Nanocrystalline TiO2 Electrodes Exhibiting High Storage Capacity and Stability in Rechargeable Lithium Batteries
Nanocrystalline TiO2 films 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, TiO2 F387 (Degussa) and TiO2 colloid-240, were investigated. These films exhibited excellent performance r...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
1995-01-01
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| Series: | Active and Passive Electronic Components |
| Online Access: | http://dx.doi.org/10.1155/1995/74892 |
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| Summary: | Nanocrystalline TiO2 films 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, TiO2
F387 (Degussa) and TiO2 colloid-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 TiO2 F387 films during charge and
discharge, respectively. The TiO2 electrode charge capacity per unit weight rose with decreasing
current density. The highest capacity, obtained at a current density of 0.005 mA/cm2 and a final
discharge voltage of 1.4 V, was 265 mAh/g corresponding to a lithium insertion ratio of x = 0.8.
Nanocrystalline TiO2 colloid-240 films showed a similar performance. The cycle life of a TiO2
colloid-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. |
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| ISSN: | 0882-7516 1563-5031 |