Lithium secondary battery

Lithium secondary battery

  • CN 102,272,999 A
  • Filed: 08/10/2010
  • Published: 12/07/2011
  • Est. Priority Date: 08/10/2009
  • Status: Active Application
First Claim
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1. lithium secondary battery, it comprises:

  • positive pole, negative pole is inserted into the barrier film between described positive pole and the described negative pole, and by lithium salts being dissolved in the nonaqueous electrolytic solution that obtains in the nonaqueous solvents, wherein said barrier film comprises;

    Porous substrate with hole;

    WithThe porous coating of inorganic particulate and binder polymer is gone up and is had at least one surface that is positioned at described porous substrate, described inorganic particulate interconnects by described binder polymer and is fixing, described porous coating has by the interstitial volume between the described inorganic particulate hole that forms thereinThe high viscosity nonaqueous solvents of wherein said nonaqueous solvents under 25 ℃

    , having the above viscosity of 1.4cP.

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