Fe3O4-decorated hollow graphene balls prepared by spray pyrolysis process for ultrafast and long cycle-life lithium ion batteries
DC Field | Value | Language |
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dc.contributor.author | Choi, Seung Ho | - |
dc.contributor.author | Kang, Yun Chan | - |
dc.date.accessioned | 2021-09-05T03:15:22Z | - |
dc.date.available | 2021-09-05T03:15:22Z | - |
dc.date.created | 2021-06-15 | - |
dc.date.issued | 2014-11 | - |
dc.identifier.issn | 0008-6223 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/96825 | - |
dc.description.abstract | Fe3O4-decorated graphene balls were prepared by a spray pyrolysis process. Analysis by Raman spectroscopy and X-ray photoelectron spectroscopy indicated that the spray pyrolysis at 800 degrees C resulted in the complete reduction of graphene oxide sheets containing oxygen functional groups into graphene sheets, leading to the formation of Fe3O4-decorated graphene balls. The graphene content in the composite ball was 27 wt%. The Brunauer-Emmett-Teller surface area of the Fe3O4-decorated graphene balls was as high as 130 m(2) g(-1). The initial discharge and charge capacities of the Fe3O4-decorated graphene balls at a high current density of 7 A g(-1) were 1210 and 843 mAh g(-1), respectively, and the discharge capacity was as high as 690 mAh g(-1) even after 1000 cycles. The stable reversible discharge capacities of the Fe3O4-decorated graphene balls decreased from 1040 to 540 mAh g(-1) with the increase in current density from 1 to 30 A g(-2). The Fe3O4-decorated graphene balls with a uniform distribution of ultrafine Fe3O4 nanocrystals below 15 nm showed superior electrochemical properties as anode materials for lithium ion batteries. The overall structure of the Fe3O4-decorated graphene balls was maintained even after long-term cycling. (C) 2014 Elsevier Ltd. All rights reserved. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | PERGAMON-ELSEVIER SCIENCE LTD | - |
dc.subject | ENCAPSULATED SI NANOPARTICLES | - |
dc.subject | HIGH-PERFORMANCE ANODE | - |
dc.subject | ONE-POT SYNTHESIS | - |
dc.subject | REVERSIBLE CAPACITY | - |
dc.subject | ELECTRODE MATERIALS | - |
dc.subject | FE3O4 NANOSPHERES | - |
dc.subject | OXIDE | - |
dc.subject | COMPOSITE | - |
dc.subject | NANOCOMPOSITE | - |
dc.subject | STORAGE | - |
dc.title | Fe3O4-decorated hollow graphene balls prepared by spray pyrolysis process for ultrafast and long cycle-life lithium ion batteries | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Kang, Yun Chan | - |
dc.identifier.doi | 10.1016/j.carbon.2014.07.042 | - |
dc.identifier.scopusid | 2-s2.0-84920595950 | - |
dc.identifier.wosid | 000342657100006 | - |
dc.identifier.bibliographicCitation | CARBON, v.79, pp.58 - 66 | - |
dc.relation.isPartOf | CARBON | - |
dc.citation.title | CARBON | - |
dc.citation.volume | 79 | - |
dc.citation.startPage | 58 | - |
dc.citation.endPage | 66 | - |
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.journalWebOfScienceCategory | Chemistry, Physical | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.subject.keywordPlus | ENCAPSULATED SI NANOPARTICLES | - |
dc.subject.keywordPlus | HIGH-PERFORMANCE ANODE | - |
dc.subject.keywordPlus | ONE-POT SYNTHESIS | - |
dc.subject.keywordPlus | REVERSIBLE CAPACITY | - |
dc.subject.keywordPlus | ELECTRODE MATERIALS | - |
dc.subject.keywordPlus | FE3O4 NANOSPHERES | - |
dc.subject.keywordPlus | OXIDE | - |
dc.subject.keywordPlus | COMPOSITE | - |
dc.subject.keywordPlus | NANOCOMPOSITE | - |
dc.subject.keywordPlus | STORAGE | - |
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