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    • 56. 发明授权
    • Methods of making single-layer lithium ion battery separators having nanofiber and microfiber components
    • 制造具有纳米纤维和超细纤维成分的单层锂离子电池隔膜的方法
    • US08936878B2
    • 2015-01-20
    • US13682630
    • 2012-11-20
    • Brian G. Morin
    • Brian G. Morin
    • H01M2/14H01M2/16
    • H01M2/145B01D67/0004H01G11/52H01M2/1606H01M2/162H01M2/1666H01M10/052Y02E60/13Y02T10/7022
    • An insulating (nonconductive) microporous polymeric battery separator comprised of a single layer of enmeshed microfibers and nanofibers is provided. Such a separator accords the ability to attune the porosity and pore size to any desired level through a single nonwoven fabric. Through a proper selection of materials as well as production processes, the resultant battery separator exhibits isotropic strengths, low shrinkage, high wettability levels, and pore sizes related directly to layer thickness. The overall production method is highly efficient and yields a combination of polymeric nanofibers within a polymeric microfiber matrix and/or onto such a substrate through high shear processing that is cost effective as well. The separator, a battery including such a separator, the method of manufacturing such a separator, and the method of utilizing such a separator within a battery device, are all encompassed within this invention.
    • 提供由单层嵌入的微纤维和纳米纤维构成的绝缘(非导电)微孔聚合物电池隔膜。 这种分离器符合通过单一无纺织物将孔隙率和孔径调节到任何所需水平的能力。 通过适当的材料选择和生产工艺,所得的电池隔膜具有各向同性的强度,低收缩率,高润湿性水平和与层厚度直接相关的孔径。 总体生产方法是高效的,并且通过高剪切加工产生聚合物超细纤维基质内的聚合物纳米纤维和/或在这种基材上的组合,这也是成本有效的。 分离器,包括这种分离器的电池,这种隔板的制造方法以及在电池装置中利用这种隔膜的方法都包括在本发明中。