Abstract
Ordered mesoporous TiO 2 films with high surface area and narrow pore size distribution have been synthesized by using triblock copolymer as the structure - directing agent in nonaqueous media. Electrochemical properties of mesoporous anatase TiO 2 films have been studied by using cyclic voltammogram and potential step techniques. Large Li + insertion capacitity was observed by cyclic voltammogram, and the double - layer capacitance has significant effect on cyclic voltammogram curves. The charge transfer coefficient is in the range of 0.15-0.4 for Li + extraction, and the diffusion coefficient is estimated to be in the range of (4.71-55.8) × 10 -12cm 2/s. These results show that the electrochemical properties of Li + ion insertion of mesoporous anatase TiO 2 films with high surface area are different from those of normal TiO 2 films prepared without surfactant.
| Translated title of the contribution | Electrochemical property of ordered mesoporous TiO 2 films |
|---|---|
| Original language | Chinese |
| Pages (from-to) | 1226-1229 |
| Number of pages | 4 |
| Journal | Acta Chimica Sinica |
| Volume | 58 |
| Issue number | 10 |
| Publication status | Published - 1 Dec 2000 |
| Externally published | Yes |
Keywords
- Li insertion/extraction
- Mesoporous
- TiO films