnetic wave absorption properties. J SOLID STATE CHEM 2021. [DOI: 10.1016/j.jssc.2021.122234] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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2
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Wen J, Li X, Chen G, Wang Z, Zhou X, Wu H. Controllable adjustment of cavity of core-shelled Co 3O 4@NiCo 2O 4 composites via facile etching and deposition for electromagnetic wave absorption. J Colloid Interface Sci 2021; 594:424-434. [PMID: 33774398 DOI: 10.1016/j.jcis.2021.03.056] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Revised: 03/09/2021] [Accepted: 03/10/2021] [Indexed: 12/14/2022]
Abstract
Core-shell structural cobalt- and nickel-based metal oxides with different compositions have rarely been reported as electromagnetic wave absorption materials. Herein, core-shell structural Co3O4@NiCo2O4 composites have been successfully fabricated via simple etching and deposition reaction of Co-based metal-organic framework with subsequent calcination in air. According to morphological evolution, it is verified that the cavity volume between Co3O4 core and NiCo2O4 shell could be modulated effectively by simply controlling proton etching and deposition reaction. The electromagnetic wave absorption properties of the Co3O4@NiCo2O4 composites were investigate. It was demonstrated that multiple interfacial polarization of heterogeneous interfaces involving cavities, such as Co3O4/Void, Void/NiCo2O4 and Co3O4/NiCo2O4 have made great contribution to the excellent electromagnetic wave absorption performance. Co3O4@NiCo2O4 with optimized microstructure exhibited RL value as strong as -34.42 dB with a broad effective absorption bandwidth up to 4.88 GHz at a layer thickness of 2.6 mm. It is believed that core-shell structural cobalt- and nickel-based metal oxides will become an excellent candidate for high-performance electromagnetic wave absorber.
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Affiliation(s)
- Junwu Wen
- School of Advanced Materials and Nanotechnology, Xidian University, Xi'an 710071, China
| | - Xuexiang Li
- MOE Key Laboratory of Material Physics and Chemistry under Extraordinary, Northwestern Polytechnical University, Xi'an 710072, China
| | - Geng Chen
- MOE Key Laboratory of Material Physics and Chemistry under Extraordinary, Northwestern Polytechnical University, Xi'an 710072, China
| | - Zhenni Wang
- School of Advanced Materials and Nanotechnology, Xidian University, Xi'an 710071, China
| | - Xuejiao Zhou
- School of Advanced Materials and Nanotechnology, Xidian University, Xi'an 710071, China.
| | - Hongjing Wu
- MOE Key Laboratory of Material Physics and Chemistry under Extraordinary, Northwestern Polytechnical University, Xi'an 710072, China.
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3
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Qin Y, Wang M, Gao W, Liang S. Rationally designed structure of mesoporous carbon hollow microspheres to acquire excellent microwave absorption performance. RSC Adv 2021; 11:14787-14795. [PMID: 35423987 PMCID: PMC8698231 DOI: 10.1039/d1ra00465d] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Accepted: 03/25/2021] [Indexed: 02/01/2023] Open
Abstract
In this study, we used a novel and facile hard-template etching method to manufacture mesoporous carbon hollow microspheres (MCHMs). We prove that the dielectric ability and microwave absorption of MCHMs can be adjusted by structural characteristics. When the average particle size of MCHMs is 452 nm, the paraffin composite material mixed with 10 wt% MCHMs can achieve a maximum reflection loss value of -51 dB with a thickness of 4.0 mm at 7.59 GHz. When the average particle size of MCHMs is 425 nm, the effective absorption bandwidth of the paraffin composite material mixed with 10 wt% MCHMs can achieve a broad bandwidth of 7.14 GHz with a thickness of 2.5 mm. Compared with other microwave absorbers, MCHMs possess high microwave absorption capacity and broad microwave absorption bandwidth with as low as a 10 wt% filler ratio. This excellent microwave absorption performance is due to the internal cavity and the mesoporous shell of MCHMs. By rationally designing the structure of MCHMs, excellent microwave absorption performance can be acquired. Meanwhile, this design concept based on a rational design of spherical structure can be extended to other spherical absorbers.
