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Lithium-ion battery

  • US 7,931,987 B2
  • Filed: 05/27/2010
  • Issued: 04/26/2011
  • Est. Priority Date: 10/29/2004
  • Status: Active Grant
First Claim
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1. A lithium-ion battery comprising:

  • a positive electrode comprising a current collector and a first active material, the first active material comprising LiCoO2; and

    a negative electrode comprising a current collector, a second active material, and a third active material, wherein the second active material comprises a lithium titanate material and the third active material is V2O5;

    wherein the third active material exhibits charging and discharging capacity below a corrosion potential of the current collector of the negative electrode and above a decomposition potential of the first active material.

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