Synthesis and Characterization of LixZryOz Compounds

Four kinds Of crystalline phase LixZryOz compounds with high purity are synthesized by high-temperature solid-state reaction, and the influences of different reagents, calcination temperatures and calcination time on the LixZryOz synthesis are also studied systematically. XRD, SEM and BET are employed to analyse the crystal phase structures, morphologies and Surface area of the final products respectively. The experimental results indicate that monoclinic phase Li2ZrO3 could be Produced with Li2CO3 and commercial ZrO2 at suitable conditions, tetragonal phase Li2ZrO3 and triclinic/monoclinic phase Li6ZrO7 with LiOH and ZrO2,; Further, with the substitution of ZrO2, by Zr(NO3)(4)-5H(2)O, the re-crystallization time for monoclinic phase Li6Zr2O7 is remarkably shortened from 96 h to 24 h. SEM images show that the particle radii range within 1 similar to 10 mu m with serious agglomeration; The BET analysis shows that the surface area of products distributes between 1.0 m(2).g(-1) and 9.0 m(2).g(-1). The superfluous lithium in initial reactants and high-temperature calcination resulted in the larger particle radio and Serious agglomeration of the final products.