1 research outputs found
Development of Bronze Phase Titanium Dioxide Nanorods for Use as Fast-Charging Anode Materials in Lithium-Ion Batteries
Bronze phase titanium
dioxide (TiO2(B)) nanorods were
successfully prepared via a hydrothermal method together with an ion
exchange process and calcination by using anatase titanium dioxide
precursors in the alkali hydrothermal system. TiO2 precursors
promoted the elongation of nanorod morphology. The different hydrothermal
temperatures and reaction times demonstrated that the synthesis parameters
had a significant influence on phase formation and physical morphologies
during the fabrication process. The effects of the synthesis conditions
on the tailoring of the crystal morphology were discussed. The growth
direction of the TiO2(B) nanorods was investigated by X-ray
diffractometry (XRD) and scanning electron microscopy (SEM). The as-synthesized
TiO2(B) nanorods obtained after calcination were used as
anode materials and tested the efficiency of Li-ion batteries. This
research will study the effects of particle morphologies and crystallinity
of TiO2(B) derived from a modified hydrothermal method
on the capacity and charging rate of the Li-ion battery. The TiO2(B) nanorods, which were synthesized by using a hydrothermal
temperature of 220 °C for 12 h, presented excellent electrochemical
performance with the highest Li storage capacity (348.8 mAh/g for
100 cycles at a current density of 100 mA/g) and excellent high-rate
cycling capability (a specific capacity of 207.3 mAh/g for 1000 cycles
at a rate of 5000 mA/g)