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Issue 19, 2009
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Flame spray-pyrolyzed vanadium oxide nanoparticles for lithium battery cathodes

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Abstract

Vanadium pentoxide (V2O5) nanoparticles (30–60 nm) were made by a one-step and scalable flame spray pyrolysis (FSP) process. Optimization of the FSP processing conditions (precursor concentration and injection rate) enhanced the electrochemical performance of these nanoparticles. Increasing the cut-off potential for discharging from 1.5 to 2.5 V vs. Li/Li+ improved the cycle life of these V2O5 nanoparticles. Particles with the lowest specific surface area (∼32 m2 g−1) and highest phase purity (up to 98 wt%) showed excellent cyclability between 2.5 and 4.0 V vs. Li/Li+, retaining a specific charge of 110 mAh g−1 beyond 100 cycles at a specific current of 100 mA g−1, and also superior specific charge of 100 mAh g−1 at specific current up to 20C rate (or 2000 mA g−1).

Graphical abstract: Flame spray-pyrolyzed vanadium oxide nanoparticles for lithium battery cathodes

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Publication details

The article was received on 28 Nov 2008, accepted on 18 Feb 2009 and first published on 14 Mar 2009


Article type: Paper
DOI: 10.1039/B821389P
Citation: Phys. Chem. Chem. Phys., 2009,11, 3748-3755
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    Flame spray-pyrolyzed vanadium oxide nanoparticles for lithium battery cathodes

    S. Ng, T. J. Patey, R. Büchel, F. Krumeich, J. Wang, H. Liu, S. E. Pratsinis and P. Novák, Phys. Chem. Chem. Phys., 2009, 11, 3748
    DOI: 10.1039/B821389P

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