Negative electrode for lithium secondary battery and lithium secondary battery

Negative electrode for lithium secondary battery and lithium secondary battery

  • CN 101,714,631 A
  • Filed: 07/27/2006
  • Published: 05/26/2010
  • Est. Priority Date: 08/02/2005
  • Status: Active Application
First Claim
Patent Images

1. a negative electrode for lithium secondary battery possesses sheet collector body and the active material layer that supports on described collector body,Described active material layer contains most columnar-shaped particles,Described active material layer contains the compound that is selected from siliceous and oxygen, siliceous and nitrogen compound, does not form among the alloy of the metallic element M of alloy and silicon and their combination at least a kind with lithium,Described columnar-shaped particle tilts with respect to the normal direction of described collector body,Have the space between the described columnar-shaped particle, comprise the ratio of described space in interior whole spaces in the described active material layer, promptly voidage P is 10%≤

  • P≤

    70%.

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