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Proceedings Paper

Lithium vanadium oxides (Li1+xV3O8) as cathode materials in lithium-ion batteries for soldier portable power systems
Author(s): Gaojun Wang; Linfeng Chen; Gyanesh N. Mathur; Vijay K. Varadan
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Paper Abstract

Improving soldier portable power systems is very important for saving soldiers' lives and having a strategic advantage in a war. This paper reports our work on synthesizing lithium vanadium oxides (Li1+xV3O8) and developing their applications as the cathode (positive) materials in lithium-ion batteries for soldier portable power systems. Two synthesizing methods, solid-state reaction method and sol-gel method, are used in synthesizing lithium vanadium oxides, and the chemical reaction conditions are determined mainly based on thermogravimetric and differential thermogravimetric (TG-DTG) analysis. The synthesized lithium vanadium oxides are used as the active positive materials in the cathodes of prototype lithium-ion batteries. By using the new solid-state reaction technique proposed in this paper, lithium vanadium oxides can be synthesized at a lower temperature and in a shorter time, and the synthesized lithium vanadium oxide powders exhibit good crystal structures and good electrochemical properties. In the sol-gel method, different lithium source materials are used, and it is found that lithium nitrate (LiNO3) is better than lithium carbonate (Li2CO3) and lithium hydroxide (LiOH). The lithium vanadium oxides synthesized in this work have high specific charge and discharge capacities, which are helpful for reducing the sizes and weights, or increasing the power capacities, of soldier portable power systems.

Paper Details

Date Published: 15 April 2011
PDF: 8 pages
Proc. SPIE 7980, Nanosensors, Biosensors, and Info-Tech Sensors and Systems 2011, 798013 (15 April 2011); doi: 10.1117/12.885650
Show Author Affiliations
Gaojun Wang, Univ. of Arkansas (United States)
Global Institute of Nanotechnology in Engineering and Medicine Inc. (United States)
Linfeng Chen, Univ. of Arkansas (United States)
Global Institute of Nanotechnology in Engineering and Medicine Inc. (United States)
Gyanesh N. Mathur, Univ. of Arkansas (United States)
Global Institute of Nanotechnology in Engineering and Medicine Inc. (United States)
Vijay K. Varadan, Univ. of Arkansas (United States)
Global Institute of Nanotechnology in Engineering and Medicine Inc. (United States)


Published in SPIE Proceedings Vol. 7980:
Nanosensors, Biosensors, and Info-Tech Sensors and Systems 2011
Vijay K. Varadan, Editor(s)

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