Microwave-assisted hydrothermal synthesis of porous SnO 2 nanotubes and their lithium ion storage properties

H. E. Wang, L. J. Xi, R. G. Ma, Z. G. Lu, C. Y. Chung, I. Bello, J. A. Zapien

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

49 Citations (Scopus)

Abstract

Porous SnO 2 nanotubes have been synthesized by a rapid microwave-assisted hydrothermal process followed by annealing in air. The detailed morphological and structural studies indicate that the SnO 2 tubes typically have diameters from 200 to 400 nm, lengths from 0.5 to 1.5 μm and wall thicknesses from 50 to 100 nm. The SnO 2 nanotubes are self-assembled by interconnected nanocrystals with sizes ∼8 nm resulting in a specific surface area of ∼54 m 2 g -1. The pristine SnO 2 nanotubes are used to fabricate lithium half cells to evaluate their lithium ion storage properties. The porous SnO 2 nanotubes are characteristic with high lithium ion storage capacity, that is found to be 1258, 951, 757, 603, 458, and 288 mAh g -1, at 0.1, 0.2, 0.5, 1, 2, and 4C, respectively. The enhanced electrochemical properties of the SnO 2 nanotubes can be ascribed to their unique geometry and porous structures. © 2012 Elsevier Inc.
Original languageEnglish
Pages (from-to)104-110
JournalJournal of Solid State Chemistry
Volume190
DOIs
Publication statusPublished - Jun 2012

Research Keywords

  • Anode
  • Lithium-ion battery
  • Mesoporous material
  • Nanotube
  • Tin dioxide

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