Thermal, electrical and mechanical properties of plasticized polymer electrolytes based on PEO/P(VDF-HFP) blends

被引:136
作者
Fan, LZ [1 ]
Dang, ZM [1 ]
Nan, CW [1 ]
Li, M [1 ]
机构
[1] Tsing Hua Univ, Dept Mat Sci & Engn, Beijing 100084, Peoples R China
基金
美国国家航空航天局;
关键词
polymer electrolytes; P(VDF-HFP); PEO; ionic conductivity;
D O I
10.1016/S0013-4686(02)00603-5
中图分类号
O646 [电化学、电解、磁化学];
学科分类号
081704 ;
摘要
The polymer electrolytes composed of a blend of poly(ethylene oxide) (PEO) and poly(vinylidene fluoride-co-hexafluoropropylene) (P(VDF-HFP)) as a host polymer, mixture of ethylene carbonate (EC) and propylene carbonate (PC) as a plasticizer, and LiClO4 as a salt were prepared by a solution casting technique. SEM micrographs show that P(VDF-HFP) is very compatible with PEO. The ionic conductivity of the electrolytes increases with increasing plasticizer content, while the mechanical properties become obviously worse. By addition of a certain content of PEO in P(VDF-HFP) matrix. a good compromise between high ionic conductivity and mechanical stability can be obtained. (C) 2002 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:205 / 209
页数:5
相关论文
共 31 条
[1]   Gel electrolytes prepared from oligo(ethylene glycol)dimethacrylate:: glass transition, conductivity and Li+-coordination [J].
Abbrent, S ;
Lindgren, J ;
Tegenfeldt, J ;
Wendsjo, A .
ELECTROCHIMICA ACTA, 1998, 43 (10-11) :1185-1191
[2]   Ionic conduction in PEO-PAN blend polymer electrolytes [J].
Choi, BK ;
Kim, YW ;
Shin, HK .
ELECTROCHIMICA ACTA, 2000, 45 (8-9) :1371-1374
[3]   Preparation and electrochemcial characteristics of plasticized polymer electrolytes based upon a P(VdF-co-HFP)/PVAc blend [J].
Choi, NS ;
Lee, YG ;
Park, JK ;
Ko, JM .
ELECTROCHIMICA ACTA, 2001, 46 (10-11) :1581-1586
[4]   Nanocomposite polymer electrolytes for lithium batteries [J].
Croce, F ;
Appetecchi, GB ;
Persi, L ;
Scrosati, B .
NATURE, 1998, 394 (6692) :456-458
[5]   Physical and chemical properties of nanocomposite polymer electrolytes [J].
Croce, F ;
Curini, R ;
Martinelli, A ;
Persi, L ;
Ronci, F ;
Scrosati, B ;
Caminiti, R .
JOURNAL OF PHYSICAL CHEMISTRY B, 1999, 103 (48) :10632-10638
[6]   Effect of modified montmorillonites on the ionic conductivity of (PEO)16LiClO4 electrolytes [J].
Fan, LZ ;
Nan, CW ;
Dang, ZM .
ELECTROCHIMICA ACTA, 2002, 47 (21) :3541-3544
[7]   COMPLEXES OF ALKALI-METAL IONS WITH POLY(ETHYLENE OXIDE) [J].
FENTON, DE ;
PARKER, JM ;
WRIGHT, PV .
POLYMER, 1973, 14 (11) :589-589
[8]  
Gozdz A S, 1994, [No title captured], Patent No. [5. 296. 138, 5296138]
[9]  
Gray F.M., 1997, POLYM ELECTROLYTES
[10]  
Gray F.M., 1991, SOLID POLYM ELECTROL