Abstract A new mesoporous carbon-tin (MC-Sn) nanocomposite has been successfully prepared via a two-step method. From the transmission electron microscopy (TEM) observations, the tin nanoparticles were decorated on the as-prepared mesoporous carbons. The mesoprous structure of the carbon can effectively buffer the volume changes during the Li-Sn alloying and de-alloying cycles. The as-prepared MC/Sn nanocomposite electrodes exhibited extremely good cycling stability, with the specific capacity of Sn in the composite electrode calculated to be 959.7 mAh•g-1, which amounts to an impressive 96.9% of the theoretical value (990 mAh•g-1). The reversible capacity after 200 cycles is 96.1% of the first cycle reversible capacity, i.e., the capacity fade rate is only 0.0195% per cycle, which is even better than that of commercial graphite-based anodes.
Received: 11 December 2007,
Published: 10 October 2009
Corresponding Authors:
H.K.Liu
Cite this article:
Z.W.Zhao,Z.P.Guo,P.Yao et al. Mesoporous Carbon-Tin Nanocomposites as Anode Materials for Li-ion Battery. J. Mater. Sci. Technol., 2008, 24(04): 657-660 .
