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NONAQUEOUS SECONDARY BATTERY

  • US 20110183217A1
  • Filed: 12/13/2010
  • Published: 07/28/2011
  • Est. Priority Date: 01/27/2010
  • Status: Active Grant
First Claim
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1. A nonaqueous secondary battery comprising:

  • a positive electrode plate formed with a positive electrode mixture layer having a lithium composite oxide as a positive electrode active material;

    a negative electrode plate;

    a separator; and

    a nonaqueous electrolyte, the positive electrode active material having an average particlediameter of 4.5 to 15.5 μ

    m and a specific surface area of 0.13 to 0.80 m2/g, the positive electrode mixture layer containing at least one of a silane coupling agent and a coupling agent represented by General Formula (I) at a content of 0.003% by mass or more and 5% by mass or less with respect to the mass of the positive electrode active material, andthe nonaqueous electrolyte containing a fluorinated cyclic carbonate esters represented by General Formula (II) at a content of 0.3% by mass or more with respect to the total mass of the nonaqueous electrolyte;

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