| 摘要 |
PROBLEM TO BE SOLVED: To provide a precursor for manufacturing a positive electrode activation substance of a lithium secondary battery having excellent electrochemical characteristics by enhancing uniformity and solid solubility of the constituting atoms. SOLUTION: This nickel-manganese compound is expressed by formula Ni1-x Mnx (OH)y (COO)z .nH2 O (0<=x<=0.55, y+z=2, 0.5<=z<=1.5, n>=0). This method for producing the nickel-manganese compound by reacting a nickel salt, a manganese salt and an ammonium oxalate is characterized in that A/B value (A is the sum of mol numbers of nickel and manganese, and B is a mol number of ammonium oxalate) is controlled within the range of 0.25 to 0.75. This application is a positive electrode active substance for the lithium secondary battery using the nickel-manganese compound. |
