Chemical-vapor deposition-based template synthesis of microtubular TiS{sub 2} battery electrodes
- Colorado State Univ., Fort Collins, CO (United States). Dept. of Chemistry
- Osaka Univ., Suita (Japan). Dept. of Applied Chemistry
The authors have been exploring a general route for preparing nanomaterials called template synthesis. The application of the template method to the preparation of microtubular battery electrodes is described here. The template method is used to prepare a current collector that consists of an ensemble of metal microtubules that protrude from a metal surface like the bristles of a brush. Chemical vapor deposition is then used to coat this high surface area microtubule-based current collector with a thin skin of the desired Li{sup +}-intercalation material, in this case TiS{sub 2}. In this way, a thin-walled tubule of TiS{sub 2} is formed on the outer surface of each metal microtubule. The thin walls of these TiS{sub 2} tubes insure that the distance over which Li{sup +} must diffuse is small, and the high surface area insures that the current density is low. These microtubular TiS{sub 2} electrodes showed higher capacities, lower resistance, and lower susceptibility to slow electron transfer kinetics than thin film (control) TiS{sub 2} electrodes prepared form the same amount of TiS{sub 2}.
- Sponsoring Organization:
- USDOE Office of Energy Research, Washington, DC (United States)
- DOE Contract Number:
- FG03-95ER14576
- OSTI ID:
- 603754
- Journal Information:
- Journal of the Electrochemical Society, Vol. 144, Issue 12; Other Information: PBD: Dec 1997
- Country of Publication:
- United States
- Language:
- English
Similar Records
Sol-gel-based template synthesis and Li-insertion rate performance of nanostructured vanadium pentoxide
Template synthesis of polypyrrole-coated spinel LiMn{sub 2}O{sub 4} nanotubules and their properties as cathode active materials for lithium batteries