| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a positive electrode active material for a lithium secondary battery that is low in resistance, and to provide the lithium secondary battery that uses it. <P>SOLUTION: This is a positive electrode active material particle comprises a layered complex oxide, expressed by a chemical Formula Li<SB>a</SB>Co<SB>b</SB>M<SB>1-b</SB>O<SB>2</SB>(0<a≤1.2, 0<b≤1, and M contains at least one kind of either Ni or Mn), and the positive electrode active material for the lithium secondary battery in which the composition is different between inside the particle and outside the particle, and in which electrode resistance of the particle outer peripheral part is low. <P>COPYRIGHT: (C)2008,JPO&INPIT |
