The enhanced dielectric property of the graphene composite anchored with non-planar iron single-atoms
The understanding of the relationships between the coordination configuration of single-atoms (SAs) and their properties remains a great challenge. In this manuscript, a facile method is developed to construct Fe-SAs on onion-like nitrogen-doped nanocarbons supported by graphene (ONCG). In contrast...
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Veröffentlicht in: | Applied physics letters 2022-08, Vol.121 (7) |
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creator | Shi, Yanan Li, Bei Jiang, Xinyu Zhang, Xiao Zhang, Xitian Chen, Yujin Zhu, Chunling |
description | The understanding of the relationships between the coordination configuration of single-atoms (SAs) and their properties remains a great challenge. In this manuscript, a facile method is developed to construct Fe-SAs on onion-like nitrogen-doped nanocarbons supported by graphene (ONCG). In contrast to the symmetrical planar Fe–N4 moieties, the Fe-SAs coordinated with N atoms are located above the plane of the curved graphene and exhibited antenna-like structures. The ONCG with non-planar Fe–N4 moieties possesses greatly increased dielectric loss property compared to their counterparts with symmetrical planar Fe-SAs. In-depth theoretical calculations reveal that the unique geometric structure of the non-planar Fe-SAs improves both conduction and polarization losses significantly, which is attributed to the increased dielectric property. The increased dielectric property endows Fe-SAs@ONCG with an excellent electromagnetic wave absorption at a low filler ratio of 10 wt. %. Our results describe an efficient way for the development of non-planar SAs for dielectric applications. |
doi_str_mv | 10.1063/5.0099781 |
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In this manuscript, a facile method is developed to construct Fe-SAs on onion-like nitrogen-doped nanocarbons supported by graphene (ONCG). In contrast to the symmetrical planar Fe–N4 moieties, the Fe-SAs coordinated with N atoms are located above the plane of the curved graphene and exhibited antenna-like structures. The ONCG with non-planar Fe–N4 moieties possesses greatly increased dielectric loss property compared to their counterparts with symmetrical planar Fe-SAs. In-depth theoretical calculations reveal that the unique geometric structure of the non-planar Fe-SAs improves both conduction and polarization losses significantly, which is attributed to the increased dielectric property. The increased dielectric property endows Fe-SAs@ONCG with an excellent electromagnetic wave absorption at a low filler ratio of 10 wt. %. Our results describe an efficient way for the development of non-planar SAs for dielectric applications.</description><identifier>ISSN: 0003-6951</identifier><identifier>EISSN: 1077-3118</identifier><identifier>DOI: 10.1063/5.0099781</identifier><identifier>CODEN: APPLAB</identifier><language>eng</language><publisher>Melville: American Institute of Physics</publisher><subject>Applied physics ; Dielectric loss ; Electromagnetic radiation ; Graphene ; Iron</subject><ispartof>Applied physics letters, 2022-08, Vol.121 (7)</ispartof><rights>Author(s)</rights><rights>2022 Author(s). 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In this manuscript, a facile method is developed to construct Fe-SAs on onion-like nitrogen-doped nanocarbons supported by graphene (ONCG). In contrast to the symmetrical planar Fe–N4 moieties, the Fe-SAs coordinated with N atoms are located above the plane of the curved graphene and exhibited antenna-like structures. The ONCG with non-planar Fe–N4 moieties possesses greatly increased dielectric loss property compared to their counterparts with symmetrical planar Fe-SAs. In-depth theoretical calculations reveal that the unique geometric structure of the non-planar Fe-SAs improves both conduction and polarization losses significantly, which is attributed to the increased dielectric property. The increased dielectric property endows Fe-SAs@ONCG with an excellent electromagnetic wave absorption at a low filler ratio of 10 wt. %. Our results describe an efficient way for the development of non-planar SAs for dielectric applications.