Full metadata record
DC Field | Value | Language |
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dc.contributor.author | 황성주 | - |
dc.date.accessioned | 2016-08-28T10:08:55Z | - |
dc.date.available | 2016-08-28T10:08:55Z | - |
dc.date.issued | 2012 | - |
dc.identifier.issn | 0947-6539 | - |
dc.identifier.other | OAK-9322 | - |
dc.identifier.uri | https://dspace.ewha.ac.kr/handle/2015.oak/223101 | - |
dc.description.abstract | Graphene nanosheets are successfully applied as an effective platform for the 2D ordering of metal oxide nanoparticles. Mesoporous 2D aggregates of anatase TiO 2 nanoparticles are synthesized by the heat treatment of the uniformly hybridized nanocomposite of layered titanate-reduced graphene oxide (RGO) at elevated temperatures. The precursor layered titanate-RGO nanocomposite is prepared by self-assembly of anionic RGO nanosheets and cationic TiO 2 nanosols. The calcination of the as-prepared layered titanate-RGO nanocomposite at 500 °C induces a structural and morphological change of layered titanate nanoplates into anatase TiO 2 nanoparticles without significant modification of the RGO nanosheet. Increasing the heating temperature to 600 °C gives rise to elimination of the RGO component, leading to the formation of sheetlike porous aggregates of RGO-free TiO 2 nanoparticles. The nanocomposites calcined at 500-700 °C display promising functionality as negative electrodes for lithium ion batteries. Among the present calcined derivatives, the 2D sheet-shaped aggregate of TiO 2 nanoparticles obtained from calcination at 600 °C delivers the greatest specific discharge capacity with good capacity retention for all current density conditions applied. Such superior electrode performance of the nanocomposite calcined at 600 °C is attributable both to the improved stability of the crystal structure and crystal morphology of titania and to the enhancement of Li + ion transport through the enlargement of mesopores. The present findings clearly demonstrate the usefulness of RGO nanosheets as a platform for 2D-ordered superstructures of metal oxide nanoparticles with improved electrode performance. Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. | - |
dc.language | English | - |
dc.title | Graphene nanosheets as a platform for the 2D ordering of metal oxide nanoparticles: Mesoporous 2D aggregate of anatase TiO 2 nanoparticles with improved electrode performance | - |
dc.type | Article | - |
dc.relation.issue | 43 | - |
dc.relation.volume | 18 | - |
dc.relation.index | SCIE | - |
dc.relation.index | SCOPUS | - |
dc.relation.startpage | 13800 | - |
dc.relation.lastpage | 13809 | - |
dc.relation.journaltitle | Chemistry - A European Journal | - |
dc.identifier.doi | 10.1002/chem.201200551 | - |
dc.identifier.wosid | WOS:000310066700030 | - |
dc.identifier.scopusid | 2-s2.0-84867493155 | - |
dc.author.google | Lee J.M. | - |
dc.author.google | Kim I.Y. | - |
dc.author.google | Han S.Y. | - |
dc.author.google | Kim T.W. | - |
dc.author.google | Hwang S.-J. | - |
dc.contributor.scopusid | 황성주(7404626171) | - |
dc.date.modifydate | 20190901081003 | - |