LAUSR

In this paper, LiCoO2 was prepared by combustion method. A hydrazine-based precursor was synthesized by four different routes using hydrazine hydrate as fuel and nitrilotriacetic acid as ligand in two routes. Precursors LCN-1 and LCN-3 were characterized by thermogravimetry and DSC. From thermogravimetry, it was observed that LiCoO2 was formed at low temperature around 450 °C, and decomposed precursors were characterized by FTIR and XRD. LiCoO2 obtained from LCN-1 and LCN-3, was further sintered from 700 to 900 °C, where the effect of sintering temperature on particle size was studied and the activation energy of LC-3 nanocrystal formation during calcinations was calculated to be 30.46 kJ mol−1. The particle size for LC-1 was found to decrease from 687 to 404 nm at 900 °C, whereas the particle size for LC-3 was found to increase from 555 to 748 nm at 900 °C. Average crystallite diameter and lattice distortions were calculated and compared with particle size, which shows that the growth of the LiCoO2 nanocrystals depends heavily on the calcination temperatures, which was applicable to only LC-3. Further LiCoO2 was doped with different metals like manganese, aluminum, and nickel by route I. LiCoO2 and doped LiCoO2 were characterized by FTIR, XRD, and SEM.