Cathode active material and lithium secondary battery containing the same

Cathode active material and lithium secondary battery containing the same

  • CN 101,223,658 A
  • Filed: 08/07/2006
  • Published: 07/16/2008
  • Est. Priority Date: 08/16/2005
  • Status: Active Application
First Claim
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1. active material of cathode that is used for lithium secondary battery, it comprises the mixture of lithium/nickel/cobalt/manganese composite oxide that lithium/mangenese spinel oxide that formula I represents and formula II represent, wherein in these two kinds of oxides at least a average grain diameter greater than 15 μ

  • m;

    Li 1+xMn 2O 4????????????????(I) Li 1+yNi bMn cCO 1-(b+c)O 2????(II) Wherein0≤

    x≤

    0.2;

    0≤

    y≤

    0.1;

    0.2≤

    b≤

    0.7;

    0.2≤

    c≤

    0.7;

    Andb+c<

    1。

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