| 摘要 |
<p>The present invention relates to a secondary-battery separator having excellent shutdown functionality and thermal stability. For the secondary-battery separator, a meta-aramid nanoweb formed by electro-spinning a meta-aramid polymer solution is laminated on one side or on both sides of a poly-olefin nanoweb. The meta-aramid nanoweb can be fabricated through electro-spinning, has an average fiber diameter of 50-500 nm, and has a weight per unit area of 2-10 g/m^2. The meta-aramid polymer solution is electro-spun on the the poly-olefin nanoweb, and has a polymer weight ratio of 5.0-13.5 wt%. A neutralizer used for producing the meta-aramid polymer solution is sodium hydroxide.</p> |
