Journal
MICROPOROUS AND MESOPOROUS MATERIALS
Volume 151, Issue -, Pages 172-179Publisher
ELSEVIER
DOI: 10.1016/j.micromeso.2011.10.040
Keywords
Ordered mesoporous materials; TiO2; SnO2; Anode; Lithium ion batteries
Categories
Funding
- fundamental R & D program for core technology of materials [TS117-17-1]
- Ministry of Knowledge Economy, Republic of Korea
Ask authors/readers for more resources
Herein, we employed the tetra-constituent co-assembly method based on the acid-base pair of Sn and Ti precursors. Using this method, novel mesoporous carbon-TiO2-SnO2 nanocomposite materials were prepared and their structural change with an increase of SnO2 amount was investigated. In low amount of SnO2, an ordered mesoporous structure was observed but it became collapsed at 64 wt.% SnO2, while crystal size of anatase TiO2 embedded within amorphous SnO2 and carbon matrix became larger. When applied to anode materials in lithium ion batteries, an increase of the reaction peaks of Li+ in SnO2 was observed and peak associated with discharging in TiO2 nano-crystal increased in spite of lower amount of TiO2. This indicated that TiO2 was highly utilized for lithium storage (275 mAh g(-1) in 19.9 wt.% TiO2 case). In the nanocomposite electrode with 28.8% TiO2, however, a high rate performance and a very stable cycle performance (95.3% retention at 40th cycles) were observed, which was attributed to the stable nanostructure. (c) 2011 Elsevier Inc. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available