Abstract
Physically and chemically adsorbed water is present in water-assisted crystallization of amorphous titanium dioxide (TiO 2 ) nanoparticles. In this case, the trend follows a decrease in crystallinity with an increase of water content, which can dramatically change the charge storage kinetics of the transition metal oxide electrode for metal ion batteries. Through this work, we will investigate the effect of water on TiO 2 nanoparticles with controlled crystallinity and uniform size. The removal of water via heat treatments will allow a variety of water containing TiO 2 nanoparticle to be analyzed and may refine the crystallinity of TiO 2 nanoparticle to become a more efficient anode. This phenomenon could improve the charge and discharge capacity of the material. Moreover, complete removal of water from the TiO 2 nanoparticle could negatively affect Li-ion diffusion through the crystal. This research intends to identify the optimal heat treatment to remove the optimal quantity of water from TiO 2 nanoparticles by annealing at 120, 200, 300, and 400°C and electrochemically testing via half-cell batteries. Through the study, we can understand the intricacies of water on the performance of the anatase TiO 2 anodes for LIBs.
Original language | American English |
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State | Published - 12 Jul 2019 |