Skip to main content Accessibility help

Spectroscopic Investigation of Lithium Intercalation in Thin Films of Anatase Titanium Dioxide

  • R. Van De Krol (a1), A. Goossens (a1) and J. Schoonman (a1)


Thin films of anatase TiO2 have been deposited on tin-doped indium oxide (ITO) and Sb-doped tin oxide using electron beam evaporation. Subsequently these samples have been mounted into an electrochemical cell. Assuming a composition of LixTiO2 with x being 0.5 or 1, voltammetric measurements show that all lithium is present within the first 15 or 7.5 nm of the TiO2 film, respectively. Stepped potential experiments in combination with optical transmission measurements show that de-intercalation is much faster than intercalation. Differential absorption spectra as a function of intercalation potential suggest that the observed dark coloring of intercalated anatase can be attributed to electron traps at Li+ sites. This contradicts assumptions made in literature that the coloring mechanism of anatase is based on intervalence charge transfer from Ti4+ to Ti3+.



Hide All
1 Hagfeldt, A., Vlachopoulos, N., Grätzel, M., J. Electrochem. Soc., 141,L82 (1994).
2 Ottaviani, M., Panero, M., Morzilli, S., Scrosati, B., Solid State Ionics, 20,197 (1986).
3 Ohzuku, T., Hirai, T., Electrochim. Acta, 27,1263 (1982).
4 Granqvist, C.G., Solid State Ionics, 479, 5356 (1992).
5 Macklin, W.J., Neat, RJ., Solid State Ionics, 694,5356 (1992).
6 Ohzuku, T., Takehara, Z., Yoshizawa, S., Morzilli, S., Electrochim. Acta, 24,219 (1979).
7 Kavan, L., Grätzel, M., Gilbert, S.E., Klemenz, C., Scheel, H.J., J. Am. Chem. Soc., 118,6716 (1996).
8 Cantão, M.P., Cisneros, J.I., Torresi, R.M., Thin Solid Films, 259,70 (1995).
9 Cantão, M.P., Cisneros, J.I., Torresi, R.M., J. Phys. Chem., 98,4865 (1994).
10 Enright, B., Fitzmaurice, D., J. Phys. Chem., 100,1027 (1996).


Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed