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DC Field | Value | Language |
---|---|---|
dc.citation.endPage | A346 | - |
dc.citation.number | 4 | - |
dc.citation.startPage | A343 | - |
dc.citation.title | JOURNAL OF THE ELECTROCHEMICAL SOCIETY | - |
dc.citation.volume | 154 | - |
dc.contributor.author | Lee, Hyojin | - |
dc.contributor.author | Kim, Hansu | - |
dc.contributor.author | Doo, Seok-Gwang | - |
dc.contributor.author | Cho, Jaephil | - |
dc.date.accessioned | 2023-12-22T09:38:35Z | - |
dc.date.available | 2023-12-22T09:38:35Z | - |
dc.date.created | 2014-05-21 | - |
dc.date.issued | 2007 | - |
dc.description.abstract | Ge nanoparticles with different particle sizes confined in a carbon matrix were prepared by annealing Ge nanoparticles terminated with butyl groups at 400, 600, and 800°C. X-ray diffraction and transmission electron microscopy results showed that the Ge nanoparticles' size increased from 8 to 100 nm as the annealing temperature of the as-prepared samples increased from 400 to 800°C. Raman spectra confirmed that the parts of the Ge nanoparticles were not covered by the carbon starting at 600°C after annealing for 9 h. Moreover, the graphitization degree of the carbon increases with increasing temperature, and the sample, annealed at 800°C for 3 h, showed the graphitization degree. Electrochemical cycling results revealed that the 10 nm Ge nanoparticles, confined in a carbon matrix obtained after annealing the as-prepared sample at 600°C for 3 h, showed the best charge capacity of 1067 mAhg with 12% capacity loss after 30 cycles. On the other hand, Ge nanoparticles that had not been covered with the carbon matrix showed a rapid capacity decrease, along with pulverization of Ge nanoparticles to a size of about 5-10 nm after cycling. | - |
dc.identifier.bibliographicCitation | JOURNAL OF THE ELECTROCHEMICAL SOCIETY, v.154, no.4, pp.A343 - A346 | - |
dc.identifier.doi | 10.1149/1.2437059 | - |
dc.identifier.issn | 0013-4651 | - |
dc.identifier.scopusid | 2-s2.0-33947156856 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/4686 | - |
dc.identifier.url | http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=33947156856 | - |
dc.identifier.wosid | 000244792200014 | - |
dc.language | 영어 | - |
dc.publisher | ELECTROCHEMICAL SOC INC | - |
dc.title | Synthesis and optimization of nanoparticle Ge confined in a carbon matrix for lithium battery anode material | - |
dc.type | Article | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordPlus | ION BATTERIES | - |
dc.subject.keywordPlus | SILICON | - |
dc.subject.keywordPlus | NANOCRYSTALS | - |
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