169. Electrospun polyimide nanofiber-based nonwoven separators for Lithium-ion batteries.
writer：Yue-E Miao, Guan-Nan Zhu, Haoqing Hou, Yong-Yao Xia*, Tianxi Liu*
keywords：Polyimide, Electrospinning, Nonwoven separator, Lithium-ion battery
source：期刊
specific source：Journal of Power Sources, 2013, 226, 82-86.
Issue time：2012年
Polyimide (PI) nanofiber-based nonwovens have been fabricated via electrospinning for the separators of lithium-ion batteries (LIBs). Differential scanning calorimetry (DSC), thermogravimetric analysis (TGA) and hot oven tests show that the PI nanofiber-based nonwovens are thermally stable at a high temperature of 500 oC while the commercial Celgard membrane exhibits great shrinkage at 150 oC and even goes melting over 167 oC, indicating a superior thermal stability of PI nanofiber-based nonwovens than that of the Celgard membrane. Moreover, the PI nanofiber-based nonwovens exhibit better wettability for the polar electrolyte compared to the Celgard membrane. The PI nanofiber-based nonwoven separators are also evaluated to have higher capacity, lower resistance and higher rate capability compared to the Celgard membrane separator, which proves that they are ideal candidates for separators of high-performance rechargeable LIBs.