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조재필

Cho, Jaephil
Nano Energy Storage Material Lab.
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dc.citation.endPage 4142 -
dc.citation.number 6 -
dc.citation.startPage 4135 -
dc.citation.title NANO LETTERS -
dc.citation.volume 15 -
dc.contributor.author Kim, Hyungki -
dc.contributor.author Son, Yoonkook -
dc.contributor.author Park, Chibeom -
dc.contributor.author Lee, Min-Joon -
dc.contributor.author Hong, Misun -
dc.contributor.author Kim, Jungah -
dc.contributor.author Lee, Minkyung -
dc.contributor.author Cho, Jaephil -
dc.contributor.author Choi, Hee Cheul -
dc.date.accessioned 2023-12-22T01:10:11Z -
dc.date.available 2023-12-22T01:10:11Z -
dc.date.created 2015-09-22 -
dc.date.issued 2015-06 -
dc.description.abstract We developed the novel electrode that enables fine control of overpotential by exploiting surface segregation that is the enrichment of one component at the surface of binary alloy. To realize this approach, we controlled the proportion of Si with low Li diffusivity at the surface by annealing the SiGe nanowire in H-2 environment at various temperatures. The resulting SiGe nanowires annealed at 850 degrees C exhibited high reversible capacity (>1031 mA.h.g(-1)), and long cycle life (400 cycles) with high opacity retention (89.0%) at 0.2 C. This superior battery performance is attributed to the remaining unlithiated part acting as support frame to prevent pulverization of anode material, which results from the fine-tuning of overpotential by controlling the degree of Si segregation. -
dc.identifier.bibliographicCitation NANO LETTERS, v.15, no.6, pp.4135 - 4142 -
dc.identifier.doi 10.1021/acs.nanolett.5b01257 -
dc.identifier.issn 1530-6984 -
dc.identifier.scopusid 2-s2.0-84935832059 -
dc.identifier.uri https://scholarworks.unist.ac.kr/handle/201301/17059 -
dc.identifier.url http://pubs.acs.org/doi/abs/10.1021/acs.nanolett.5b01257 -
dc.identifier.wosid 000356316900072 -
dc.language 영어 -
dc.publisher AMER CHEMICAL SOC -
dc.title Germanium Silicon Alloy Anode Material Capable of Tunable Overpotential by Nanoscale Si Segregation -
dc.type Article -
dc.description.isOpenAccess FALSE -
dc.relation.journalWebOfScienceCategory Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter -
dc.relation.journalResearchArea Chemistry; Science & Technology - Other Topics; Materials Science; Physics -
dc.description.journalRegisteredClass scie -
dc.description.journalRegisteredClass scopus -
dc.subject.keywordAuthor Surface segregation -
dc.subject.keywordAuthor overpotential -
dc.subject.keywordAuthor lithium ion battery anode -
dc.subject.keywordAuthor GeSi nanowire -
dc.subject.keywordAuthor cycling stability -
dc.subject.keywordPlus LITHIUM-ION BATTERIES -
dc.subject.keywordPlus DEPENDENT FRACTURE -
dc.subject.keywordPlus PERFORMANCE -
dc.subject.keywordPlus GE -
dc.subject.keywordPlus NANOPARTICLES -
dc.subject.keywordPlus NANOWIRES -
dc.subject.keywordPlus CAPACITY -
dc.subject.keywordPlus DESIGN -

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