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Na-ion Storage Performances of FeSe(x) and Fe(2)O(3) Hollow Nanoparticles-Decorated Reduced Graphene Oxide Balls prepared by Nanoscale Kirkendall Diffusion Process
Uniquely structured FeSe(x)-reduced graphene oxide (rGO) composite powders, in which hollow FeSe(x) nanoparticles are uniformly distributed throughout the rGO matrix, were prepared by spray pyrolysis applying the nanoscale Kirkendall diffusion process. Iron oxide-rGO composite powders were transform...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
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Nature Publishing Group
2016
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4774857/ https://www.ncbi.nlm.nih.gov/pubmed/26928312 http://dx.doi.org/10.1038/srep22432 |
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author | Park, Gi Dae Cho, Jung Sang Lee, Jung-Kul Kang, Yun Chan |
author_facet | Park, Gi Dae Cho, Jung Sang Lee, Jung-Kul Kang, Yun Chan |
author_sort | Park, Gi Dae |
collection | PubMed |
description | Uniquely structured FeSe(x)-reduced graphene oxide (rGO) composite powders, in which hollow FeSe(x) nanoparticles are uniformly distributed throughout the rGO matrix, were prepared by spray pyrolysis applying the nanoscale Kirkendall diffusion process. Iron oxide-rGO composite powders were transformed into FeSe(x)-rGO composite powders by a two-step post-treatment process. Metallic Fe nanocrystals formed during the first-step post-treatment process were transformed into hollow FeSe(x) nanoparticles during the selenization process. The FeSe(x)-rGO composite powders had mixed crystal structures of FeSe and FeSe(2) phases. A rGO content of 33% was estimated from the TG analysis of the FeSe(x)-rGO composite powders. The FeSe(x)-rGO composite powders had superior sodium-ion storage properties compared to those of the Fe(2)O(3)-rGO composite powders with similar morphological characteristics. The discharge capacities of the FeSe(x)- and Fe(2)O(3)-rGO composite powders for the 200(th) cycle at a constant current density of 0.3 A g(−1) were 434 and 174 mA h g(−1), respectively. The FeSe(x)-rGO composite powders had a high discharge capacity of 311 mA h g(−1) for the 1000(th) cycle at a high current density of 1 A g(−1). |
format | Online Article Text |
id | pubmed-4774857 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2016 |
publisher | Nature Publishing Group |
record_format | MEDLINE/PubMed |
spelling | pubmed-47748572016-05-10 Na-ion Storage Performances of FeSe(x) and Fe(2)O(3) Hollow Nanoparticles-Decorated Reduced Graphene Oxide Balls prepared by Nanoscale Kirkendall Diffusion Process Park, Gi Dae Cho, Jung Sang Lee, Jung-Kul Kang, Yun Chan Sci Rep Article Uniquely structured FeSe(x)-reduced graphene oxide (rGO) composite powders, in which hollow FeSe(x) nanoparticles are uniformly distributed throughout the rGO matrix, were prepared by spray pyrolysis applying the nanoscale Kirkendall diffusion process. Iron oxide-rGO composite powders were transformed into FeSe(x)-rGO composite powders by a two-step post-treatment process. Metallic Fe nanocrystals formed during the first-step post-treatment process were transformed into hollow FeSe(x) nanoparticles during the selenization process. The FeSe(x)-rGO composite powders had mixed crystal structures of FeSe and FeSe(2) phases. A rGO content of 33% was estimated from the TG analysis of the FeSe(x)-rGO composite powders. The FeSe(x)-rGO composite powders had superior sodium-ion storage properties compared to those of the Fe(2)O(3)-rGO composite powders with similar morphological characteristics. The discharge capacities of the FeSe(x)- and Fe(2)O(3)-rGO composite powders for the 200(th) cycle at a constant current density of 0.3 A g(−1) were 434 and 174 mA h g(−1), respectively. The FeSe(x)-rGO composite powders had a high discharge capacity of 311 mA h g(−1) for the 1000(th) cycle at a high current density of 1 A g(−1). Nature Publishing Group 2016-02-29 /pmc/articles/PMC4774857/ /pubmed/26928312 http://dx.doi.org/10.1038/srep22432 Text en Copyright © 2016, Macmillan Publishers Limited http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
spellingShingle | Article Park, Gi Dae Cho, Jung Sang Lee, Jung-Kul Kang, Yun Chan Na-ion Storage Performances of FeSe(x) and Fe(2)O(3) Hollow Nanoparticles-Decorated Reduced Graphene Oxide Balls prepared by Nanoscale Kirkendall Diffusion Process |
title | Na-ion Storage Performances of FeSe(x) and Fe(2)O(3) Hollow Nanoparticles-Decorated Reduced Graphene Oxide Balls prepared by Nanoscale Kirkendall Diffusion Process |
title_full | Na-ion Storage Performances of FeSe(x) and Fe(2)O(3) Hollow Nanoparticles-Decorated Reduced Graphene Oxide Balls prepared by Nanoscale Kirkendall Diffusion Process |
title_fullStr | Na-ion Storage Performances of FeSe(x) and Fe(2)O(3) Hollow Nanoparticles-Decorated Reduced Graphene Oxide Balls prepared by Nanoscale Kirkendall Diffusion Process |
title_full_unstemmed | Na-ion Storage Performances of FeSe(x) and Fe(2)O(3) Hollow Nanoparticles-Decorated Reduced Graphene Oxide Balls prepared by Nanoscale Kirkendall Diffusion Process |
title_short | Na-ion Storage Performances of FeSe(x) and Fe(2)O(3) Hollow Nanoparticles-Decorated Reduced Graphene Oxide Balls prepared by Nanoscale Kirkendall Diffusion Process |
title_sort | na-ion storage performances of fese(x) and fe(2)o(3) hollow nanoparticles-decorated reduced graphene oxide balls prepared by nanoscale kirkendall diffusion process |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4774857/ https://www.ncbi.nlm.nih.gov/pubmed/26928312 http://dx.doi.org/10.1038/srep22432 |
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