Battery separator, method for manufacture thereof, and lithium secondary battery

Battery separator, method for manufacture thereof, and lithium secondary battery

  • CN 103,165,842 A
  • Filed: 09/07/2007
  • Published: 06/19/2013
  • Est. Priority Date: 09/07/2006
  • Status: Active Application
First Claim
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1. a battery separator, is characterized in that, it is to possess the multiple aperture plasma membrane of hot-melt resin and the battery separator of the insulating barrier that the inorganic particles of insulating properties bonding formed by adhesive,As described hot-melt resin, contain select free polyethylene, from the construction unit of ethene, be at least one in the group that forms of copolymerization polyolefin, polypropylene and polyolefin derivative thing more than 85 % by mole,Described insulating barrier integrally is layered on described multiple aperture plasma membrane,The thickness of described dividing plate is below the above 30 μ

  • m of 5 μ

    m,The water content of per unit volume while under the atmosphere of 20 ℃

    of relative humidity 60%, keeping 24 hours, that calculated by the apparent volume of the emptying aperture that comprises dividing plate inside is below 1mg/cm3.

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