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Lithium-ion batteries with intrinsic pulse overcharge protection

  • US 8,367,253 B2
  • Filed: 02/02/2006
  • Issued: 02/05/2013
  • Est. Priority Date: 02/02/2006
  • Status: Active Grant
First Claim
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1. An electrochemical device comprising:

  • a cathode comprising at least one primary positive material and at least one secondary positive material;

    an anode; and

    a non-aqueous electrolyte comprising a redox shuttle additive;

    whereinthe redox potential of the redox shuttle additive is greater than the redox potential of the primary positive material;

    the redox potential of the redox shuttle additive is lower than the redox potential of the secondary positive material; and

    the redox shuttle additive is stable at least up to the redox potential of the secondary positive material.

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