TiO2 nanotubes in lithium-ion batteries
In this contribution we report on electrochemical approaches in TiO2 based electrodes synthesis. TiO2
nanotubes (NTs) were synthesized following a facile anodization of titanium sheets. Optimizing the experimental
conditions two electrodes with NTs lengths of ~ 10 μm (Long) and ~ 2 μm (Short), were obtained. At the end of the
anodization the amorphous TiO2 (a-TiO2) was thermally treated to promote the conversion in the anatase crystal phase (c-
TiO2). Both the Long and Short NTs electrodes were tested for their applications as anodes in lithium-ion batteries
(LIBs). A preliminary comparison was performed to evaluate the role of a-TiO2 and c-TiO2 phases. Here, Short a-TiO2
NTs exhibited a fast storage rate respect to Short c-TiO2. Comparing the NTs length, Long a-TiO2 electrodes exhibited
the highest specific capacity, close to the theoretical value. Furthermore, all the electrodes tested showed an excellent
capacity retention proceeding with Discharge/Charge cycles.