Lithium Intercalation into Titanium Dioxide Films from a Propylene Carbonate Solution

Investigation of lithium diffusion in nano-sized rutile TiO2 by impedance spectroscopy

“…A comparison with previous electrochemical experimental D Li determination on micrometersized rutile electrodes with values in the range 10 −13 cm 2 /s [21,29] indicates a faster Li diffusion in the nano-sized rutile than in the micrometer-sized material, by about two orders of magnitude. In other respects, it must be recalled than values of 10 −12 cm 2 /s in thin-film rutile electrodes are reported [30] and values of 5 × 10 −12 and 10 −11 cm 2 /s are usually found in the anatase phase [29,31] which are very far from the surprising high values of 10 −6 proposed from first principle calculations [13,24,26,27] and from [14].…”

Gigantic Capacito-Energetic Parameters of Lithium-Intercalation Current Generation Reaction in Nanodispersed TiO2with Defective Structure

“…Analysis of the results obtained from investigations of lithium-intercalation processes in nanodispersed forms of titanium dioxide shows that the specific capacity (when discharging to a voltage down to 1 V) strongly depends on the methods of synthesis of nanodispersed forms, and it can vary from 335 mAh/g [11] to 600 mAh/g [12,13]. If the proportion of the mixed anatase-rutile phases and the magnitude of active surface area remain the same, but the conditions of the synthesis or annealing temperatures differ, the specific capacity may differ more than twice [14].…”

Anodically synthesized titania films for lithium batteries: Effect of titanium substrate and surface treatment

“…Whilst lithium insertion levels up to LiTiO 2 corresponding to a capacity of 335 mAh g −1 have been reported at room temperature, it is generally acknowledged that insertion up to Li 0.5 TiO 2 is reversible (168 mAh g −1 ) [1]. A number of techniques can be used to produce titania films and many have been utilised to examine the lithium insertion and extraction for lithium battery and electrochromic applications [2][3][4][5][6][7][8][9][10][11][12][13][14][15]. The preparation of titania films through anodising is one method that appears not to have been examined for lithium battery applications until recently, when we examined the performance of 80 nm films [16].…”