Nanocrystalline TiO2Electrodes Exhibiting High Storage Capacity and Stability in Rechargeable Lithium Batteries
Open Access
- 1 January 1995
- journal article
- research article
- Published by Hindawi Limited in Active and Passive Electronic Components
- Vol. 18 (1) , 23-30
- https://doi.org/10.1155/1995/74892
Abstract
Nanocrystalline TiO2films were explored for the first time as electrode material for a rechargeable lithium intercalation cell, i.e., Li/LiCF3SO3+ PC/TiO2. Two kinds of nanocrystalline films, TiO2F387 (Degussa) and TiO2colloid-240, were investigated. These films exhibited excellent performance renderings them a promising choice for secondary battery applications. At a current density of 0.01 mA/cm2, two voltage plateaus at 1.78 and 1.89 V were observed for TiO2F387 films during charge and discharge, respectively. The TiO2electrode charge capacity per unit weight rose with decreasing current density. The highest capacity, obtained at a current density of 0.005 mA/cm2and a final discharge voltage of 1.4 V, was 265 mAh/g corresponding to a lithium insertion ratio ofx= 0.8. Nanocrystalline TiO2colloid-240 films showed a similar performance. The cycle life of a TiO2colloid-240 cell at a high current density was found to be excellent; a capacity loss lower than 14% has been observed over 100 charge/discharge cycles.Keywords
Funding Information
- Commission pour l'encouragement de la recherche scientifique, Berne, Switzerland
This publication has 0 references indexed in Scilit: