Lithium secondary battery

Lithium secondary battery

  • CN 101,276,932 A
  • Filed: 01/25/2008
  • Published: 10/01/2008
  • Est. Priority Date: 03/27/2007
  • Status: Active Application
First Claim
Patent Images

1. lithium secondary battery is characterized in that having positive pole, the negative pole that can store/discharge lithium ion that can store/discharge lithium ion, being configured in the lithium secondary battery of barrier film between positive pole and the negative pole and electrolyte, and aforementioned electrolyte contains as solventThe cyclic carbonate of (formula 1) expression(formula 1) (in the formula, R 1, R 2, R 3, R 4Expression hydrogen, fluorine, chlorine, C 1~

  • 3Alkyl or fluorinated alkyl any) and The linear carbonate of (formula

         2) expression(formula

         2) (in the formula, R 5, R 6Expression hydrogen, fluorine, chlorine, C 1~

    3
    Alkyl or fluorinated alkyl any), and The compound of (formula

         3) expression(formula

         3) (in the formula, R 7, R 8Expression hydrogen, fluorine, chlorine, C 1~

    3
    Alkyl or fluorinated alkyl any);

    Cumulative volume with respect to aforementioned solvents, the composition ratio of the cyclic carbonate of (formula

         1) expression is that the composition ratio of the linear carbonate of 18.0~

    30.0 volume %, (formula

         2) expression is 74.0~

    81.9 volume %, the composition ratio of the compound of (formula

         3) expression is 0.1~

    1.0 volume %, and the cumulative volume of aforementioned solvents is 100 volume %.

View all claims
    ×
    ×

    Thank you for your feedback

    ×
    ×