This product is a nickel cobalt manganese lithium (NCM90) polycrystalline cathode material developed for lithium-ion battery research and experimental applications. It exhibits a spherical morphology and is characterized by high first-cycle efficiency and specific capacity, making it relevant for studying high-nickel NCM electrode performance. Due to its pronounced moisture sensitivity, vacuum-sealed storage and strict humidity control are required throughout handling and processing. For electrochemical evaluation, the recommended electrolyte is NCM electrolyte (KLD-1230C), and electrode preparation involves baking at 85 °C for 4 hours. Available in quantities from 20 g to 1 kg, this material is suitable for half-cell testing and serves as a reliable reference for exploring polycrystalline NCM90 systems in advanced cathode development.