Preparation of PVDF/PEO-PPO-PEO blend microporous membranes for lithium ion batteries via thermally induced phase separation process

被引：130

作者：

Cui, Zhen-Yu ^{[1
,2
]}

Xu, You-Yi ^{[1
]}

Zhu, Li-Ping ^{[1
]}

Wang, Jian-Yu ^{[1
]}

Xi, Zhen-Yu ^{[1
]}

Zhu, Bao-Ku ^{[1
]}

机构：

[1] Zhejiang Univ, Dept Polymer Sci & Engn, Hangzhou 310027, Peoples R China

[2] Liaoning Tech Univ, Coll Sci, Fuxin 123000, Peoples R China

来源：

JOURNAL OF MEMBRANE SCIENCE | 2008年 / 325卷 / 02期

关键词：

Blend; Microporous membrane; Thermally induced phase separation; Lithium ion batteries; Polymer electrolyte;

D O I：

10.1016/j.memsci.2008.09.022

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Microporous poly(vinylidene fluoride)/polyethylene oxide-co-polypropylene oxide-co-polyethylene oxide (PVDF/PEO-PPO-PEO, or PVDF/F127) blend membranes were prepared via thermally induced phase separation (TIPS) process using sulfolane as the diluent. Then they were soaked in a liquid electrolyte to form polymer electrolytes. The effects of F127 weight fraction on the morphology, crystallinity and porosity of the blend membranes were studied. It was found that both electrolyte uptake of blend membranes and ionic conductivity of corresponding polymer electrolytes increased with the increase of F127 weight fraction. The maximum ionic conductivity was found to reach 2.94 +/- 0.02 x 10(-3) S/cm at 20 degrees C. Electrochemical stability window was stable up to 4.7 V (vs. Li+/Li). The testing results indicated that the PVDFIF127 blend membranes prepared via TIPS process can be used as the polymer microporous matrices of polymer electrolytes for lithium ion batteries. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：957 / 963

页数：7

共 22 条

[1]

Adamson A.W., 1990, PHYS CHEM SURFACE, Vfifth

[2]

CAO JH, 2005, THESIS ZHEJIANG U PR, P92

[3] Structure and ionic conductivity of porous polymer electrolytes based on PVDF-HFP copolymer membranes [J].

Cao, Jian-Hua ;

Zhu, Bao-Ku ;

Xu, You-Yi .

JOURNAL OF MEMBRANE SCIENCE, 2006, 281 (1-2) :446-453

[4] Microporous PVdF-HFP based gel polymer electrolytes reinforced by PEGDMA network [J].

Cheng, CL ;

Wan, CC ;

Wang, YY .

ELECTROCHEMISTRY COMMUNICATIONS, 2004, 6 (06) :531-535

[5] Preparation of porous PVdF membrane via thermally induced phase separation using sulfolane [J].

Cui, Zhen-Yu ;

Du, Chun-Hui ;

Xu, You-Yi ;

Ji, Gen-Liang ;

Zhu, Bao-Ku .

JOURNAL OF APPLIED POLYMER SCIENCE, 2008, 108 (01) :272-280

[6] Poly(vinylidene fluoride) crystallization behavior and membrane structure formation via thermally induced phase separation with benzophenone diluent [J].

Gu, Minghao ;

Zhang, Jun ;

Xia, Ying ;

Wang, Xiaolin .

JOURNAL OF MACROMOLECULAR SCIENCE PART B-PHYSICS, 2008, 47 (01) :180-191

[7] Formation of poly(vinylidene fluoride) (PVDF) membranes via thermally induced phase separation [J].

Gu, Minghao ;

Zhang, Jun ;

Wang, Xiaolin ;

Tao, Haijun ;

Ge, Litian .

DESALINATION, 2006, 192 (1-3) :160-167

[8]

GUO BK, 2002, LITHIUM ION BATTERY, P239

[9] Mechanical properties and ionic conductivities of plasticized polymer electrolytes based on ABS/PMMA blends [J].

Hou, XP ;

Siow, KS .

POLYMER, 2000, 41 (24) :8689-8696

[10] PVDF porous matrix with controlled microstructure prepared by TIPS process as polymer electrolyte for lithium ion battery [J].

Ji, Gen-Liang ;

Zhu, Bao-Ku ;

Cui, Zhen-Yu ;

Zhang, Chun-Fang ;

Xu, You-Yi .

POLYMER, 2007, 48 (21) :6415-6425

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