Positive electrode active material for lithium secondary battery

Positive electrode active material for lithium secondary battery

  • CN 102,272,984 A
  • Filed: 01/06/2010
  • Published: 12/07/2011
  • Est. Priority Date: 01/06/2009
  • Status: Active Application
First Claim
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1. positive electrode active materials, it comprises:

  • By the lithium nickel-manganese-cobalt/cobalt oxide of formula (1) expression, the nickel content of wherein said lithium nickel-manganese-cobalt/cobalt oxide is all accounting at least 40% in the transition metal, and in the surface coated of described lithium nickel-manganese-cobalt/cobalt oxide the ionic conductivity solid chemical compound is arranged;

    Li xM yO 2 (1) Wherein M is Ni 1-a-bMn aCo b(0.05≤

    a≤

    0.4,0.1≤

    b≤

    0.4,0.4≤

    (1-a-b)≤

    0.9), x+y is about 2 and 0.95≤

    x≤

    1.15.

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