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High energy density lithium-ion batteries with carbon nanotube anodes

Published online by Cambridge University Press:  31 January 2011

Brian J. Landi ,
Cory D. Cress  and
Ryne P. Raffaelle
Brian J. Landi*
Affiliation:
Chemical and Biomedical Engineering, and NanoPower Research Labs, Rochester Institute of Technology, Rochester, New York 14623
Cory D. Cress*
Affiliation:
United States Naval Research Laboratory, Washington, District of Columbia
Ryne P. Raffaelle
Affiliation:
NanoPower Research Labs, Rochester Institute of Technology, Rochester, New York 14623
*
a)Address all correspondence to this author. e-mail: brian.landi@rit.edu
b)Both authors contributed equally to this publication.
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Abstract

Recent advancements using carbon nanotube electrodes show the ability for multifunctionality as a lithium-ion storage material and as an electrically conductive support for other high capacity materials like silicon or germanium. Experimental data show that replacement of conventional anode designs, which use graphite composites coated on copper foil, with a freestanding silicon-single-walled carbon nanotube (SWCNT) anode, can increase the usable anode capacity by up to 20 times. In this work, a series of calculations were performed to elucidate the relative improvement in battery energy density for such anodes paired with conventional LiCoO2, LiFePO4, and LiNiCoAlO2 cathodes. Results for theoretical flat plate prismatic batteries comprising freestanding silicon-SWCNT anodes with conventional cathodes show energy densities of 275 Wh/kg and 600 Wh/L to be theoretically achievable; this is a 50% improvement over today's commercial cells.

Keywords

NanostructureEnergy storageLi
Type
Articles
Information
Journal of Materials Research , Volume 25 , Issue 8: Materials for Electrical Energy Storage , August 2010 , pp. 1636 - 1644
Copyright
Copyright © Materials Research Society 2010

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References

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