Extremely High Yield Conversion from Low-Cost Sand to High-Capacity Si Electrodes for Li-Ion Batteries

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dc.contributor.authorYoo, Jung-Keunko
dc.contributor.authorKim, Jongsoonko
dc.contributor.authorChoi, Min-Jaeko
dc.contributor.authorPark, Young-Ukko
dc.contributor.authorHong, Jihyunko
dc.contributor.authorBaek, Kwang Minko
dc.contributor.authorKang, Kisukko
dc.contributor.authorJung, Yeon Sikko
dc.date.accessioned2015-01-29T07:25:20Z-
dc.date.available2015-01-29T07:25:20Z-
dc.date.created2014-12-16-
dc.date.created2014-12-16-
dc.date.issued2014-11-
dc.identifier.citationADVANCED ENERGY MATERIALS, v.4, no.16-
dc.identifier.issn1614-6832-
dc.identifier.urihttp://hdl.handle.net/10203/193896-
dc.description.abstractAlthough magnesiothermic reduction has attracted immense attention as a facile route for the fabrication of mass-scale Si nanostructures for high-capacity lithium-ion battery applications, its low conversion yield (<50%) and the discovery of a sustainable and low-cost precursor remain challenging. Here, an unprecedentedly high final conversion yield (>98%) of magnesiothermic reduction based on control of reaction pressure is reported. The successful use of sand as a nearly infinite and extremely low-cost source for the high-yield fabrication of nanostructured Si electrodes for Li-ion batteries is demonstrated. On the basis of a step-by-step analysis of the material's structural, morphological, and compositional changes, a two-step conversion reaction mechanism is proposed that can clearly explain the phase behavior and the high conversion yield. The excellent charge-discharge performance (specific capacities over 1500 mAh g(-1) for 100 cycles) of the hierarchical Si nanostructure suggests that this facile, fast, and high-efficiency synthesis strategy from ultralow-cost sand particles provides outstanding cost-effectiveness and possible scalability for the commercialization of Si electrodes for energy-storage applications.-
dc.languageEnglish-
dc.publisherWILEY-V C H VERLAG GMBH-
dc.subjectSILICON NANOWIRES-
dc.subjectCOMPOSITE ANODES-
dc.subjectPOROUS SILICON-
dc.subjectPERFORMANCE-
dc.subjectNANOSCALE-
dc.subjectREDUCTION-
dc.subjectMAGNESIUM-
dc.subjectSTORAGE-
dc.subjectCELLS-
dc.titleExtremely High Yield Conversion from Low-Cost Sand to High-Capacity Si Electrodes for Li-Ion Batteries-
dc.typeArticle-
dc.identifier.wosid000345314800008-
dc.identifier.scopusid2-s2.0-84911396338-
dc.type.rimsART-
dc.citation.volume4-
dc.citation.issue16-
dc.citation.publicationnameADVANCED ENERGY MATERIALS-
dc.identifier.doi10.1002/aenm.201400622-
dc.contributor.localauthorKang, Kisuk-
dc.contributor.localauthorJung, Yeon Sik-
dc.contributor.nonIdAuthorKim, Jongsoon-
dc.contributor.nonIdAuthorPark, Young-Uk-
dc.contributor.nonIdAuthorHong, Jihyun-
dc.type.journalArticleArticle-
dc.subject.keywordPlusSILICON NANOWIRES-
dc.subject.keywordPlusCOMPOSITE ANODES-
dc.subject.keywordPlusPOROUS SILICON-
dc.subject.keywordPlusPERFORMANCE-
dc.subject.keywordPlusNANOSCALE-
dc.subject.keywordPlusREDUCTION-
dc.subject.keywordPlusMAGNESIUM-
dc.subject.keywordPlusSTORAGE-
dc.subject.keywordPlusCELLS-
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