Superior electrochemical properties of SiO2-doped Co3O4 hollow nanospheres obtained through nanoscale Kirkendall diffusion for lithium-ion batteries
DC Field | Value | Language |
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dc.contributor.author | Won, Jong Min | - |
dc.contributor.author | Cho, Jung Sang | - |
dc.contributor.author | Kang, Yun Chan | - |
dc.date.accessioned | 2021-09-03T19:55:08Z | - |
dc.date.available | 2021-09-03T19:55:08Z | - |
dc.date.created | 2021-06-16 | - |
dc.date.issued | 2016-09-25 | - |
dc.identifier.issn | 0925-8388 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/87487 | - |
dc.description.abstract | Hollow SiO2-doped Co3O4 (Si-Co3O4) nanospheres with excellent Li-ion storage properties were synthesized via flame spray pyrolysis by applying a nanoscale Kirkendall diffusion process. A solid SiO2-doped CoO (filled Si-CoO) nanopowder was prepared through this process, and then it was transformed into hollow Si-Co3O4 nanopowder by way of a core-shell-structured Co-SiO2 (filled Co@Si-CoO) composite nanopowder. In addition, the direct oxidation of the filled Si-CoO nanopowder at 300 degrees C under an air atmosphere resulted in the formation of a solid SiO2-doped Co3O4 (filled Si-Co3O4) nanopowder. At a high current density of 2 A g(-1), the hollow Si-Co3O4 nanospheres exhibited a 150th-cycle discharge capacity of 971 mA h g(-1) and capacity retention of 99.5%, which was measured relative to the second cycle. However, the corresponding capacity retentions of the filled Si-CoO and Si-Co3O4 nanopowders were only 82.2% and 71.5%, respectively. The high structural stability during cycling and high Li-ion conductivity, which are caused by the hollow structure, are responsible for the excellent Li-ion storage properties of the hollow Si-Co3O4 nanospheres obtained through nanoscale Kirkendall diffusion. (C) 2016 Elsevier B.V. All rights reserved. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | ELSEVIER SCIENCE SA | - |
dc.subject | FLAME SPRAY-PYROLYSIS | - |
dc.subject | ANODE MATERIALS | - |
dc.subject | REVERSIBLE CAPACITY | - |
dc.subject | PERFORMANCE | - |
dc.subject | COBALT | - |
dc.subject | GRAPHENE | - |
dc.subject | NANOPOWDERS | - |
dc.subject | POWDERS | - |
dc.subject | ELECTRODE | - |
dc.subject | NANOWIRES | - |
dc.title | Superior electrochemical properties of SiO2-doped Co3O4 hollow nanospheres obtained through nanoscale Kirkendall diffusion for lithium-ion batteries | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Kang, Yun Chan | - |
dc.identifier.doi | 10.1016/j.jallcom.2016.04.104 | - |
dc.identifier.scopusid | 2-s2.0-84964515106 | - |
dc.identifier.wosid | 000376109000052 | - |
dc.identifier.bibliographicCitation | JOURNAL OF ALLOYS AND COMPOUNDS, v.680, pp.366 - 372 | - |
dc.relation.isPartOf | JOURNAL OF ALLOYS AND COMPOUNDS | - |
dc.citation.title | JOURNAL OF ALLOYS AND COMPOUNDS | - |
dc.citation.volume | 680 | - |
dc.citation.startPage | 366 | - |
dc.citation.endPage | 372 | - |
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 | Materials Science | - |
dc.relation.journalResearchArea | Metallurgy & Metallurgical Engineering | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.relation.journalWebOfScienceCategory | Metallurgy & Metallurgical Engineering | - |
dc.subject.keywordPlus | FLAME SPRAY-PYROLYSIS | - |
dc.subject.keywordPlus | ANODE MATERIALS | - |
dc.subject.keywordPlus | REVERSIBLE CAPACITY | - |
dc.subject.keywordPlus | PERFORMANCE | - |
dc.subject.keywordPlus | COBALT | - |
dc.subject.keywordPlus | GRAPHENE | - |
dc.subject.keywordPlus | NANOPOWDERS | - |
dc.subject.keywordPlus | POWDERS | - |
dc.subject.keywordPlus | ELECTRODE | - |
dc.subject.keywordPlus | NANOWIRES | - |
dc.subject.keywordAuthor | Kirkendall diffusion | - |
dc.subject.keywordAuthor | Cobalt oxide | - |
dc.subject.keywordAuthor | Anode material | - |
dc.subject.keywordAuthor | Lithium-ion battery | - |
dc.subject.keywordAuthor | Flame spray pyrolysis | - |
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