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POROUS FILM FOR SEPARATOR, BATTERY SEPARATOR, BATTERY ELECTRODE, AND MANUFACTURING METHODS THEREFOR, AND LITHIUM SECONDARY BATTERY

  • US 20110039145A1
  • Filed: 06/09/2009
  • Published: 02/17/2011
  • Est. Priority Date: 07/04/2007
  • Status: Active Grant
First Claim
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1. A porous film for a separator comprising inorganic oxide particles and a binder for binding the inorganic oxide particles together,wherein the inorganic oxide particles include boehmite, andan amount of Na contained in the porous film is 1000 ppm or less.

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