Synthesis of Nickel Cobalt Manganese Ternary Transition Metal Oxide from Mixed Hydroxide Precipitate as a Precursor to NCM811

Abstract

Sustainable green new and renewable energy is continuously developed along with the development of cheap and commercially available secondary energy storage such as Li-ion batteries (LIBs). Nickel-rich cathode material obtained from cheap raw materials can significantly reduce the overall LIBs production cost and improve the overall process feasibility. For the first time, Ni-rich cathode material precursor was synthesized from mixed hydroxide precipitate (MHP). Based on MHP characterization test, the nickel content is high but have slight Mn and Mg level. NCM precursors was prepared in three facile steps, i.e., acid leaching using cheap and environmentally friendly organic acids, coprecipitation using oxalic acid, and thermal decomposition of as-prepared oxalate precipitate. Based on FTIR and XRD analysis, high crystalline oxalate dihydrate precipitates were successfully obtained. The morphological feature of the precipitate is significantly affected by the type of leaching solution. Fine metal oxides precursor powders also were successfully prepared which is confirmed by XRD, FTIR, and SEM analysis and can be readily used for Ni-rich cathode material preparation. In this study, NCM-Ox-LA have the best characteristic properties.