• US 20130164623A1
  • Filed: 08/22/2011
  • Published: 06/27/2013
  • Est. Priority Date: 09/02/2010
  • Status: Active Grant
First Claim
Patent Images

1. A positive electrode active material that is represented by the following formula (I) and has a BET specific surface area of larger than 5 m2/g and not larger than 15 m2/g:

  • LixM1yM31-yO2

    (I)wherein M1 is at least one transition metal element selected from Group 5 elements and Group 6 elements of the Periodic Table, M3 is at least one transition metal element other than M1 and selected from among transition metal elements excluding Fe, x is not less than 0.9 and not more than 1.3, and y is more than 0 and less than 1.

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