Journal
JOURNAL OF MATERIALS CHEMISTRY
Volume 21, Issue 16, Pages 6006-6013Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c0jm04275g
Keywords
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Funding
- National Science Foundation of China [50662006]
- Chinese Ministry of Education [210206]
- Alexander Humboldt Society
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This paper describes a method to prepare tungsten doped anatase TiO2 (WTO) nanoparticles with high surface area based on a polymer-assisted sol-gel process and using simple chemical reagents. The samples are characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (including high-resolution imaging-HRTEM), X-ray photoelectron spectroscopy (XPS), and Brunauer-Emmett-Teller (BET). WTO nanoparticles are obtained with small particle size (ca. 9 nm in mean grain size) and good crystallinity. The as-prepared samples are used as an electrode material for a lithium-ion battery, whose charge-discharge properties, cyclic voltammetry, and cycle performance are examined and revealed to have very good properties. A highly stable capacity of 170 mA h g(-1) is found after 100 cycles.
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