Lithium manganate powder for nonaqueous electrolyte secondary battery, method for producing same, and nonaqueous electrolyte secondary battery

Lithium manganate powder for nonaqueous electrolyte secondary battery, method for producing same, and nonaqueous electrolyte secondary battery

  • CN 102,171,862 A
  • Filed: 09/29/2009
  • Published: 08/31/2011
  • Est. Priority Date: 10/01/2008
  • Status: Active Application
First Claim
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1. lithium manganate particle powder is characterized in that:

  • In the lithium manganate particle powder of Chemical formula 1, sulfur content is 1~

    100ppm, average aggregate particle size D 50Be 1~

    15 μ

    m, and in this lithium manganate particle powder was measured as the battery of the secondary cell of positive active material, the high temperature circulation conservation rate was more than 92%, the capacity restoration rate is more than 95%, Chemical formula 1;

    Li 1+xMn 2-x-yY yO 4+zA At least a among Y=Al, the Mg,The A=fusing point is the sintering aid element below 850 ℃

    ,0.03≤

    x≤

    0.15,0≤

    y≤

    0.20, z is 0~

    2.5mol% with respect to Mn.

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