| 摘要 |
PROBLEM TO BE SOLVED: To provide a manufacturing method by which a secondary battery positive electrode active material is manufactured at low costs and with high efficiency in which quality is uniform, sizes are fine, and filling density can be heightened. SOLUTION: In a manufacturing method for positive electrode active material shown by a general formula LiMx O2x (where M is an element of Ni, Mn, Co, Cr, Fe, or V, and (x) is 1 or 2), organic amine is added to mixture solution containing Li<+> and M<n+> (where (n) is the ion valence of M element) so as to precipitate M(OH)n , and hydrogen peroxide is added to M(OH)n formation solution so as to convert the M(OH)n into MOOH so as to precipitate Li2 O2 on MOOH particle surfaces. Li2 O2 -precipitated MOOH particles are dried, and MOOH powder is mixed into Li and M composite fatty acid metal salt compound solution. Thereafter, the same is dried so as to coat the surface of the powder by the Li and M composite fatty acid metal salt compound, and the coated powder is heat treated. |
