Please use this identifier to cite or link to this item: https://doi.org/10.1039/c3nr00085k
DC FieldValue
dc.titleConformal graphene encapsulation of tin oxide nanoparticle aggregates for improved performance in reversible Li+ storage
dc.contributor.authorJi, G.
dc.contributor.authorDing, B.
dc.contributor.authorSha, Z.
dc.contributor.authorWu, J.
dc.contributor.authorMa, Y.
dc.contributor.authorLee, J.Y.
dc.date.accessioned2014-10-09T06:45:07Z
dc.date.available2014-10-09T06:45:07Z
dc.date.issued2013-07-05
dc.identifier.citationJi, G., Ding, B., Sha, Z., Wu, J., Ma, Y., Lee, J.Y. (2013-07-05). Conformal graphene encapsulation of tin oxide nanoparticle aggregates for improved performance in reversible Li+ storage. Nanoscale 5 (13) : 5965-5972. ScholarBank@NUS Repository. https://doi.org/10.1039/c3nr00085k
dc.identifier.issn20403364
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/88683
dc.description.abstractThe performance of SnO2 nanoparticle (NP) aggregates for reversible storage of Li+ was improved after conformal encapsulation of individual aggregates with graphene (i.e., encapsulation without changing the underlying morphology of SnO2 aggregates). Conformal encapsulation was carried out by modifying the surface of SnO2 NP aggregates with amine terminating groups to increase their binding affinity to graphene. The thickness of the graphene encapsulation could then be varied by the amount of graphene oxide (GO) solution used in the preparation. Electron microscopy confirmed the successful coating of graphene as a thin layer on the NP aggregate surface. This unique construction method resulted in SnO2-graphene composites with a satisfying cycling performance. In particular a composite with only 5 wt% graphene could deliver, without the use of any carbon conductive additive, a charge (Li+ extraction) capacity of 700 mA h g -1 at the regular current density of 0.1 A g-1 and 423 mA h g-1 after a tenfold increase of the current density to 1 A g -1 in the 0.005-2 V voltage window. There was evidence to suggest that the composite performance was determined by Li+ diffusion across the basal plane of the graphene layers. © 2013 The Royal Society of Chemistry.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1039/c3nr00085k
dc.sourceScopus
dc.typeArticle
dc.contributor.departmentCHEMICAL & BIOMOLECULAR ENGINEERING
dc.contributor.departmentCHEMISTRY
dc.description.doi10.1039/c3nr00085k
dc.description.sourcetitleNanoscale
dc.description.volume5
dc.description.issue13
dc.description.page5965-5972
dc.identifier.isiut000320398300038
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