| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for producing a lithium-manganese double oxide capable of giving a large charging and discharging capacity and excellent charging and discharging cycle properties in using a positive electrode-active material of a lithium secondary cell. SOLUTION: A water-soluble compound carboxylic ester complex oligomer is generated by reacting a compound containing a metal element constructing a lithium-manganese double oxide and soluble in an oxypolycarboxylic acid or water with a polyol and the oxypolycarboxylic acid and the resultant product is heat-decomposed, then annealed. As a method for the heat decomposition, preferably a solid component separated from the reaction solution is calcined or spray heat decomposed at 500-900 deg.C, and the annealing temperature is preferably 600-850 deg.C. |