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Affiliation(s)
- Yuxuan Qin
- School of Resources, Environment and Materials, Guangxi University Nanning 530000 Guangxi China
| | - Muqun Wang
- School of Resources, Environment and Materials, Guangxi University Nanning 530000 Guangxi China
| | - Wei Gao
- School of Resources, Environment and Materials, Guangxi University Nanning 530000 Guangxi China
- Guangxi Engineering and Technology Research Center for High Quality Structural Panels from Biomass Wastes Nanning 530000 Guangxi China
| | - Shaofeng Liang
- School of Resources, Environment and Materials, Guangxi University Nanning 530000 Guangxi China
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4
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Qin M, Zhang L, Zhao X, Wu H. Defect Induced Polarization Loss in Multi-Shelled Spinel Hollow Spheres for Electromagnetic Wave Absorption Application. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2021; 8:2004640. [PMID: 33898201 PMCID: PMC8061380 DOI: 10.1002/advs.202004640] [Citation(s) in RCA: 61] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Indexed: 05/29/2023]
Abstract
Defect engineering is an effective approach to manipulate electromagnetic (EM) parameters and enhance absorption ability, but defect induced dielectric loss dominant mechanism has not been completely clarified. Here the defect induced dielectric loss dominant mechanism in virtue of multi-shelled spinel hollow sphere for the first time is demonstrated. The unique but identical morphology design as well as suitable composition modulation for serial spinels can exclude the disturbance of EM wave dissipation from dipolar/interfacial polarization and conduction loss. In temperature-regulated defect in NiCo2O4 serial materials, two kinds of defects, defect in spinel structure and oxygen vacancy are detected. Defect in spinel structure played more profound role on determining materials' EM wave dissipation than that of oxygen vacancy. When evaluated serial Co-based materials as absorbers, defect induced polarization loss is responsible for the superior absorption performance of NiCo2O4-based material due to its more defect sites in spinel structure. It is discovered that electron spin resonance test may be adopted as a novel approach to directly probe EM wave absorption capacities of materials. This work not only provides a strategy to prepare lightweight, efficient EM wave absorber but also illustrates the importance of defect engineering on regulation of materials' dielectric loss capacity.
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Affiliation(s)
- Ming Qin
- MOE Key Laboratory of Material Physics and Chemistry under ExtraordinarySchool of Physical Science and TechnologyNorthwestern Polytechnical UniversityXi'an710072China
| | - Limin Zhang
- MOE Key Laboratory of Material Physics and Chemistry under ExtraordinarySchool of Physical Science and TechnologyNorthwestern Polytechnical UniversityXi'an710072China
| | - Xiaoru Zhao
- MOE Key Laboratory of Material Physics and Chemistry under ExtraordinarySchool of Physical Science and TechnologyNorthwestern Polytechnical UniversityXi'an710072China
| | - Hongjing Wu
- MOE Key Laboratory of Material Physics and Chemistry under ExtraordinarySchool of Physical Science and TechnologyNorthwestern Polytechnical UniversityXi'an710072China
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5
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Mondal S, Ravindren R, Shin B, Kim S, Lee H, Ganguly S, Das NC, Nah C. Electrical conductivity and electromagnetic interference shielding effectiveness of nano‐structured carbon assisted poly(methyl methacrylate) nanocomposites. POLYM ENG SCI 2020. [DOI: 10.1002/pen.25480] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Subhadip Mondal
- BK21 Haptic Polymer Composite Research Team, Department of Polymer‐Nano Science and Technology Jeonbuk National University Jeonju South Korea
| | - Revathy Ravindren
- Rubber Technology Centre Indian Institute of Technology Kharagpur India
| | - Beomsu Shin
- BK21 Haptic Polymer Composite Research Team, Department of Polymer‐Nano Science and Technology Jeonbuk National University Jeonju South Korea
| | - Suhyun Kim
- BK21 Haptic Polymer Composite Research Team, Department of Polymer‐Nano Science and Technology Jeonbuk National University Jeonju South Korea
| | - Hyunsang Lee
