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DC Field | Value | Language |
---|---|---|
dc.citation.endPage | A466 | - |
dc.citation.number | 5 | - |
dc.citation.startPage | A462 | - |
dc.citation.title | JOURNAL OF THE ELECTROCHEMICAL SOCIETY | - |
dc.citation.volume | 154 | - |
dc.contributor.author | Kim, Hyunjung | - |
dc.contributor.author | Cho, Jaephil | - |
dc.date.accessioned | 2023-12-22T09:38:36Z | - |
dc.date.available | 2023-12-22T09:38:36Z | - |
dc.date.created | 2014-05-21 | - |
dc.date.issued | 2007 | - |
dc.description.abstract | Uniformly distributed carbon-coated Sn92 Co8 nanoalloys with a particle size of 50 and 10 nm were prepared using a butyllithium and naphthalide solution at 500 and 700°C, respectively. The samples annealed at 500°C were covered with an amorphous carbon layer with a thickness of about 40 nm, but its thickness was shrunk to 8 nm when annealed at 700°C. The first charge capacity increased with increasing annealing temperature and exhibited 380 and 662 mAhg at 600 and 700°C, respectively. This is due to enhanced ordering of the carbon layer structure and full decomposition of the butyl ligands that limited Li-ion intercalation/deintercalation. The capacity retention of the nanoalloys annealed at 500 and 700°C was 76 and 54% after 30 cycles at a rate of 0.3 C (=210 mAg), while that of bulk Sn92 Co8 alloy was 15%. Much improved capacity retention of the carbon-coated nanoalloys is associated with the thicker carbon layer on the particle surface that acts as a more effective buffer layer for volume expansion during lithium alloying/dealloying than that of the bulk alloy. | - |
dc.identifier.bibliographicCitation | JOURNAL OF THE ELECTROCHEMICAL SOCIETY, v.154, no.5, pp.A462 - A466 | - |
dc.identifier.doi | 10.1149/1.2714305 | - |
dc.identifier.issn | 0013-4651 | - |
dc.identifier.scopusid | 2-s2.0-34047118019 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/4685 | - |
dc.identifier.url | http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=34047118019 | - |
dc.identifier.wosid | 000245371700013 | - |
dc.language | 영어 | - |
dc.publisher | ELECTROCHEMICAL SOC INC | - |
dc.title | Synthesis and morphological, electrochemical characterization of Sn92Co8 nanoalloys for anode materials in Li secondary batteries | - |
dc.type | Article | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordPlus | LITHIUM-ION BATTERIES | - |
dc.subject.keywordPlus | NEGATIVE ELECTRODE MATERIALS | - |
dc.subject.keywordPlus | AMORPHOUS-CARBON | - |
dc.subject.keywordPlus | TIN | - |
dc.subject.keywordPlus | NANOPARTICLES | - |
dc.subject.keywordPlus | COMPOSITES | - |
dc.subject.keywordPlus | SILICON | - |
dc.subject.keywordPlus | STORAGE | - |
dc.subject.keywordPlus | LITHIATION | - |
dc.subject.keywordPlus | NANORODS | - |
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