公开(公告)号：US06902842B2

公开(公告)日：2005-06-07

申请号：US10234673

申请日：2002-09-04

申请人： Michitaka Hidaka ,  Kazuhito Furuta ,  Masaki Shimizu ,  Akiyasu Okuno ,  Hideki Rachi

发明人： Michitaka Hidaka ,  Kazuhito Furuta ,  Masaki Shimizu ,  Akiyasu Okuno ,  Hideki Rachi

IPC分类号： H01M4/80 ,  H01M2/28 ,  H01M4/66 ,  H01M4/68 ,  H01M4/70 ,  H01M10/39

CPC分类号： H01M4/666 ,  H01M4/663 ,  H01M4/70 ,  H01M10/3909

摘要： A current collector positive electrode enabling a NaS battery to be excellent in the charge recovery characteristic and low in internal resistance is provided, which collector has a high resistance layer formed by needle-punching glass fibers with 5 to 15 μm fiber diameter into a felt substrate made of carbon fibers or graphite fibers by needle-punching from one surface of the substrate toward another surface of the substrate. The density of the glass fibers needle-punched into the substrate is gradually decreased in the direction from the above mentioned surface to the other surface of the substrate, and the deepest portions of the needle-punched glass fibers reach the depths of 85 to 100% of the substrate thickness.

摘要翻译： 提供了一种能够使NaS电池具有优异的电荷恢复特性并且内阻低的集电极正极，该集电体具有通过针刺毛毡衬底中具有5至15μm纤维直径的玻璃纤维形成的高电阻层 由碳纤维或石墨纤维通过从衬底的一个表面针刺到衬底的另一个表面。 针刺入基板的玻璃纤维的密度在从上述表面到基材的另一个表面的方向上逐渐减小，并且针刺玻璃纤维的最深部分达到85至100％的深度， 的基板厚度。