| abstract |
The invention provides to offer a process of manufacturing lithium containing oxides represented by a formula LiNixCo(1-x)O2, or a formula LiNixMn(1-x)O2, having almost single phase, through completely replacing a part of Ni with Co or Mn. As the single phase structure has the advantage that Li mobility in crystal is high, the positive active materials having almost single phase show a large capacity and an excellent cycle characteristics. n According to the method, the positive active materials of lithium containing oxides are prepared by burning lithium compounds and composite hydroxides comprizing Ni and Co, or Ni and Mn. Said composite hydroxides are obtained through coprecipitation of nickel and cobalt hydroxides, or nickel and manganese hydroxides by adding caustic alkali aqueous solutions to mixed solutions containing nickel and cobalt salts or nickel and manganese salts. |