Abstract
Lithium ion batteries (LIBs) based on solid state electrolytes have attracted much attention for their high safety and energy density. Li_(29)Zr_9Nb_3O_(40) powders as Li-ionic conductors were prepared using a sol-gel method in this work, and the related ceramics were sintered in air or in an oxygen-deficient atmosphere in which sample was covered with corundum crucible. All the sintered ceramics are consisted of orthorhombic phase. Li_(29)Zr_9Nb_3O_(40) ceramic sintered in oxygen-deficient atmosphere has conductivity of 1.03 × 10~(-3) S cm~(-1) at room temperature and has ionic transference number of 0.9996, while the ceramic sintered in air has conductivity of 4.41 × 10~(-5) S cm~(-1). The influence of oxygen vacancy on the migration path of Li-ion was discussed. The migration paths of Li-ions between two kinds of Li_(29)Zr_9Nb_3O_(40) ceramics were simulated and visualized by method of bond valence site energy with VESTA software.
NSTL
Elsevier