- BK21 Haptic Polymer Composite Research Team, Department of Polymer‐Nano Science and Technology Jeonbuk National University Jeonju South Korea
| | - Sayan Ganguly
- Rubber Technology Centre Indian Institute of Technology Kharagpur India
| | - Narayan Ch. Das
- Rubber Technology Centre Indian Institute of Technology Kharagpur India
| | - Changwoon Nah
- BK21 Haptic Polymer Composite Research Team, Department of Polymer‐Nano Science and Technology Jeonbuk National University Jeonju South Korea
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6
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Kim K, Park MJ. Ice-assisted synthesis of functional nanomaterials: the use of quasi-liquid layers as nanoreactors and reaction accelerators. NANOSCALE 2020; 12:14320-14338. [PMID: 32458875 DOI: 10.1039/d0nr02624g] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The discovery of peculiar quasi-liquid layers on ice surfaces marks a major breakthrough in ice-related sciences, as the facile tuning of the reactions and morphologies of substances in contact with these layers make ice-assisted chemistry a low-cost, environmentally benign, and ubiquitous methodology for the synthesis of nanomaterials with improved functionality. Ice-templated synthesis of porous materials offers the appealing features of rapid self-organization and remarkable property changes arising from confinement effects and affords materials that have found a diverse range of applications such as batteries, supercapacitors, and gas separation. Moreover, much attention has been drawn to the acceleration of chemical reactions and transformations on the ice surface due to the freeze concentration effect, fast self-diffusion of surface water, and modulated surface potential energy. Some of these results are related to the accumulation of inorganic contaminants in glaciers and the blockage of natural gas pipelines. As an emerging theme in nanomaterial design, the dimension-controlled synthesis of hybrid materials with unprecedentedly enhanced properties on ice surfaces has attracted much interest. However, a deep understanding of quasi-liquid layer characteristics (and hence, the development of cutting-edge analytical technologies with high surface sensitivity) is required to achieve the current goal of ice-assisted chemistry, namely the preparation of tailor-made materials with the desired properties.
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Affiliation(s)
- Kyoungwook Kim
- Department of Chemistry, Division of Materials Science, Pohang University of Science and Technology (POSTECH), Pohang, Korea 790-784.
| | - Moon Jeong Park
- Department of Chemistry, Division of Materials Science, Pohang University of Science and Technology (POSTECH), Pohang, Korea 790-784.
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7
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Xu J, Xia L, Luo J, Lu S, Huang X, Zhong B, Zhang T, Wen G, Wu X, Xiong L, Wang G. High-Performance Electromagnetic Wave Absorbing CNT/SiC f Composites: Synthesis, Tuning, and Mechanism. ACS APPLIED MATERIALS & INTERFACES 2020; 12:20775-20784. [PMID: 32282186 DOI: 10.1021/acsami.9b19281] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
High-performance electromagnetic (EM) wave absorbing materials are strongly desired in many fields like portable devices and aircraft. Introducing carbon nanotubes (CNTs) to certain materials has been proved to be an effective method leading to good EM wave absorption capability. In this work, CNTs are successfully synthesized on SiC fibers with high speed by using a newly developed method which is far more efficient than the commonly used one. The obtained CNT/SiCf composites exhibit high-performance EM wave absorption capability. With 0.72 wt % CNTs, the reflection loss of the 4 mm composite with only 20 wt % filler loading reaches -62.5 dB with the broad effective absorption bandwidth of 8.8 GHz, covering almost the entire Ku band and three-quarters X band. Moreover, the composites can be added to varying matrices so as to modify their EM wave absorption and other properties. The EM wave absorption performance can be easily tuned in a wide range by varying the CNT content, thickness, and filler loading. This work offers a new route for efficiently synthesizing CNTs but, more importantly, for designing high-performance and multifunctional EM wave absorbing materials.
