Patent ID: 8440353

Claim:
A lithium mixed metal oxide containing Li, Mn and M (M represents at least one metal element, and is free from Li or Mn) with the amount (mol) of Li being not less than 1.4 and not more than 1.8 with respect to the total amount (mol) of Mn and M, and having a peak around 1.5 Å (peak A), a peak around 2.5 Å (peak B), and the value of I B /I A is not less than 0.15 and not more than 0.9 in a radial distribution function obtained by subjecting an extended X-ray absorption fine structure (EXAFS) spectrum at K absorption edge of Mn in the oxide to the Fourier transformation, wherein I A is the intensity of peak A and I B is the intensity of peak B.