Electrospun polyimide nanofiber-based nonwoven separators for lithium-ion batteries

被引：381
作者：
Miao, Yue-E [1 ]
Zhu, Guan-Nan [2 ,3 ]
Hou, Haoqing [4 ]
Xia, Yong-Yao [2 ,3 ]
Liu, Tianxi [1 ]
机构：
[1] Fudan Univ, Dept Macromol Sci, State Key Lab Mol Engn Polymers, Shanghai 200433, Peoples R China
[2] Fudan Univ, Dept Chem, Inst New Energy, Shanghai 200433, Peoples R China
[3] Fudan Univ, Shanghai Key Lab Mol Catalysis & Innovat Mat, Inst New Energy, Shanghai 200433, Peoples R China
[4] Jiangxi Normal Univ, Dept Chem & Chem Engn, Nanchang 330022, Peoples R China
来源：
JOURNAL OF POWER SOURCES | 2013年 / 226卷
基金：
中国国家自然科学基金;
关键词：
Polyimide; Electrospinning; Nonwoven separator; Lithium-ion battery; POLYMER ELECTROLYTES; LI; MEMBRANES; PERFORMANCES; CONVERSION; STORAGE; PVDF;
D O I：
10.1016/j.jpowsour.2012.10.027
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
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 degrees C while the commercial Celgard membrane exhibits great shrinkage at 150 degrees C and even goes melting over 167 degrees C, 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. (C) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码：82 / 86
页数：5
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