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Affiliation(s)
- Jiaming Xu
- School of Materials Science and Engineering, Harbin Institute of Technology at Weihai, Weihai 264209, China
| | - Long Xia
- School of Materials Science and Engineering, Harbin Institute of Technology at Weihai, Weihai 264209, China
| | - Juhua Luo
- School of Materials Science and Engineering, Yancheng Institute of Technology, Yancheng 224051, China
| | - Siru Lu
- School of Materials Science and Engineering, Harbin Institute of Technology at Weihai, Weihai 264209, China
| | - Xiaoxiao Huang
- School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China
| | - Bo Zhong
- School of Materials Science and Engineering, Harbin Institute of Technology at Weihai, Weihai 264209, China
| | - Tao Zhang
- School of Materials Science and Engineering, Harbin Institute of Technology at Weihai, Weihai 264209, China
| | - Guangwu Wen
- School of Materials Science and Engineering, Shandong University of Technology, Zibo 255000, China
| | - Xin Wu
- School of Materials Science and Engineering, Harbin Institute of Technology at Weihai, Weihai 264209, China
| | - Li Xiong
- School of Materials Science and Engineering, Harbin Institute of Technology at Weihai, Weihai 264209, China
| | - Gang Wang
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
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8
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Cai Z, Su L, Wang H, Niu M, Gao H, Lu D, Li M. Hydrophobic SiC@C Nanowire Foam with Broad-Band and Mechanically Controlled Electromagnetic Wave Absorption. ACS APPLIED MATERIALS & INTERFACES 2020; 12:8555-8562. [PMID: 31985205 DOI: 10.1021/acsami.9b20636] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
With the booming of modern information technology, electromagnetic wave (EMW) absorption materials are playing more and more crucial roles in applications ranging from wearable smart electronics to national defense security. However, the application of present EMW absorption materials is severely hindered by their drawbacks, such as narrow absorption bandwidth and low absorption intensity. In this work, a series of highly porous and well-interconnected SiC@C nanowire foams (SCNFs) are rationally designed to exhibit modified impedance match and multiscale EMW energy dissipation mechanisms. The SCNF with a density of 108 mg cm-3 realizes a broad absorption bandwidth covering the whole X and Ku bands with an intensity of -52.5 dB. The SCNF with a density of 36 mg cm-3 and a thickness of 9.6 mm exhibits a mechanically controlled absorption band ranging from 2.9 to 18 GHz (covering over 93% of the entire radar band, 2-18 GHz) with a minimum intensity of -46 dB by simply applying a reversible compressive strain from 0 to 66.7%. Moreover, the special microstructure of SCNF also endows it with excellent hydrophobicity, which enables its good self-cleaning property. These encouraging achievements pave the way to the development of the continuous network microstructure of absorbents with a broad-band and tunable EMW absorption property.
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Affiliation(s)
- Zhixin Cai
- State Key Laboratory for Mechanical Behavior of Materials , Xi'an Jiaotong University , Xi'an 710049 , China
| | - Lei Su
- State Key Laboratory for Mechanical Behavior of Materials , Xi'an Jiaotong University , Xi'an 710049 , China
| | - Hongjie Wang
- State Key Laboratory for Mechanical Behavior of Materials , Xi'an Jiaotong University , Xi'an 710049 , China
| | - Min Niu
- State Key Laboratory for Mechanical Behavior of Materials , Xi'an Jiaotong University , Xi'an 710049 , China
| | - Hongfei Gao
- State Key Laboratory for Mechanical Behavior of Materials , Xi'an Jiaotong University , Xi'an 710049 , China
| | - De Lu
- State Key Laboratory for Mechanical Behavior of Materials , Xi'an Jiaotong University , Xi'an 710049 , China
| | - Mingzhu Li
- State Key Laboratory for Mechanical Behavior of Materials , Xi'an Jiaotong University , Xi'an 710049 , China
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9
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Li Q, Zhang Z, Qi L, Liao Q, Kang Z, Zhang Y. Toward the Application of High Frequency Electromagnetic Wave Absorption by Carbon Nanostructures. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2019; 6:1801057. [PMID: 31016105 PMCID: PMC6468972 DOI: 10.1002/advs.201801057] [Citation(s) in RCA: 90] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2018] [Revised: 01/11/2019] [Indexed: 05/18/2023]
Abstract
With the booming development of electronic information technology, the problems caused by electromagnetic (EMs) waves have gradually become serious, and EM wave absorption materials are playing an essential role in daily life. Carbon nanostructures stand out for their unique structures and properties compared with the other absorption materials. Graphene, carbon nanotubes, and other special carbon nanostructures have become especially significant as EM wave absorption materials in the high-frequency range. Moreover, various nanocomposites based on carbon nanostructures and other lossy materials can be modified as high-performance absorption materials. Here, the EM wave absorption theories of carbon nanostructures are introduced and recent advances of carbon nanostructures for high-frequency EM wave absorption are summarized. Meanwhile, the shortcomings, challenges, and prospects of carbon nanostructures for high-frequency EM wave absorption are presented. Carbon nanostructures are typical EM wave absorption materials being lightweight and having broadband properties. Carbon nanostructures and related nanocomposites represent the developing orientation of high-performance EM wave absorption materials.
