Exploration of cobalt selenite-carbon composite porous nanofibers as anode for sodium-ion batteries and unveiling their conversion reaction mechanism
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Park, Jin-Sung | - |
dc.contributor.author | Park, Gi Dae | - |
dc.contributor.author | Kang, Yun Chan | - |
dc.date.accessioned | 2022-02-16T14:42:06Z | - |
dc.date.available | 2022-02-16T14:42:06Z | - |
dc.date.created | 2022-02-08 | - |
dc.date.issued | 2021-10-30 | - |
dc.identifier.issn | 1005-0302 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/135992 | - |
dc.description.abstract | Efforts have been made to develop a promising anode material with a novel composition for sodium ion batteries (SIBs). In this study, the sodium-ion storage mechanism of transition metal selenite that comprises transition metal cation coupled with two anions is studied. Amorphous cobalt selenite (CoSeO3)-carbon composite nanofibers containing numerous pores are synthesized via electrospinning process. Upon heat treatment of the electrospun nanofibers containing selenium, CoSe2 nanoclusters are formed. During the subsequent oxidation, CoSe2 transformed into amorphous CoSeO3 and some part of carbon was oxidized into CO2, leaving the pores inside the nanofiber. To unveil the electrochemical reaction mechanism, analytical methods including cyclic voltammetry, ex-situ X-ray photoelectron spectroscopy, ex-situ transmission electron microscopy, and in-situ electrochemical impedance spectroscopy techniques were adopted. Based on the analyses, the following conversion reaction from the second cycle onward is suggested: CoO + xSeO(2) + (1 x)Se + 4(x + 1)Na+ + 4(x + 1)e(-) <-> Co + (2x + 1)Na2O + Na2Se. Furthermore, the electrochemical properties of porous CoSeO3-carbon composite nanofibers are analyzed in detail. The anode material exhibited stable cycle stability up to 200 cycles at 0.5 A g(-1) and high rate performance up to 5 A g(-1). (C) 2021 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | JOURNAL MATER SCI TECHNOL | - |
dc.subject | ELECTRODE MATERIALS | - |
dc.subject | GRAPHENE OXIDE | - |
dc.subject | ELECTROCHEMICAL PERFORMANCE | - |
dc.subject | HIGH-CAPACITY | - |
dc.subject | K-ION | - |
dc.subject | LITHIUM | - |
dc.subject | STORAGE | - |
dc.subject | ENERGY | - |
dc.subject | NANOSPHERES | - |
dc.subject | NANOSTRUCTURES | - |
dc.title | Exploration of cobalt selenite-carbon composite porous nanofibers as anode for sodium-ion batteries and unveiling their conversion reaction mechanism | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Kang, Yun Chan | - |
dc.identifier.doi | 10.1016/j.jmst.2021.01.076 | - |
dc.identifier.scopusid | 2-s2.0-85104959379 | - |
dc.identifier.wosid | 000696986000003 | - |
dc.identifier.bibliographicCitation | JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY, v.89, pp.24 - 35 | - |
dc.relation.isPartOf | JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY | - |
dc.citation.title | JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY | - |
dc.citation.volume | 89 | - |
dc.citation.startPage | 24 | - |
dc.citation.endPage | 35 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Materials Science | - |
dc.relation.journalResearchArea | Metallurgy & Metallurgical Engineering | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.relation.journalWebOfScienceCategory | Metallurgy & Metallurgical Engineering | - |
dc.subject.keywordPlus | ELECTROCHEMICAL PERFORMANCE | - |
dc.subject.keywordPlus | ELECTRODE MATERIALS | - |
dc.subject.keywordPlus | ENERGY | - |
dc.subject.keywordPlus | GRAPHENE OXIDE | - |
dc.subject.keywordPlus | HIGH-CAPACITY | - |
dc.subject.keywordPlus | K-ION | - |
dc.subject.keywordPlus | LITHIUM | - |
dc.subject.keywordPlus | NANOSPHERES | - |
dc.subject.keywordPlus | NANOSTRUCTURES | - |
dc.subject.keywordPlus | STORAGE | - |
dc.subject.keywordAuthor | Anode materials | - |
dc.subject.keywordAuthor | Conversion reaction | - |
dc.subject.keywordAuthor | Electrospinning | - |
dc.subject.keywordAuthor | Metal selenite | - |
dc.subject.keywordAuthor | Sodium-ion batteries | - |
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.