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SnO2/WO3 core-shell nanorods and their high reversible capacity as lithium-ion battery anodes.

Authors
  • Xue, Xin-Yu
  • He, Bin
  • Yuan, Shuang
  • Xing, Li-Li
  • Chen, Zhao-Hui
  • Ma, Chun-hua
Type
Published Article
Journal
Nanotechnology
Publisher
IOP Publishing
Publication Date
Sep 30, 2011
Volume
22
Issue
39
Pages
395702–395702
Identifiers
DOI: 10.1088/0957-4484/22/39/395702
PMID: 21891841
Source
Medline
License
Unknown

Abstract

WO(3) nanorods are uniformly coated with SnO(2) nanoparticles via a facile wet-chemical route. The reversible capacity of SnO(2)/WO(3) core-shell nanorods is 845.9 mA h g(-1), higher than that of bare WO(3) nanorods, SnO(2) nanostructures, and traditional theoretical results. Such behavior can be attributed to a novel mechanism by which nanostructured metallic tungsten makes extra Li(2)O (from SnO(2)) reversibly convert to Li(+). This mechanism is confirmed by x-ray diffraction results. Our results open a way for enhancing the reversible capacity of alloy-type metal oxide anode materials.

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