Anisotropic Vanadium Oxide Nanostructured Host Matrices for Lithium Ion Intercalation

O'Dwyer, C.; Lavayen, V.; Santa Ana, M. A.; Benavente, E.; González, G.; Sotomayor Torres, C. M.

doi:https://doi.org/10.1155/2007/32528

Advances in Physical Chemistry

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Research Letter | Open Access

Volume 2007 | Article ID 032528 | https://doi.org/10.1155/2007/32528

Anisotropic Vanadium Oxide Nanostructured Host Matrices for Lithium Ion Intercalation

C. O'Dwyer,¹V. Lavayen,^1,2M. A. Santa Ana,²E. Benavente,³G. González,²and C. M. Sotomayor Torres^1,4,5

Academic Editor: David L. Andrews

Received26 Jun 2007

Accepted06 Aug 2007

Published28 Aug 2007

Abstract

We report on unique high-volume low-dimensional V2O5-based turbostratic nanostructures, prepared using sol-gel synthetic methods from V2O5⋅nH2O xerogels. Electrochemical intercalation of Li+ to form Li0.65V2O5 resulted in a maximum measured charge capacity of 1225 mAh g−1 as the β-LixV2O5 phase. Conductivities of the order of 10⁻³ S cm⁻¹ were found on compressed-nanotube parallelepipedal samples, which exhibit an anisotropy factor of 70 at room temperature by preferential alignment of the nanotubes. The improved electrochemical properties observed in novel vanadium oxide nanostructured arrays are attributed to the increased volumetric density for ion intercalation, shorter diffusion paths to the intercalation sites, and a high degree of crystallinity of the individual nanotubular host structures.

References

R. Schöllhorn, Physics of Intercalation Compounds, Springer, Berlin, Germany, 1981.
M. S. Whittingham, “Lithium batteries and cathode materials,” Chemical Reviews, vol. 104, no. 10, pp. 4271–4302, 2004.
View at: Publisher Site | Google Scholar
M. E. Spahr, P. Stoschitzki-Bitterli, R. Nesper, O. Haas, and P. Novák, “Vanadium oxide nanotubes. A new nanostructured redox-active material for the electrochemical insertion of lithium,” Journal of the Electrochemical Society, vol. 146, no. 8, pp. 2780–2783, 1999.
View at: Publisher Site | Google Scholar
Y. Wang and G. Z. Cao, “Synthesis and enhanced intercalation properties of nanostructured vanadium oxides,” Chemistry of Materials, vol. 18, no. 12, pp. 2787–2804, 2006.
View at: Publisher Site | Google Scholar
Y. Wang, K. Takahashi, K. H. Lee, and G. Z. Cao, “Nanostructured vanadium oxide electrodes for enhanced lithium-ion intercalation,” Advanced Functional Materials, vol. 16, no. 9, pp. 1133–1144, 2006.
View at: Publisher Site | Google Scholar
V. Lavayen, C. O'Dwyer, M. A. Santa Ana et al., “Comparative structural-vibrational study of nano-urchin and nanorods of vanadium oxide,” Physica Status Solidi B, vol. 243, no. 13, pp. 3285–3289, 2006.
View at: Publisher Site | Google Scholar
C. O'Dwyer, V. Lavayen, S. B. Newcomb et al., “Atomic layer structure of vanadium oxide nanotubes grown on nanourchin structures,” Electrochemical and Solid-State Letters, vol. 10, no. 4, pp. A111–A114, 2007.
View at: Publisher Site | Google Scholar
C. O'Dwyer, D. Navas, V. Lavayen et al., “Nano-urchin: the formation and structure of high-density spherical clusters of vanadium oxide nanotubes,” Chemistry of Materials, vol. 18, no. 13, pp. 3016–3022, 2006.
View at: Publisher Site | Google Scholar
V. Lavayen, C. O'Dwyer, G. González, G. Cárdenas, and C. M. Sotomayor Torres, “Towards thiol functionalization of vanadium pentoxide nanotubes using gold nanoparticles,” Materials Research Bulletin, vol. 42, no. 4, pp. 674–685, 2007.
View at: Publisher Site | Google Scholar
C. O'Dwyer, V. Lavayen, S. B. Newcomb et al., “Vanadate conformation variations in vanadium pentoxide nanostructures,” Journal of the Electrochemical Society, vol. 154, no. 8, pp. K29–K35, 2007.
View at: Publisher Site | Google Scholar
V. Sánchez, E. Benavente, V. Lavayen et al., “Pressure induced anisotropy of electrical conductivity in polycrystalline molybdenum disulfide,” Applied Surface Science, vol. 252, no. 22, pp. 7941–7947, 2006.
View at: Publisher Site | Google Scholar
V. Lavayen, N. Mirabal, C. O'Dwyer et al., “The formation of nanotubes and nanocoils of molybdenum disulphide,” Applied Surface Science, vol. 253, no. 12, pp. 5185–5190, 2007.
View at: Publisher Site | Google Scholar
H.-J. Muhr, F. Krumeich, U. P. Schönholzer et al., “Vanadium oxide nanotubes—a new flexible vanadate nanophase,” Advanced Materials, vol. 12, no. 3, pp. 231–234, 2000.
View at: Publisher Site | Google Scholar
Y. Wang, H. Shang, T. Chou, and G. Z. Cao, “Effects of thermal annealing on the ${Li}^{+}$ intercalation properties of $V_{2} O_{5} \cdot n H_{2} O$ xerogel films,” Journal of Physical Chemistry B, vol. 109, no. 22, pp. 11361–11366, 2005.
View at: Publisher Site | Google Scholar
K. West, B. Zachau-Christiansen, T. Jacobsen, and S. Skaarup, “Lithium insertion into vanadium pentoxide bronzes,” Solid State Ionics, vol. 76, no. 1-2, pp. 15–21, 1995.
View at: Publisher Site | Google Scholar
K. Lee, Y. Wang, and G. Z. Cao, “Dependence of electrochemical properties of vanadium oxide films on their nano- and microstructures,” Journal of Physical Chemistry B, vol. 109, no. 35, pp. 16700–16704, 2005.
View at: Publisher Site | Google Scholar

Copyright

Copyright © 2007 C. O'Dwyer et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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