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.