A Salt-Templated Strategy toward Hollow Iron Selenides-Graphitic Carbon Composite Microspheres with Interconnected Multicavities as High-Performance Anode Materials for Sodium-Ion Batteries
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Choi, Jae Hun | - |
dc.contributor.author | Park, Seung-Keun | - |
dc.contributor.author | Kang, Yun Chan | - |
dc.date.accessioned | 2021-09-01T21:33:43Z | - |
dc.date.available | 2021-09-01T21:33:43Z | - |
dc.date.created | 2021-06-19 | - |
dc.date.issued | 2019-01-11 | - |
dc.identifier.issn | 1613-6810 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/68305 | - |
dc.description.abstract | In this work, a facile salt-templated approach is developed for the preparation of hollow FeSe2/graphitic carbon composite microspheres as sodium-ion battery anodes; these are composed of interconnected multicavities and an enclosed surface in-plane embedded with uniform hollow FeSe2 nanoparticles. As the precursor, Fe2O3/carbon microspheres containing NaCl nanocrystals are obtained using one-pot ultrasonic spray pyrolysis in which inexpensive NaCl and dextrin are used as a porogen and carbon source, respectively, enabling mass production of the composites. During post-treatment, Fe2O3 nanoparticles in the composites transform into hollow FeSe2 nanospheres via the Kirkendall effect. These rational structures provide numerous conductive channels to facilitate ion/electron transport and enhance the capacitive contribution. Moreover, the synergistic effect between the hollow cavities within FeSe2 and the outstanding mechanical strength of the porous carbon matrix can effectively accommodate the large volume changes during cycling. Correspondingly, the composite microsphere exhibits high discharge capacity of 510 mA h g(-1) after 200 cycles at 0.2 A g(-1) with capacity retention of 88% when calculated from the second cycle. Even at a high current density of 5.0 A g(-1), a high discharge capacity of 417 mA h g(-1) can be achieved. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | WILEY-V C H VERLAG GMBH | - |
dc.subject | REDUCED GRAPHENE OXIDE | - |
dc.subject | HIGH-CAPACITY ANODE | - |
dc.subject | LITHIUM-ION | - |
dc.subject | ELECTROCHEMICAL PERFORMANCE | - |
dc.subject | FESE2 MICROSPHERES | - |
dc.subject | PROMISING ANODE | - |
dc.subject | STORAGE | - |
dc.subject | NANOSHEETS | - |
dc.subject | NANOSPHERE | - |
dc.subject | MOSE2 | - |
dc.title | A Salt-Templated Strategy toward Hollow Iron Selenides-Graphitic Carbon Composite Microspheres with Interconnected Multicavities as High-Performance Anode Materials for Sodium-Ion Batteries | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Kang, Yun Chan | - |
dc.identifier.doi | 10.1002/smll.201803043 | - |
dc.identifier.scopusid | 2-s2.0-85057497431 | - |
dc.identifier.wosid | 000455545800016 | - |
dc.identifier.bibliographicCitation | SMALL, v.15, no.2 | - |
dc.relation.isPartOf | SMALL | - |
dc.citation.title | SMALL | - |
dc.citation.volume | 15 | - |
dc.citation.number | 2 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Chemistry | - |
dc.relation.journalResearchArea | Science & Technology - Other Topics | - |
dc.relation.journalResearchArea | Materials Science | - |
dc.relation.journalResearchArea | Physics | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Multidisciplinary | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical | - |
dc.relation.journalWebOfScienceCategory | Nanoscience & Nanotechnology | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.relation.journalWebOfScienceCategory | Physics, Applied | - |
dc.relation.journalWebOfScienceCategory | Physics, Condensed Matter | - |
dc.subject.keywordPlus | REDUCED GRAPHENE OXIDE | - |
dc.subject.keywordPlus | HIGH-CAPACITY ANODE | - |
dc.subject.keywordPlus | LITHIUM-ION | - |
dc.subject.keywordPlus | ELECTROCHEMICAL PERFORMANCE | - |
dc.subject.keywordPlus | FESE2 MICROSPHERES | - |
dc.subject.keywordPlus | PROMISING ANODE | - |
dc.subject.keywordPlus | STORAGE | - |
dc.subject.keywordPlus | NANOSHEETS | - |
dc.subject.keywordPlus | NANOSPHERE | - |
dc.subject.keywordPlus | MOSE2 | - |
dc.subject.keywordAuthor | hollow structures | - |
dc.subject.keywordAuthor | iron selenide | - |
dc.subject.keywordAuthor | Kirkendall effect | - |
dc.subject.keywordAuthor | sodium-ion batteries | - |
dc.subject.keywordAuthor | spray pyrolysis | - |
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.
(02841) 서울특별시 성북구 안암로 14502-3290-1114
COPYRIGHT © 2021 Korea University. All Rights Reserved.
Certain data included herein are derived from the © Web of Science of Clarivate Analytics. All rights reserved.
You may not copy or re-distribute this material in whole or in part without the prior written consent of Clarivate Analytics.