Lithium gel polyelectrolytes based on crosslinked maleic anhydride-styrene copolymer

被引:41
作者
Florjanczyk, Z
Bzducha, W
Langwald, N
Dygas, JR
Krok, F
Misztal-Faraj, B
机构
[1] Warsaw Univ Technol, Fac Chem, PL-00664 Warsaw, Poland
[2] Warsaw Univ Technol, Fac Phys, PL-00664 Warsaw, Poland
关键词
lithium polyelectrolytes; organic gels; ionic conductivity; interface passivation;
D O I
10.1016/S0013-4686(00)00475-8
中图分类号
O646 [电化学、电解、磁化学];
学科分类号
081704 ;
摘要
The effect of various solvents, lithium salts and Lewis acids on the conductivity of crosslinked lithium carboxylates resulting from the modification of maleic anhydride copolymers with styrene has been studied. It was found that in the presence of BF3 and polar solvents such as dialkyl sulfoxides or propylene carbonate polyelectrolytes can be obtained in the form of dimensionally stable membranes of ambient temperature conductivity of approximate to 10(-3)-10(-4) S.cm(-1). IR studies demonstrate a strong interaction between BF3 and carboxylic anions leading to a greater mobility of Li+ cations. The passivation phenomena at the lithium-gel polyelectrolyte interface for selected systems were examined by means of the impedance spectroscopy. It was found that the passivation layers could be formed in these systems both on the electrode and the polymeric membranes. The passivation process is strongly inhibited in the systems containing BF3. (C) 2000 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:3563 / 3571
页数:9
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