| 摘要 |
<P>PROBLEM TO BE SOLVED: To obtain a lithium-manganese-nickel composite oxide with a spinel crystal structure in which a spinel structure single phase wherein the entering of manganese and nickel into their solid solution is sufficiently progressed is realized, and also, a powder state capable of attaining high packing density is secured. <P>SOLUTION: A mixed aqueous solution of an aqueous lithium salt, manganese nitrate and nickel nitrate is admixed with a nonionic aqueous solution organic compound comprising no metallic ions so as to be 1/10M to 1/5M based on M as the total molar number of Li, Mn and Ni, thereafter, moisture and nitrate groups in the mixed aqueous solution are removed under heating at ≥150°C to synthesize a lithium-manganese-nickel composite oxide precursor, and further, the synthesized composite oxide precursor is heat-treated in an oxygen atmosphere. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
