| 摘要 |
<p>A positive electrode active material for a nonaqueous electrolyte secondary cell which comprises a composite oxide having the formula (1): (Li1-xMx)a(Co1-yMy)bOc being obtained by substituting a part of lithium and a part of cobalt in the crystal structure of LiCoOc with an element M, wherein the element M is at least one selected from the group of Al, Cu, Zn, Mg, Ca, Ba and Sr, and 0.02 ≤ x + y ≤ 0.15, 0.90 ≤ a/b ≤ 1.10, and 1.8 ≤ c ≤ 2.2 are satisfied.</p> |
