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Nano-sized structured layered positive electrode materials to enable high energy density and high rate capability lithium batteries

  • US 20090297947A1
  • Filed: 05/22/2009
  • Published: 12/03/2009
  • Est. Priority Date: 05/30/2008
  • Status: Active Grant
First Claim
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1. A material comprisinga plurality of metal oxide secondary particles comprising primary particles,wherein;

  • an average primary particle size is about 1 nm to 500 nm;

    an average secondary particle size is about 1 μ

    m to 100 μ

    m;

    the material is a positive active material;

    and further wherein the primary particles compriseLi1+α

    (NixCoyMnz)1−

    t
    MtO2−

    d
    Rd;

    whereinM is selected from Al, Mg, Fe, Cu, Zn, Cr, Ag, Ca, Na, K, In, Ga, Ge, V, Mo, Nb, Si, Ti, Zr, or a mixture of any two or more thereof;

    R is selected from F, Cl, Br, I, H, S, N, or a mixture of any two or more thereof; and

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    z≦

    1;

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    1; and

    0≦

    d≦

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