2022 Volume 59 Issue 7 Pages 324-330
Mechanical synthesis of lithium titanate hydrate (LHTO: Li1.81H0.19Ti2O5·xH2O) in liquid phase was investigated using a bead mill. LHTO has layered crystal structure which leads to form thin plate particles. As starting materials, lithium hydroxide which was dissolved in water and titanium dioxide nanoparticles were used. As bead media, 0.3, 0.5 and 1 mm diameter of zirconia balls were employed. At least some amount of LHTO was formed at each bead size condition. In cases of 0.3 and 0.5 mm beads, crystallization of LHTO looked not to proceed after some hours. After 5 hours, the most crystallized LHTO was synthesized at 1 mm beads. Some of observed particles showed thin plate shape but the greater part of particles were fine particles in the obtained powder. It was supposed that synthesized LHTO particles were broken faster than crystals of LHTO grew up since small bead media performed high grinding ability.
