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Identification of the Intrinsic Dielectric Properties of Metal Single Atoms for Electromagnetic Wave Absorption
Atomically dispersed metals on N-doped carbon supports (M–N(x)Cs) have great potential applications in various fields. However, a precise understanding of the definitive relationship between the configuration of metal single atoms and the dielectric loss properties of M–N(x)Cs at the atomic-level is...
Autores principales: | , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Springer Nature Singapore
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8665961/ https://www.ncbi.nlm.nih.gov/pubmed/34894293 http://dx.doi.org/10.1007/s40820-021-00773-6 |
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author | Zhang, Xinci Shi, Yanan Xu, Jia Ouyang, Qiuyun Zhang, Xiao Zhu, Chunling Zhang, Xiaoli Chen, Yujin |
author_facet | Zhang, Xinci Shi, Yanan Xu, Jia Ouyang, Qiuyun Zhang, Xiao Zhu, Chunling Zhang, Xiaoli Chen, Yujin |
author_sort | Zhang, Xinci |
collection | PubMed |
description | Atomically dispersed metals on N-doped carbon supports (M–N(x)Cs) have great potential applications in various fields. However, a precise understanding of the definitive relationship between the configuration of metal single atoms and the dielectric loss properties of M–N(x)Cs at the atomic-level is still lacking. Herein, we report a general approach to synthesize a series of three-dimensional (3D) honeycomb-like M–N(x)C (M = Mn, Fe, Co, Cu, or Ni) containing metal single atoms. Experimental results indicate that 3D M–N(x)Cs exhibit a greatly enhanced dielectric loss compared with that of the NC matrix. Theoretical calculations demonstrate that the density of states of the d orbitals near the Fermi level is significantly increased and additional electrical dipoles are induced due to the destruction of the symmetry of the local microstructure, which enhances conductive loss and dipolar polarization loss of 3D M–N(x)Cs, respectively. Consequently, these 3D M–N(x)Cs exhibit excellent electromagnetic wave absorption properties, outperforming the most commonly reported absorbers. This study systematically explains the mechanism of dielectric loss at the atomic level for the first time and is of significance to the rational design of high-efficiency electromagnetic wave absorbing materials containing metal single atoms. [Image: see text] SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1007/s40820-021-00773-6. |
format | Online Article Text |
id | pubmed-8665961 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | Springer Nature Singapore |
record_format | MEDLINE/PubMed |
spelling | pubmed-86659612021-12-27 Identification of the Intrinsic Dielectric Properties of Metal Single Atoms for Electromagnetic Wave Absorption Zhang, Xinci Shi, Yanan Xu, Jia Ouyang, Qiuyun Zhang, Xiao Zhu, Chunling Zhang, Xiaoli Chen, Yujin Nanomicro Lett Article Atomically dispersed metals on N-doped carbon supports (M–N(x)Cs) have great potential applications in various fields. However, a precise understanding of the definitive relationship between the configuration of metal single atoms and the dielectric loss properties of M–N(x)Cs at the atomic-level is still lacking. Herein, we report a general approach to synthesize a series of three-dimensional (3D) honeycomb-like M–N(x)C (M = Mn, Fe, Co, Cu, or Ni) containing metal single atoms. Experimental results indicate that 3D M–N(x)Cs exhibit a greatly enhanced dielectric loss compared with that of the NC matrix. Theoretical calculations demonstrate that the density of states of the d orbitals near the Fermi level is significantly increased and additional electrical dipoles are induced due to the destruction of the symmetry of the local microstructure, which enhances conductive loss and dipolar polarization loss of 3D M–N(x)Cs, respectively. Consequently, these 3D M–N(x)Cs exhibit excellent electromagnetic wave absorption properties, outperforming the most commonly reported absorbers. This study systematically explains the mechanism of dielectric loss at the atomic level for the first time and is of significance to the rational design of high-efficiency electromagnetic wave absorbing materials containing metal single atoms. [Image: see text] SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1007/s40820-021-00773-6. Springer Nature Singapore 2021-12-11 /pmc/articles/PMC8665961/ /pubmed/34894293 http://dx.doi.org/10.1007/s40820-021-00773-6 Text en © The Author(s) 2021 https://creativecommons.org/licenses/by/4.0/Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . |
spellingShingle | Article Zhang, Xinci Shi, Yanan Xu, Jia Ouyang, Qiuyun Zhang, Xiao Zhu, Chunling Zhang, Xiaoli Chen, Yujin Identification of the Intrinsic Dielectric Properties of Metal Single Atoms for Electromagnetic Wave Absorption |
title | Identification of the Intrinsic Dielectric Properties of Metal Single Atoms for Electromagnetic Wave Absorption |
title_full | Identification of the Intrinsic Dielectric Properties of Metal Single Atoms for Electromagnetic Wave Absorption |
title_fullStr | Identification of the Intrinsic Dielectric Properties of Metal Single Atoms for Electromagnetic Wave Absorption |
title_full_unstemmed | Identification of the Intrinsic Dielectric Properties of Metal Single Atoms for Electromagnetic Wave Absorption |
title_short | Identification of the Intrinsic Dielectric Properties of Metal Single Atoms for Electromagnetic Wave Absorption |
title_sort | identification of the intrinsic dielectric properties of metal single atoms for electromagnetic wave absorption |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8665961/ https://www.ncbi.nlm.nih.gov/pubmed/34894293 http://dx.doi.org/10.1007/s40820-021-00773-6 |
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