Chemistry of inorganic compounds – Oxygen or compound thereof – Metal containing
Reexamination Certificate
2011-06-14
2011-06-14
Bos, Steven (Department: 1736)
Chemistry of inorganic compounds
Oxygen or compound thereof
Metal containing
C423S065000, C423S179500, C429S231200
Reexamination Certificate
active
07959893
ABSTRACT:
The invention relates to a method for preparing a lithium and vanadium oxide and the thus obtained products. The method comprises preparing a precursor gel by reacting hydrogen peroxide with α-V2O5in an aqueous medium in the presence of a lithium precursor and exposing the gel to a heat treatment in an oxidant atmosphere at a temperature ranging from 260° C. to 580° C. A compound of a formula Li1+xV3O8, (0.1<x<0.25) comprises needle-shaped grains having a bimodal distibution, wherein the length (L) of the first distribution needles ranges from 10 to 50 μm and the length (L) of the second distribution needles ranges from 1 to 10 μm.
REFERENCES:
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Jinggang Xie et al., “Low-Temperature Sol-Gel Synthesis of Li1.2V308from V2O5Gel”, Materials Letters, vol. 57, 2003, pp. 2682-2687, XP002306017.
Bruno Alonso and Jacques Livage, “Synthesis of Vanadium Oxide Gels from Peroxovanadic Acid Solustion: A51V NMR Study”, Journal of Solid State Chemistry, vol. 148, 1999, pp. 16-19, XP002359453.
Craig J. Fontenot et al., “Vanadia Gel Synthesis via Peroxovanadate Precursors. 1. In Situ Laser Raman and51V NMR Characterization of the Gelation Process”, J. Phys. Chem. B., vol. 104, 2000, pp. 11622-11631, XP002359454.
G. Pistoia et al., “Li/LI1+xV308Secondary Batteries”, Journal of the Electrochemical Society, Electrochemical Society, vol. 137, No. 8, 1990, pp. 2365-2370, XP000231200.
International Search Report mailed Dec. 29, 2005.
Deschamps Marc
Dubarry Matthieu
Gaubicher Joël
Guyomard Dominique
Batscap
Bos Steven
Centre National de la Recherche Scientifique
Merchant & Gould
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