Synthesis and Electrochemical Studies on LiCoVO_4 Surface Modified with La_2O_3 for Lithium-ion Cells

摘要

1 Results An inverse spinel LiCoVO4 cathode material was synthesized by a citric acid-urea polymeric method, calcined at 773 K for 5 h. The synthesized LiCoVO4 sample was surface modified with various wt.% of La2O3 by a polymeric process, calcined at 873 K for 2 h. The samples were characterized by XRD, FTIR, SEM, and TEM techniques. XRD patterns exposed that single-phase crystallinity occurred when they were heated at 773 K for 5 h in air. For the La2O3 coated samples, there was no evident signal corre...