Electrochemical properties of Si/LiTi2O4 nanocomposite as anode materials for Li-ion secondary batteries
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review
Author(s)
Detail(s)
Original language | English |
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Pages (from-to) | 7-13 |
Journal / Publication | Journal of Electroanalytical Chemistry |
Volume | 616 |
Issue number | 1-2 |
Online published | 11 Jan 2008 |
Publication status | Published - 1 May 2008 |
Externally published | Yes |
Link(s)
Abstract
Si/LiTi2O4 nanocomposite film was synthesized by a sol–gel method in combination with a following heat-treatment process. Through this process, the nanosized Si particles were homogeneously distributed in the porous composite. The electrochemically less active LiTi2O4 working as a buffer matrix successfully prevented Si from cracking/crumbling during the charging/discharging process. The Si/LiTi2O4 nanocomposite exhibited a reversible lithium storage capacity of about 1100 mA h g−1 with good cyclability, suggesting its promising nature in anode materials for Li ion batteries. A two-parallel diffusion path model fitted well with the impedance data of porous Si/LiTi2O4 composite at different potentials. The impedance in the low-frequency region was directly related to the diffusion of Li ions, and the Li ion diffusivity was on the order of 10−13 cm2 s−1 based on the semi-infinite diffusion model.
Research Area(s)
- Si/LiTi2O4, Nanocomposite film, Sol–gel, Anode, Li ion batteries
Citation Format(s)
Electrochemical properties of Si/LiTi2O4 nanocomposite as anode materials for Li-ion secondary batteries. / Zeng, Z. Y.; Tu, J. P. ; Wang, X. L. et al.
In: Journal of Electroanalytical Chemistry, Vol. 616, No. 1-2, 01.05.2008, p. 7-13.
In: Journal of Electroanalytical Chemistry, Vol. 616, No. 1-2, 01.05.2008, p. 7-13.
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review