Malic acid complex method for preparation of LiNiVO4 nano-crystallites

LiNiVO4 nano-crystallites were prepared by the polymerized complex method using Li2CO3, Ni(CH3COO)2 4H2O and NH4VO3 as starting reagents and malic acid as a complexing agent. With the subsequent calcination at 450 C, the powder analyzed by XRD, FTIR, Raman, electron diffraction, SEM and TEM techniques was found to be inverse spinel LiNiVO4 with ~20 nm in diameter. TGA shows continuous weight loss at 40–450 C due to the evaporation and decomposition processes. Above 450 C, weight percent tended to be constant. In addition, formation mechanism of the purified LiNiVO4 was proposed to relate with the experimental results.