×

Non-aqueous electrolyte and lithium secondary battery comprising same

  • US 7,968,234 B2
  • Filed: 05/18/2010
  • Issued: 06/28/2011
  • Est. Priority Date: 04/03/2003
  • Status: Active Grant
First Claim
Patent Images

1. A lithium secondary battery comprising:

  • a positive electrode including a material that reversibly intercalates/deintercalates lithium ions;

    a negative electrode comprising a material selected from the group consisting of lithium metal, a lithium-containing alloy, a material that reversibly forms a lithium-containing compound, a material that reversibly intercalates/deintercalates lithium ions, and combinations thereof; and

    a non-aqueous electrolyte comprising;

    a lithium salt;

    an organic solvent; and

    an additive compound selected from the group consisting of bisphenol A, 2,3-dichloro-1,4-naphthoquinone, and combinations thereof that initiates decomposition at from 4V to 5V and shows a constant current maintenance plateau region of at least 0.5V at measurement of LSV (linear sweep voltammetry), wherein the additive compound is provided in an amount from 0.01 to 10 wt% based on the total weight of the electrolyte.

View all claims
  • 3 Assignments
Timeline View
Assignment View
    ×
    ×