Veluchamy, A. and Doh, C.H. and Kim, D.H. and Lee, J.H. and Lee, D.J. and Gad, J,G, and Shina, H.M. and Jin, B.S. and Kim, H.S. and Moon, S.I. and Parke, C.W. (2009) Improvement of cycle behaviour of SiO/C anode composite by thermochemically generated Li4SiO4 inert phase for lithium batteries. Journal of Power Sources, 188 (2). pp. 574-577.

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Abstract

A new anode composite material is prepared by thermal treatment of a blend made of silicon monoxide (SiO) and lithium hydroxide (LiOH) at 550 ◦C followed by ball milling with graphite. X-ray diffraction pattern confirms the presence of Li4SiO4 in the thermally treated (SiO + LiOH) material. The electrode appears to be smooth and glassy as evident from observation with a scanning electron microscope (SEM), possibly due to the presence of nano-silicon and Li4SiO4 particles, and exhibits superior performance with a charge capacity of ∼333mAhg−1 at the 100th cycle with a low-capacity fade on cycling. Cyclic voltammograms of the electrode predict high power capability. On the other hand, the electrode comprising of only SiO and C prepared through ball milling, devoid of Li4SiO4, shows hard crust particulates in the electrode exhibiting low charge–discharge capacities with cycling

Item Type:	Article
Uncontrolled Keywords:	Silicon monoxide; Graphite; Li4SiO4; Thermal treatment; Anode; Lithium-ion battery
Subjects:	Lithium batteries
Divisions:	UNSPECIFIED
Depositing User:	TTBD CECRI
Date Deposited:	25 Feb 2012 15:42
Last Modified:	25 Feb 2012 15:42
URI:	http://cecri.csircentral.net/id/eprint/655

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