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Lithium secondary battery

  • US 5,714,280 A
  • Filed: 10/31/1995
  • Issued: 02/03/1998
  • Est. Priority Date: 11/09/1994
  • Status: Expired due to Term
First Claim
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1. A lithium secondary battery comprising a negative electrode made of at least one kind of active materials selected from the group consisting of metallic lithium, lithium alloys and a carbon material capable of electro-chemically occluding and releasing lithium ions, a positive electrode made of at least one kind of materials capable of electro-chemically occluding and releasing lithium ions and an organic electrolyte prepared by dissolving a solute comprising at least one kind of lithium salts in a mixture solvent containing at least one kind of cyclic esters used as a first solvent and at least one kind of chain esters used as a second solvent, the improvement being that the first solvent comprises at least 4-trifluoromethyl-ethylene carbonate.

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