</description><subject>Applied physics</subject><subject>Dielectric loss</subject><subject>Electromagnetic radiation</subject><subject>Graphene</subject><subject>Iron</subject><issn>0003-6951</issn><issn>1077-3118</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2022</creationdate><recordtype>article</recordtype><recordid>eNqdkE9LAzEQxYMoWKsHv0HAk8LWZLO72Ryl-A8KXuo5xGTSTWmTNUmVfnsjLXj3MsPA7817PISuKZlR0rH7dkaIELynJ2hCCecVo7Q_RRNCCKs60dJzdJHSupxtzdgEwXIADH5QXoPBxsEGdI5O4zGGEWLe42BxLswqqnEAD1iH7RiSy4CLZgixyL5dHrAPvho3yquIXQweJ-dXG6hUDtt0ic6s2iS4Ou4pen96XM5fqsXb8-v8YVFpVvNcJmeMCcUbIwC4UbyjLaXMguF9TWvSN6xmpjPKMCuA9NAIYJ22-kMpS2o2RTeHvyX95w5Sluuwi75YypqTpjQkisEU3R4oHUNKEawco9uquJeUyN8WZSuPLRb27sAm7bLKLvj_wV8h_oFyNJb9APMtgW4</recordid><startdate>20220815</startdate><enddate>20220815</enddate><creator>Shi, Yanan</creator><creator>Li, Bei</creator><creator>Jiang, Xinyu</creator><creator>Zhang, Xiao</creator><creator>Zhang, Xitian</creator><creator>Chen, Yujin</creator><creator>Zhu, Chunling</creator><general>American Institute of Physics</general><scope>AAYXX</scope><scope>CITATION</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope><orcidid>https://orcid.org/0000-0002-6794-2276</orcidid></search><sort><creationdate>20220815</creationdate><title>The enhanced dielectric property of the graphene composite anchored with non-planar iron single-atoms</title><author>Shi, Yanan ; Li, Bei ; Jiang, Xinyu ; Zhang, Xiao ; Zhang, Xitian ; Chen, Yujin ; Zhu, Chunling</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c327t-c373339a74d9ee7da7615113fed78212084323d6dad3f9e08e49e36cfcbaaf023</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2022</creationdate><topic>Applied physics</topic><topic>Dielectric loss</topic><topic>Electromagnetic radiation</topic><topic>Graphene</topic><topic>Iron</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Shi, Yanan</creatorcontrib><creatorcontrib>Li, Bei</creatorcontrib><creatorcontrib>Jiang, Xinyu</creatorcontrib><creatorcontrib>Zhang, Xiao</creatorcontrib><creatorcontrib>Zhang, Xitian</creatorcontrib><creatorcontrib>Chen, Yujin</creatorcontrib><creatorcontrib>Zhu, Chunling</creatorcontrib><collection>CrossRef</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Applied physics letters</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Shi, Yanan</au><au>Li, Bei</au><au>Jiang, Xinyu</au><au>Zhang, Xiao</au><au>Zhang, Xitian</au><au>Chen, Yujin</au><au>Zhu, Chunling</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>The enhanced dielectric property of the graphene composite anchored with non-planar iron single-atoms</atitle><jtitle>Applied physics letters</jtitle><date>2022-08-15</date><risdate>2022</risdate><volume>121</volume><issue>7</issue><issn>0003-6951</issn><eissn>1077-3118</eissn><coden>APPLAB</coden><abstract>The understanding of the relationships between the coordination configuration of single-atoms (SAs) and their properties remains a great challenge. In this manuscript, a facile method is developed to construct Fe-SAs on onion-like nitrogen-doped nanocarbons supported by graphene (ONCG). In contrast to the symmetrical planar Fe–N4 moieties, the Fe-SAs coordinated with N atoms are located above the plane of the curved graphene and exhibited antenna-like structures. The ONCG with non-planar Fe–N4 moieties possesses greatly increased dielectric loss property compared to their counterparts with symmetrical planar Fe-SAs. In-depth theoretical calculations reveal that the unique geometric structure of the non-planar Fe-SAs improves both conduction and polarization losses significantly, which is attributed to the increased dielectric property. The increased dielectric property endows Fe-SAs@ONCG with an excellent electromagnetic wave absorption at a low filler ratio of 10 wt. %. 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subjects | Applied physics Dielectric loss Electromagnetic radiation Graphene Iron |
title | The enhanced dielectric property of the graphene composite anchored with non-planar iron single-atoms |
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