A negative active material for lithium battery, a method of preparing the same, and a rechargeable lithium battery including the same

A negative active material for lithium battery, a method of preparing the same, and a rechargeable lithium battery including the same

  • CN 101,188,287 B
  • Filed: 11/22/2007
  • Issued: 12/24/2014
  • Est. Priority Date: 11/22/2006
  • Status: Active Grant
First Claim
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1. , for the negative active core-shell material of lithium rechargeable battery, comprising:

  • Core, it comprises can carry out reversible electrochemical oxidation and the active material of reduction, and wherein this active material is selected from crystalline carbon, amorphous carbon, Si, silica, Sn, tin oxide, ashbury metal compound, transition elements oxide, metal lithium nitride, lithium-barium oxide, and the lithium alloys comprising at least one metal being selected from Na, K, Rb, Cs, Fr, Be, Mg, Ca, Sr, Ba, Ra, Al, Fe, Sn and combination thereof;

    WithCoating layer on this core surface, this coating layer has the network structure comprising-O-M-O-and the organo-functional group being connected to M as side chain, and wherein M is selected from Si, Ti, Zr, Al and combination thereof, and this organo-functional group is tolyl,Wherein-O-M-O-key surrounds the surface of this core, and wherein this coating layer has the thickness of 20nm or less.

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