The Effect of Oxygen Pressure on the Synthesis of LiNiO2

B.H. Kim; J.H. Kim; M.Y. Song; Takashi Ida; N. Ishizawa

doi:10.4028/www.scientific.net/SSP.124-126.1043

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The Effect of Oxygen Pressure on the Synthesis of LiNiO₂

Abstract:

To investigate the effect of oxygen pressure on the synthesis of LiNiO2 cathode material for Li secondary battery, powder was prepared by emulsion method and calcined at 750°C for 24 h under various oxygen gas pressures. LiNiO2 single phase could be synthesized under oxygen pressure of 101.3~103.3 kPa but not under air atmosphere. Cation mixing in Li site of LiNiO2 lowered as oxygen pressure increased and was saturated around 103.3 kPa. The lowest cation mixing, 7.0% of Ni3+ in the Li site was obtained at 750°C for 24 h under 103.3 kPa of oxygen pressure.