Negative electrode and secondary battery

Negative electrode and secondary battery

  • CN 101,047,235 A
  • Filed: 03/29/2007
  • Published: 10/03/2007
  • Est. Priority Date: 03/30/2006
  • Status: Active Application
First Claim
Patent Images

1. , a kind of negative pole comprises:

  • Negative electrode collector;

    WithBe arranged on the anode active material layer on this negative electrode collector, whereinThis anode active material layer comprises the ground floor that contacts with this negative electrode collector and is formed on the second layer on this ground floor;

    These first and second layers are formed by the material with carbon element that can embed and deviate from lithium;

    The specific area of material with carbon element that forms this second layer is greater than the specific area of the material with carbon element that forms this ground floor;

    WithThe thickness of this ground floor be equivalent to this whole anode active material layer thickness 40% or bigger to 90% or littler.

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