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Affiliation(s)
- Qi Li
- State Key Laboratory for Advanced Metals and MaterialsSchool of Materials Science and EngineeringUniversity of Science and Technology BeijingBeijing100083China
- Beijing Key Laboratory of Advanced Energy Materials and TechnologiesUniversity of Science and Technology BeijingBeijing100083China
| | - Zheng Zhang
- State Key Laboratory for Advanced Metals and MaterialsSchool of Materials Science and EngineeringUniversity of Science and Technology BeijingBeijing100083China
- Beijing Key Laboratory of Advanced Energy Materials and TechnologiesUniversity of Science and Technology BeijingBeijing100083China
| | - Luping Qi
- State Key Laboratory for Advanced Metals and MaterialsSchool of Materials Science and EngineeringUniversity of Science and Technology BeijingBeijing100083China
- Beijing Key Laboratory of Advanced Energy Materials and TechnologiesUniversity of Science and Technology BeijingBeijing100083China
| | - Qingliang Liao
- State Key Laboratory for Advanced Metals and MaterialsSchool of Materials Science and EngineeringUniversity of Science and Technology BeijingBeijing100083China
- Beijing Key Laboratory of Advanced Energy Materials and TechnologiesUniversity of Science and Technology BeijingBeijing100083China
| | - Zhuo Kang
- State Key Laboratory for Advanced Metals and MaterialsSchool of Materials Science and EngineeringUniversity of Science and Technology BeijingBeijing100083China
- Beijing Key Laboratory of Advanced Energy Materials and TechnologiesUniversity of Science and Technology BeijingBeijing100083China
| | - Yue Zhang
- State Key Laboratory for Advanced Metals and MaterialsSchool of Materials Science and EngineeringUniversity of Science and Technology BeijingBeijing100083China
- Beijing Key Laboratory of Advanced Energy Materials and TechnologiesUniversity of Science and Technology BeijingBeijing100083China
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10
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González M, Pozuelo J, Baselga J. Electromagnetic Shielding Materials in GHz Range. CHEM REC 2018; 18:1000-1009. [PMID: 29380939 DOI: 10.1002/tcr.201700066] [Citation(s) in RCA: 70] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2017] [Accepted: 01/16/2018] [Indexed: 11/09/2022]
Abstract
The state-of-the art in the design and the manufacture methods of the different electromagnetic shielding materials has been reviewed. This topic has become a mainstream field of research because of the electromagnetic pollution generated by telecommunication technology development. The review is centred in absorbent materials and shows a general overview of how the absorption properties of such composites can be tailored through changes in geometry, composition, morphology, and the filler particles content. Although different types of materials are explained, the text is mainly focused on carbon materials such as graphene and carbon nanotubes. In this way, the importance of the dispersion of the conductive fillers in different polymer matrices is discussed. In addition, an extensive study on new complex architectures such as foam-based materials is presented. Finally, the combination of carbon fillers with other constituents such as metallic nanoparticles is mentioned. In all these studies, the efficiency of the composites as absorbent or reflective of electromagnetic radiation is discussed.
