Electrosynthesis of Ni-Rich Cathode Materials for Li-Ion Batteries
Keywords:
NCA, Electrosynthesis, Calcination Temperature, NCA cathode, Lithium BatteryAbstract
This study develops an electrosynthesis method for LiNi₀.₈₉Co₀.₀₈Al₀.₀₃O₂ (NCA) cathode materials, utilizing water oxidation to generate hydroxide ions for precursor precipitation. Systematic characterization reveals calcination temperature critically governs morphology and performance: 600°C yields porous particles with residual hydroxides, 800°C produces dense, well-crystallized structures with optimal porosity, while 950°C causes over-sintering and Al segregation. EDX shows temperature-dependent elemental distribution, with 800°C achieving ideal Ni/Co/Al integration. XRD confirms layered phase formation, and TG/DTA tracks thermal decomposition. Optimal conditions (1.5 A, 1 M concentration, 800°C calcination) yield NCA cathodes with enhanced structural stability and electrochemical activity. The work demonstrates electrosynthesis as a sustainable, controllable route for high-performance NCA production.
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