Comparative Study of NCA Cathode Material Synthesis Methods towards Their Structure Characteristics

The development of energy storage devices, i.e. Lithium ion batteries (LIBs) has become interesting due to the increasing utilization of renewable energies sources and electric vehicles. LiNiCoAlO2as LIBs cathode material is highly attractive for its high specific capacity and better thermal stability. The aim of this research is to investigate the effect of varying available synthesis methods in order to obtain better characterized NCA material. NCA powder was obtained from solid state synthesis[1], hydroxide co-precipitation synthesis, carbonate co-precipitation[2] and direct co-precipitation, denoted as NCA-SS, NCA-HC, NCA-CC and NCA-DC respectively, characterized using X-ray diffractometer. The structure study performed by comparing the results with commercial NCA XRD patterns and confirmed indexing the XRD patterns of the samples to JCPDS 871562. Based on the structural analysis, all sample exhibited well-ordered hexagonal layered structure. From the lattice parameter study, it is concluded that the best method was established by sample obtained from direct co-precipitation.