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Affiliation(s)
- Marta González
- Departmento de Ciencia e Ingeniería de Materiales e Ingeniería Química (IAAB), Universidad Carlos III de Madrid, Avda. de la Universidad, 30, 28911) Leganés, Madrid, Spain
| | - Javier Pozuelo
- Departmento de Ciencia e Ingeniería de Materiales e Ingeniería Química (IAAB), Universidad Carlos III de Madrid, Avda. de la Universidad, 30, 28911) Leganés, Madrid, Spain
| | - Juan Baselga
- Departmento de Ciencia e Ingeniería de Materiales e Ingeniería Química (IAAB), Universidad Carlos III de Madrid, Avda. de la Universidad, 30, 28911) Leganés, Madrid, Spain
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11
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Song WL, Gong C, Li H, Cheng XD, Chen M, Yuan X, Chen H, Yang Y, Fang D. Graphene-Based Sandwich Structures for Frequency Selectable Electromagnetic Shielding. ACS APPLIED MATERIALS & INTERFACES 2017; 9:36119-36129. [PMID: 28945066 DOI: 10.1021/acsami.7b08229] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
Due to substantial development of electronics and telecommunication techniques, materials with electromagnetic interference (EMI) shielding performance are significant in alleviating the interference impacts induced from a remarkable variety of devices. In the work, we propose novel sandwich structures for manipulating the EM wave transport, which holds unique EMI shielding features of frequency selectivity. By employing electrical and magnetic loss spacers, the resultant sandwich structures are endowed with tunable EMI shielding performance, showing substantial improvements in overall shielding effectiveness along with pronounced shielding peak shift. The mechanisms suggest that the multiple interfaces, electromagnetic loss media, and changes of representative EM wavelength could be critical roles in tailoring the EMI shielding performance. The results provide a versatile strategy that could be extended in other frequency ranges and various types of sandwich structures, promising great opportunities for designing and fabricating advanced electromagnetic attenuation materials and devices.
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Affiliation(s)
- Wei-Li Song
- Institute of Advanced Structure Technology, Beijing Institute of Technology , Beijing 100081, P.R. China
- Beijing Key Laboratory of Lightweight Multi-functional Composite Materials and Structures, Beijing Institute of Technology , Beijing 100081, P.R. China
| | - Congcheng Gong
- School of Electrical and Information Engineering, Beijing University of Civil Engineering and Architecture , Beijing 100044, P.R. China
| | - Huimin Li
- Institute of Advanced Structure Technology, Beijing Institute of Technology , Beijing 100081, P.R. China
- Beijing Key Laboratory of Lightweight Multi-functional Composite Materials and Structures, Beijing Institute of Technology , Beijing 100081, P.R. China
- State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology , Beijing 100081, China
| | - Xiao-Dong Cheng
- Institute of Advanced Structure Technology, Beijing Institute of Technology , Beijing 100081, P.R. China
- Beijing Key Laboratory of Lightweight Multi-functional Composite Materials and Structures, Beijing Institute of Technology , Beijing 100081, P.R. China
| | - Mingji Chen
- Institute of Advanced Structure Technology, Beijing Institute of Technology , Beijing 100081, P.R. China
- Beijing Key Laboratory of Lightweight Multi-functional Composite Materials and Structures, Beijing Institute of Technology , Beijing 100081, P.R. China
- Collaborative Innovation Center of Electric Vehicles in Beijing , Beijing 100081, P.R. China
| | - Xujin Yuan
- Institute of Advanced Structure Technology, Beijing Institute of Technology , Beijing 100081, P.R. China
- Beijing Key Laboratory of Lightweight Multi-functional Composite Materials and Structures, Beijing Institute of Technology , Beijing 100081, P.R. China
| | - Haosen Chen
- Institute of Advanced Structure Technology, Beijing Institute of Technology , Beijing 100081, P.R. China
- Beijing Key Laboratory of Lightweight Multi-functional Composite Materials and Structures, Beijing Institute of Technology , Beijing 100081, P.R. China
