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One-pot synthesis of carbon-coated SnO2 nanocolloids with improved reversible lithium storage properties.

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One-pot synthesis of carbon-coated SnO2 nanocolloids with improved reversible lithium storage properties.

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dc.contributor.author Lou, David Xiong Wen.
dc.contributor.author Chen, Jun Song.
dc.contributor.author Chen, Peng.
dc.contributor.author Archer, Lynden A.
dc.date.accessioned 2012-07-13T04:22:37Z
dc.date.available 2012-07-13T04:22:37Z
dc.date.copyright 2009
dc.date.issued 2012-07-13
dc.identifier.citation Lou, D. X. W., Chen, J. S., Chen, P., & Archer, L. A. (2009). One-pot synthesis of carbon-coated SnO2 nanocolloids with improved reversible lithium storage properties. Chemistry of materials, 21(13), 2868-2874
dc.identifier.uri http://hdl.handle.net/10220/8330
dc.description.abstract We report a simple glucose-mediated hydrothermal method for gram-scale synthesis of nearly monodisperse hybrid SnO2 nanoparticles. Glucose is found to play the dual role of facilitating rapid precipitation of polycrystalline SnO2 nanocolloids and in creating a uniform, glucose-derived, carbon-rich polysaccharide (GCP) coating on the SnO2 nanocores. The thickness of the GCP coating can be facilely manipulated by varying glucose concentration in the synthesis medium. Carbon-coated SnO2 nanocolloids obtained after carbonization of the GCP coating exhibit significantly enhanced cycling performance for lithium storage. Specifically, we find that a capacity of ca. 440 mA h/g can be obtained after more than 100 charge/discharge cycles at a current density of 300 mA/g in hybrid SnO2-carbon electrodes containing as much as 1/3 of their mass in the low-activity carbon shell. By reducing the SnO2-carbon particles with H2, we demonstrate a simple route to carbon-coated Sn nanospheres. Lithium storage properties of the latter materials are also reported. Our results suggest that large initial irreversible losses in these materials are caused not only by the initial, presumably irreversible, reduction of SnO2 as generally perceived in the field, but also by the formation of the solid electrolyte interface (SEI).
dc.language.iso en
dc.relation.ispartofseries Chemistry of materials
dc.rights © 2009 American Chemical Society.
dc.subject DRNTU::Engineering::Materials.
dc.title One-pot synthesis of carbon-coated SnO2 nanocolloids with improved reversible lithium storage properties.
dc.type Journal Article
dc.contributor.school School of Chemical and Biomedical Engineering
dc.identifier.doi http://dx.doi.org/10.1021/cm900613d

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