公开(公告)号：US20110171535A1

公开(公告)日：2011-07-14

申请号：US13063597

申请日：2009-09-11

申请人： Hiroshi Ohinshi ,  Te Hyon Cho ,  Yuka Kondo ,  Yoshikazu Miyata ,  Tatsuo Nakamura ,  Hiroaki Yamazaki ,  Masanao Tanaka

发明人： Hiroshi Ohinshi ,  Te Hyon Cho ,  Yuka Kondo ,  Yoshikazu Miyata ,  Tatsuo Nakamura ,  Hiroaki Yamazaki ,  Masanao Tanaka

IPC分类号： H01M2/16 ,  B05D5/00 ,  B05D3/00 ,  B82Y30/00

CPC分类号： H01M10/0562 ,  H01M2/1646

摘要： Disclosed are a separator for lithium ion secondary batteries, having an inorganic layer formed from inorganic particles, characterized in that the inorganic particles have a particle diameter distribution in which the 50% cumulative particle diameter D50 is in the range of 100 nm to 500 nm, the 10% cumulative particle diameter D10 is 0.5D50 or more, and the 90% cumulative particle diameter D90 is 2D50 or less; a method for manufacturing the separator; and a lithium ion secondary battery using the separator. When the separator is used, there can be produced a lithium ion secondary battery in which a short circuit caused by contraction or melting can be definitely prevented, as well as the current density applied to the electrodes during charging and discharging is uniform so that charging and discharging can be efficiently achieved.

摘要翻译： 公开了一种锂离子二次电池用隔膜，其具有由无机粒子形成的无机层，其特征在于，所述无机粒子的粒径分布为50％的累积粒径D50为100nm〜500nm的范围， 10％的累积粒径D10为0.5D50以上，90％的累积粒径D90为2D50以下， 一种制造隔膜的方法; 以及使用该隔膜的锂离子二次电池。 当使用隔板时，可以产生可以明显地防止由收缩或熔化引起的短路的锂离子二次电池，以及在充放电期间施加到电极的电流密度是均匀的， 可以有效地实现放电。