Designed synthesis of coaxial SnO2@carbon hollow nanospheres for highly reversible lithium storage

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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Detail(s)

Original languageEnglish
Pages (from-to)2536-2539
Journal / PublicationAdvanced Materials
Volume21
Issue number24
Publication statusPublished - 26 Jun 2009
Externally publishedYes

Abstract

A new type of functional nanoarchitecture, coaxial SnO2@carbon hollow nanospheres, was designed for highly reversible lithium storage. This structure incorporates simultaneously two desirable design rationales for high energy anode materials based on Li-metal alloying, hollow interior space, and carbon nanopainting. Coating of SnO double shells on silica nanospheres was achieved, and the glucose-derived carbon material was coated on SiO 2@SnO2 by a simple hydrothermal process. 0.3 g of as-prepared core/shell SiO2@SnO2 nanospheres was dispersed by ultrasonication in an aqueous glucose solution. The suspension was transferred to a 40 mLTeflon-lined autoclave, which was then heated in an air flow electric oven at 180°C for 3 h. The electrochemical measurements were carried out with lithium metal as the counter and reference electrodes at room temperature. These coaxial carbon hollow spheres indeed exhibit exceptional cycle life for at least several hundred cycles and rate capability.

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Citation Format(s)

Designed synthesis of coaxial SnO2@carbon hollow nanospheres for highly reversible lithium storage. / Lou, Xiong Wen; Li, Chang Ming; Archer, Lynden A.
In: Advanced Materials, Vol. 21, No. 24, 26.06.2009, p. 2536-2539.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review