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DC Field | Value | Language |
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dc.citation.endPage | 466 | - |
dc.citation.number | 2 | - |
dc.citation.startPage | 461 | - |
dc.citation.title | ELECTROCHIMICA ACTA | - |
dc.citation.volume | 54 | - |
dc.contributor.author | Cho, Jaephil | - |
dc.date.accessioned | 2023-12-22T08:15:01Z | - |
dc.date.available | 2023-12-22T08:15:01Z | - |
dc.date.created | 2014-05-19 | - |
dc.date.issued | 2008-12 | - |
dc.description.abstract | This paper describes the synthesis and electrochemical characterization of Sn70Ge30@carbon core-shell nanoparticles prepared by vacuum annealing of the alkyl-capped Sn70Ge30 nanoparticles obtained from the reaction of SnCl4 and GeCl4 with sodium naphthalide in ethylene glycol dimethyl ether (glyme) and RLi (R = butyl, ethyl, methyl). The Sn70Ge30@carbon core-shell nanoparticles have different core sizes and shell thicknesses depending on the alkyl terminator. The annealed nanoparticles that terminate with butyl and ethyl groups have core sizes of ∼14 and ∼17 nm with carbon shell thicknesses of ∼16 and ∼8 nm, respectively. On the other hand, annealed nanoparticles that terminate with methyl groups have core sizes of 40 nm with a very thin carbon shell without uniform coverage of the core. Electrochemical characterization shows that nanoparticles prepared using butyl terminators have the highest capacity retention out to 40 cycles (95%) and a first charge capacity of 1040 mAh/g. On the other hand, ethyl- and methyl-capped nanoparticles show 82 and 64% capacity retention after 40 cycles. | - |
dc.identifier.bibliographicCitation | ELECTROCHIMICA ACTA, v.54, no.2, pp.461 - 466 | - |
dc.identifier.doi | 10.1016/j.electacta.2008.07.060 | - |
dc.identifier.issn | 0013-4686 | - |
dc.identifier.scopusid | 2-s2.0-53649095759 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/4621 | - |
dc.identifier.url | http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=53649095759 | - |
dc.identifier.wosid | 000263282400047 | - |
dc.language | 영어 | - |
dc.publisher | PERGAMON-ELSEVIER SCIENCE LTD | - |
dc.title | Control of the carbon shell thickness in Sn70Ge30@carbon core-shell nanoparticles using alkyl terminators: Its implication for high-capacity lithium battery anode materials | - |
dc.type | Article | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordAuthor | Narroalloy | - |
dc.subject.keywordAuthor | Carbon | - |
dc.subject.keywordAuthor | Anode | - |
dc.subject.keywordAuthor | Li-ion | - |
dc.subject.keywordAuthor | Cycle life | - |
dc.subject.keywordPlus | LI-ION BATTERIES | - |
dc.subject.keywordPlus | SECONDARY BATTERIES | - |
dc.subject.keywordPlus | NANOCRYSTALLINE | - |
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