Synthesis and Application of NaNi0.5Ti0.5O2 as Electrode Material for Sodium Ion Batteries

In this work, NaNi0.5Ti0.5O2 cathode materials of sodium ion batteries were synthesized by a pre-milling combined with solid-state reaction method using hydroxide (NaOH), nickel (II) acetate (2(CH3COO)Ni.4H2O), and titanium dioxide (TiO2) as the precursors. Results X-ray diffraction analysis obtained after milling calcination processes revealed that increment time improved reactivity NaOH TiO2, thereby significantly reduced content NiO impurity in product. The as-synthesized material possessed an excellent electrochemical performance 77% capacity (compared to second cycle) retained 50 cycles charge/discharge, 60% retention when rate charge/discharge increased from 0.5 8 C.