Positive electrode active material and battery

Positive electrode active material and battery

  • CN 101,138,111 A
  • Filed: 03/08/2006
  • Published: 03/05/2008
  • Est. Priority Date: 03/09/2005
  • Status: Active Application
First Claim
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1. positive electrode active materials comprises:

  • The lithium cobalt composite oxide that comprises lithium (Li), cobalt (Co), first element and second element,Wherein this first element is to be selected from least a of aluminium (Al), chromium (Cr), vanadium (V), manganese (Mn) and iron (Fe),This second element is to be selected from least a of magnesium (Mg) and calcium (Ca),In this lithium cobalt composite oxide, in the scope of 0.9≤

    x<

    1,0.001≤

    y≤

    0.05 and 0.001≤

    z≤

    0.05, condition is that the composition of cobalt is x to the mol ratio of cobalt, first element and second element respectively, and the composition of first element is y, with the composition of second element be zThis positive electrode active materials further comprise zirconium (Zr) as the accessory constituent element andIn the ratio (Zr/Co) of cobalt in zirconium and the lithium cobalt composite oxide, the content of zirconium comprises end points in 0.01 mole of %-10 mole % scope.

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