Synthesis Process of CoSeO3 Microspheres for Unordinary Li-ion Storage Performances and Mechanism of Their Conversion Reaction with Li ions
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Park, Gi Dae | - |
dc.contributor.author | Hong, Jeong Hoo | - |
dc.contributor.author | Choi, Jae Hun | - |
dc.contributor.author | Lee, Jong-Heun | - |
dc.contributor.author | Kim, Yang Soo | - |
dc.contributor.author | Kang, Yun Chan | - |
dc.date.accessioned | 2021-09-01T14:37:36Z | - |
dc.date.available | 2021-09-01T14:37:36Z | - |
dc.date.created | 2021-06-19 | - |
dc.date.issued | 2019-06 | - |
dc.identifier.issn | 1613-6810 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/65275 | - |
dc.description.abstract | Multicomponent materials with various double cations have been studied as anode materials of lithium-ion batteries (LIBs). Heterostructures formed by coupling different-bandgap nanocrystals enhance the surface reaction kinetics and facilitate charge transport because of the internal electric field at the heterointerface. Accordingly, metal selenites can be considered efficient anode materials of LIBs because they transform into metal selenide and oxide nanocrystals in the first cycle. However, few studies have reported synthesis of uniquely structured metal selenite microspheres. Herein, synthesis of high-porosity CoSeO3 microspheres is reported. Through one-pot oxidation at 400 degrees C, CoSex-C microspheres formed by spray pyrolysis transform into CoSeO3 microspheres showing unordinary cycling and rate performances. The conversion mechanism of CoSeO3 microspheres for lithium-ion storage is systematically studied by cyclic voltammetry, in situ X-ray diffraction and electrochemical impedance spectroscopy, and transmission electron microscopy. The reversible reaction mechanism of the CoSeO3 phase from the second cycle onward is evaluated as CoO + xSeO(2) + (1 - x)Se + 4(x + 1)Li++ 4( x + 1)e(-) <-> Co + (2x + 1)Li2O + Li2Se. The CoSeO3 microspheres show a high reversible capacity of 709 mA h g(-1) for the 1400th cycle at a current density of 3 A g(-1) and a high reversible capacity of 526 mA h g(-1) even at an extremely high current density of 30 A g(-1). | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | WILEY-V C H VERLAG GMBH | - |
dc.subject | CARBON-FIBER PAPER | - |
dc.subject | ANODE MATERIAL | - |
dc.subject | NANOCRYSTALLINE CO0.85SE | - |
dc.subject | STABLE ELECTROCATALYST | - |
dc.subject | SELENIDE NANOCRYSTALS | - |
dc.subject | HIGHLY EFFICIENT | - |
dc.subject | SPRAY-PYROLYSIS | - |
dc.subject | LITHIUM | - |
dc.subject | BATTERIES | - |
dc.subject | FABRICATION | - |
dc.title | Synthesis Process of CoSeO3 Microspheres for Unordinary Li-ion Storage Performances and Mechanism of Their Conversion Reaction with Li ions | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Lee, Jong-Heun | - |
dc.contributor.affiliatedAuthor | Kang, Yun Chan | - |
dc.identifier.doi | 10.1002/smll.201901320 | - |
dc.identifier.scopusid | 2-s2.0-85065325876 | - |
dc.identifier.wosid | 000471711300004 | - |
dc.identifier.bibliographicCitation | SMALL, v.15, no.24 | - |
dc.relation.isPartOf | SMALL | - |
dc.citation.title | SMALL | - |
dc.citation.volume | 15 | - |
dc.citation.number | 24 | - |
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 | CARBON-FIBER PAPER | - |
dc.subject.keywordPlus | ANODE MATERIAL | - |
dc.subject.keywordPlus | NANOCRYSTALLINE CO0.85SE | - |
dc.subject.keywordPlus | STABLE ELECTROCATALYST | - |
dc.subject.keywordPlus | SELENIDE NANOCRYSTALS | - |
dc.subject.keywordPlus | HIGHLY EFFICIENT | - |
dc.subject.keywordPlus | SPRAY-PYROLYSIS | - |
dc.subject.keywordPlus | LITHIUM | - |
dc.subject.keywordPlus | BATTERIES | - |
dc.subject.keywordPlus | FABRICATION | - |
dc.subject.keywordAuthor | anode materials | - |
dc.subject.keywordAuthor | conversion reaction | - |
dc.subject.keywordAuthor | Li-ion batteries | - |
dc.subject.keywordAuthor | metal selenite | - |
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.