Chemical-vapor deposition-based template synthesis of microtubular TiS{sub 2} battery electrodes

Journal Article · Mon Dec 01 04:00:00 EST 1997 · Journal of the Electrochemical Society

DOI:https://doi.org/10.1149/1.1838181· OSTI ID:603754

Che, G; Jirage, K B; Fisher, E R; Martin, C R ^[1]; Yoneyama, Hiroshi ^[2]

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1. Colorado State Univ., Fort Collins, CO (United States). Dept. of Chemistry
2. 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, Journal Name: Journal of the Electrochemical Society Journal Issue: 12 Vol. 144; ISSN JESOAN; ISSN 0013-4651
• Country of Publication: United States
• Language: English

Related Subjects

25 ENERGY STORAGE
36 MATERIALS SCIENCE
CHARGE COLLECTION
CHEMICAL VAPOR DEPOSITION
ELECTRODES
ELECTRON TRANSFER
IMPREGNATION
LITHIUM
METAL-NONMETAL BATTERIES
TITANIUM SULFIDES