- Collaborative Innovation Center of Electric Vehicles in Beijing , Beijing 100081, P.R. China
| | - Yazheng Yang
- Institute of Advanced Structure Technology, Beijing Institute of Technology , Beijing 100081, P.R. China
- State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology , Beijing 100081, China
- Collaborative Innovation Center of Electric Vehicles in Beijing , Beijing 100081, P.R. China
| | - Daining Fang
- Institute of Advanced Structure Technology, Beijing Institute of Technology , Beijing 100081, P.R. China
- Beijing Key Laboratory of Lightweight Multi-functional Composite Materials and Structures, Beijing Institute of Technology , Beijing 100081, P.R. China
- State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology , Beijing 100081, China
- Collaborative Innovation Center of Electric Vehicles in Beijing , Beijing 100081, P.R. China
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12
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Xu H, Yin X, Zhu M, Han M, Hou Z, Li X, Zhang L, Cheng L. Carbon Hollow Microspheres with a Designable Mesoporous Shell for High-Performance Electromagnetic Wave Absorption. ACS APPLIED MATERIALS & INTERFACES 2017; 9:6332-6341. [PMID: 28107618 DOI: 10.1021/acsami.6b15826] [Citation(s) in RCA: 75] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
In this work, mesoporous carbon hollow microspheres (PCHMs) with designable mesoporous shell and interior void are constructed by a facile in situ stöber templating approach and a pyrolysis-etching process. The PCHMs are characterized by scanning electron microscopy, transmission electron microscopy, X-ray photoelectron spectra, Raman spectroscopy, and nitrogen adsorption and desorption system. A uniform mesoporous shell (pore size 4.7 nm) with a thickness of 55 nm and a cavity size of 345 nm is realized. The composite of paraffin mixed with 20 wt % PCHMs exhibits a minimum reflection coefficient (RCmin) of -84 dB at 8.2 GHz with a sample thickness of 3.9 mm and an effective absorption bandwidth (EAB) of 4.8 GHz below -10 dB (>90% electromagnetic wave is attenuated). Moreover, the composite of phenolic resin mixed with 20 wt % PCHMs exhibits an ultrawide EAB of 8 GHz below -10 dB with a thinner thickness of 2.15 mm. Such excellent electromagnetic wave absorption properties are ascribed to the large carbon-air interface in the mesoporous shell and interior void, which is favorable for the matching of characteristic impedance as compared with carbon hollow microspheres and carbon solid microspheres. Considering the excellent performance of PCHMs, we believe the as-fabricated PCHMs can be promising candidates as highly effective microwave absorbers, and the design philosophy can be extended to other spherical absorbers.
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Affiliation(s)
- Hailong Xu
- Science and Technology on Thermostructural Composite Materials Laboratory, Northwestern Polytechnical University , Xi'an 710072, China
| | - Xiaowei Yin
- Science and Technology on Thermostructural Composite Materials Laboratory, Northwestern Polytechnical University , Xi'an 710072, China
| | - Meng Zhu
- Science and Technology on Thermostructural Composite Materials Laboratory, Northwestern Polytechnical University , Xi'an 710072, China
| | - Meikang Han
- Science and Technology on Thermostructural Composite Materials Laboratory, Northwestern Polytechnical University , Xi'an 710072, China
| | - Zexin Hou
- Science and Technology on Thermostructural Composite Materials Laboratory, Northwestern Polytechnical University , Xi'an 710072, China
| | - Xinliang Li
- Science and Technology on Thermostructural Composite Materials Laboratory, Northwestern Polytechnical University , Xi'an 710072, China
| | - Litong Zhang
- Science and Technology on Thermostructural Composite Materials Laboratory, Northwestern Polytechnical University , Xi'an 710072, China
| | - Laifei Cheng
- Science and Technology on Thermostructural Composite Materials Laboratory, Northwestern Polytechnical University , Xi'an 710072, China
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