Partially oxidized polyacrylonitrile nanofibrous membrane as a thermally stable separator for lithium ion batteries

被引：57

作者：

Lee, Jong Hwa ^{[1
]}

Manuel, James ^{[2
,3
]}

Choi, Hyunji ^{[2
,3
]}

Park, Won Ho ^{[1
]}

Ahn, Jou-Hyeon ^{[2
,3
]}

机构：

[1] Chungnam Natl Univ, Dept Adv Organ Mat & Text Syst Engn, Daejon, South Korea

[2] Gyeongsang Natl Univ, Dept Chem & Biol Engn, Jinju 660701, South Korea

[3] Gyeongsang Natl Univ, Engn Res Inst, Jinju 660701, South Korea

来源：

POLYMER | 2015年 / 68卷

基金：

新加坡国家研究基金会;

关键词：

Polyacrylonitrile; Electrospinning; Partial oxidation; ELECTROCHEMICAL PERFORMANCES; NONWOVEN SEPARATOR; HEAT-TREATMENT;

D O I：

10.1016/j.polymer.2015.04.055

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Nanofibrous membranes of polyacrylonitrile (PAN) prepared by electrospinning technique were converted to partially oxidized PAN (oxy-PAN) at 230 degrees C and at different time periods. The physical properties and electrochemical characteristics of oxy-PAN membranes were investigated for use as separator membrane in lithium ion battery (LIB). The optimized oxy-PAN membrane showed high tensile strength and thermal stability along with high electrolyte uptake and high ionic conductivity at room temperature. Impedance spectroscopic studies of oxy-PAN membranes revealed good stability and compatibility with lithium electrode and liquid electrolyte which are favorable attributes for long-term storage of lithium ion batteries. The Li/oxy-PAN/LiFePO4 cell delivered stable and excellent cycle performance. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：335 / 343

页数：9

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