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DC Field | Value | Language |
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dc.citation.endPage | 2438 | - |
dc.citation.number | 13 | - |
dc.citation.startPage | 2430 | - |
dc.citation.title | ADVANCED FUNCTIONAL MATERIALS | - |
dc.citation.volume | 21 | - |
dc.contributor.author | Kang, Eunae | - |
dc.contributor.author | Jung, Yoon Seok | - |
dc.contributor.author | Cavanagh, Andrew S. | - |
dc.contributor.author | Kim, Gi-Heon | - |
dc.contributor.author | George, Steven M. | - |
dc.contributor.author | Dillon, Anne C. | - |
dc.contributor.author | Kim, Jin Kon | - |
dc.contributor.author | Lee, Jinwoo | - |
dc.date.accessioned | 2023-12-22T06:07:47Z | - |
dc.date.available | 2023-12-22T06:07:47Z | - |
dc.date.created | 2015-01-08 | - |
dc.date.issued | 2011-07 | - |
dc.description.abstract | Fe3O4 nanocrystals confined in mesocellular carbon foam (MSU-F-C) are synthesized by a "host-guest " approach and tested as an anode material for lithium-ion batteries (LIBs). Briefly, an iron oxide precursor, Fe(NO3)(3)center dot 9H(2)O, is impregnated in MSU-F-C having uniform cellular pores similar to 30 nm in diameter, followed by heat-treatment at 400 degrees C for 4 h under Ar. Magnetite Fe3O4 nanocrystals with sizes between 13-27 nm are then successfully fabricated inside the pores of the MSU-F-C, as confirmed by transmission electron microscopy (TEM), dark-field scanning transmission electron microscopy (STEM), energy dispersive X-ray spectroscopy (EDS), X-ray diffraction (XRD), and nitrogen sorption isotherms. The presence of the carbon most likely allows for reduction of some of the Fe3+ ions to Fe2+ ions via a carbothermoreduction process. A Fe3O4/MSU-F-C nanocomposite with 45 wt% Fe3O4 exhibited a first charge capacity of 1007 mA h g(-1) (Li+ extraction) at 0.1 Ag-1 (similar to 0.1 C rate) with 111% capacity retention at the 150(th) cycle, and retained 37% capacity at 7 Ag-1 (similar to 7 C rate). Because the three dimensionally interconnected open pores are larger than the average nanosized Fe3O4 particles, the large volume expansion of Fe3O4 upon Li-insertion is easily accommodated inside the pores, resulting in excellent electrochemical performance as a LIB anode. Furthermore, when an ultrathin Al2O3 layer (< 4 angstrom) was deposited on the composite anode using atomic layer deposition (ALD), the durability, rate capability and undesirable side reactions are significantly improved. | - |
dc.identifier.bibliographicCitation | ADVANCED FUNCTIONAL MATERIALS, v.21, no.13, pp.2430 - 2438 | - |
dc.identifier.doi | 10.1002/adfm.201002576 | - |
dc.identifier.issn | 1616-301X | - |
dc.identifier.scopusid | 2-s2.0-79959990745 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/10009 | - |
dc.identifier.url | http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=79959990745 | - |
dc.identifier.wosid | 000292707700004 | - |
dc.language | 영어 | - |
dc.publisher | WILEY-V C H VERLAG GMBH | - |
dc.title | Fe3O4 Nanoparticles Confined in Mesocellular Carbon Foam for High Performance Anode Materials for Lithium-Ion Batteries | - |
dc.type | Article | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
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