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Composite electrode for a lithium battery

  • US 5,582,935 A
  • Filed: 09/28/1995
  • Issued: 12/10/1996
  • Est. Priority Date: 09/28/1995
  • Status: Expired due to Term
First Claim
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1. A composite positive electrode for utilization in a rechargeable lithium battery, having a metallic current collector and a transition metal oxide containing positive electrode in contact with the metallic current collector, comprising:

  • i) a metallic current collector sheet, bearing at least one oxidizable metal,ii) a mixed oxide interface layer bonded to a major face of said metallic current collector sheet, said mixed oxide interface layer comprising an oxide of said oxidizable metal in said metallic current collector sheet and a first oxide of a transition metal, said transition metal being selected from the group consisting of manganese, cobalt, nickel, vanadium, tungsten and alloys thereof,iii) a layer of said first oxide of said transition metal overlain and bonded to said mixed oxide interface layer, andiv) a positive electrode layer comprising a second oxide of said transition metal, said second oxide of said transition metal oxide being capable of incorporating lithium ions in its structure;

    wherein said mixed oxide interface layer and said layer of said first oxide of said transition metal form a chemical and physical continuum between said metallic current collector sheet and said positive electrode layer.

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