Nanosized anatase titanium dioxide loaded porous carbon nanofiber webs as anode materials for lithium-ion batteries

High specific capacity of TiO2-graphene nanocomposite as an anode material for lithium-ion batteries in an enlarged potential window

“…The broad current peaks at ∼0.5 V (Fig. 7c), are assigned to the irreversible reduction of the electrolyte and the formation of SEI film [19,39]. The current peaks at ∼0 V (Fig.…”

“…They found that a high reversible capacity can be achieved by using an enlarged potential window. Yang et al [19] prepared nanosized anatase TiO 2 loaded porous carbon nanofibers (TiO 2 /PCNFs), and the TiO 2 /PCNFs presented a super high charge capacity of 687.2 mAh g −1 at a current density of 25 mA g −1 between 0.001 and 3.0 V. All the reported results showed that TiO 2 -based materials possess high reversible capacities in an enlarged potential window. Therefore, it can be expected that TiO 2 -graphene nanocomposite should possess a high capacity and excellent rate capability in the enlarged potential window of 0.01-3.0 V due to the graphene not only as a conductive agent but also as a lithium storage material.…”

“…The current peaks at ∼0 V (Fig. 7c), are related with the complicated insertion of Li-ion into the graphene matrix [19], suggesting graphene acts as an anode material for lithium-ion batteries in the enlarged potential window during discharge/charge processes of the TiO 2 -graphene nanocomposite. So the increased lithium storage sites of the TiO 2 -graphene nanocomposite partially depend on graphene between 0.01 and 3.0 V, which is consistent with the result of the initial discharge/charge tests.…”

“…W [14], RuO 2 [15]) and using conductive coating (e.g. carbon [16][17][18][19][20][21], Sn [22], Ag [23]). …”

Nb-Doped TiO2 Nanofibers for Lithium Ion Batteries

“…One of them is the preparation of composite nanostructured electrodes interconnecting titania with a conducting additive nanophase (based on carbon), which improves the electron transfer. With this aim, porous carbon nanofibers loaded with TiO 2 nanoparticles, 21 composite TiO 2 /C 22 and TiO 2 /graphene nanofibers 23 with improved reversible capacity and high rate behaviour have been recently reported. Another approach is surface modification to promote faster Li + diffusion and electron transport, but also to suppress particle agglomeration.…”