Priyanka, H.M. and Nithya, C. and Shilpa, J. and Mathur, R.B. (2013) Development of free standing anodes of high aspect ratio carbon materials for rechargeable Li-ion batteries. Electrochimica Acta, 92. pp. 55-63. ISSN 0013-4686

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Abstract

Carbon materials of various types have been extensively used as negative electrode materials for rechargeable Li-ion batteries because of their consistent performance and potentialities. High aspect ratio (>1000) carbons such as carbon fibers and multiwalled carbon nanotubes (MWCNTs) of different dimensions have been employed to fabricate free standing anode materials. Various characterization techniques such as SEM, TEM, TGA, XRD, Raman spectroscopy, mercury intrusion porosimetry has been carried out to evaluate the structure of the anode that was further correlated to its performance in Li-ion cell. MWCNTs prepared under specified conditions not only exhibits high purity and crystallinity in structure but also shows exceptional electrochemical behavior of increasing capacity with successive cycling. This is probably due to the formation of a very constructive SEI with negligible charge transfer resistance as shown by the Nyquist plots.

Item Type:	Article
Uncontrolled Keywords:	Carbon fiber Electrode, Multiwalled carbon nanotubes, Solid–electrolyte interface, Specific capacity
Subjects:	Lithium batteries Electrochemical Power Sources
Divisions:	UNSPECIFIED
Depositing User:	Dr. N Meyyappan
Date Deposited:	30 Dec 2013 13:15
Last Modified:	30 Dec 2013 13:47
URI:	http://cecri.csircentral.net/id/eprint/3054

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