Fluorine-doped nanocrystalline SnO{sub 2} powders prepared via a single molecular precursor method as anode materials for Li-ion batteries

Journal Article · Wed Mar 15 00:00:00 EST 2006 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/j.jssc.2005.11.022· OSTI ID:20784912

Ha, Hyung-Wook ^[1]; Kim, Keon ^[1]; Borniol, Mervyn de ^[2]; Toupance, Thierry ^[2]

---

1. Division of Chemistry and Molecular Engineering, Korea University, Seoul 136-701 (Korea, Republic of)
2. Laboratoire de Chimie Organique et Organometallique, UMR 5802 CNRS, University Bordeaux 1, 351 Cours de la Liberation, F-33405 Talence Cedex (France)

Fluorine-doped nanocrystalline tin dioxide materials (F:SnO{sub 2}) have been successfully prepared by the sol-gel process from a single molecular precursor followed by a thermal treatment at 450-650 deg. C. The resulting materials were characterized by FTIR spectroscopy, powder X-ray diffraction, nitrogen adsorption porosimetry (BET) and transmission electron microscopy (TEM). The mean particle size increased from 5 to 20 nm and the specific surface area decreased from 123 to 37 m{sup 2}/g as the temperature of heat treatment was risen from 450 to 650 deg. C. Fluorine-doped nanocrystalline SnO{sub 2} exhibited capacity of 560, 502, and 702 mA h/g with 48%, 50%, and 40% capacity retention after 25 cycles between 1.2 V and 50 mV at the rate of 25 mA/g, respectively. In comparison, commercial SnO{sub 2} showed an initial capacity of 388 mA h/g, with only 23% capacity retention after 25 cycles.

• OSTI ID: 20784912
• Journal Information: Journal of Solid State Chemistry, Vol. 179, Issue 3; Other Information: DOI: 10.1016/j.jssc.2005.11.022; PII: S0022-4596(05)00565-7; Copyright (c) 2005 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); ISSN 0022-4596
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ADSORPTION
ANODES
DOPED MATERIALS
ELECTRIC BATTERIES
FLUORINE
FOURIER TRANSFORMATION
HEAT TREATMENTS
INFRARED SPECTRA
LITHIUM IONS
NANOSTRUCTURES
SOL-GEL PROCESS
SPECIFIC SURFACE AREA
SPECTROSCOPY
TIN OXIDES
TRANSMISSION ELECTRON MICROSCOPY
X-RAY DIFFRACTION