File
Authors
Keywords
TiO2/Si composite
Li-ion battery anode
Sol-gel method
Gas-deposition
Li-ion diffusion
Abstract
Composites of rutile-type TiO2 and Si were synthesized by a facile sol-gel method for a high-performance anode of Li-ion battery. We have investigated anode performance of binder-free thick-film electrodes prepared by a gas-deposition method using the TiO2/Si composites obtained. The composite electrode exhibited a remarkably improved cyclability and a good high-rate performance: a discharge capacity at the 900th cycle was 710 mA h g–1, and a specific capacity per Si weight was as large as 1870 mA h g(Si)–1 even at a high current rate of 4.8C. It is suggested that a fast Li-ion diffusion in TiO2 provides smooth insertion/extraction of Li-ion into/from the composite electrodes. The results offer a utility of rutile TiO2 as a Li-ion conductor in Si-based electrodes for the next-generation Li-ion battery.
Publisher
Elsevier
Content Type
Journal Article
Link
ISSN・ISBN
0013-4686
NCID
AA11525861
Journal Title
Electrochimica acta
Current Journal Title
Electrochimica acta
Volume
111
Start Page
575
End Page
580
Published Date
2013-11-30
Publisher-DOI
Text Version
Author
Rights
Copyright © 2013 Elsevier B.V. All rights reserved. This manuscript version is made available under the CC-BY-NC-ND 4.0 license https://creativecommons.org/licenses/by-nc-nd/4.0/
Citation
Electrochimica acta. 2013, 111, 575-580
Department
Faculty of Engineering/Graduate School of Engineering
Language
English