Selective modification of block copolymers as proton exchange membranes

被引：24

作者：

Yang, JE ^{[1
]}

Lee, JS ^{[1
]}

机构：

[1] GIST, Dept Mat Sci & Engn, Ctr Frontier Mat, Kwangju 500712, South Korea

来源：

ELECTROCHIMICA ACTA | 2004年 / 50卷 / 2-3期

关键词：

proton exchange membranes; electrolyte; sulfonation; block copolymer; ionic channels;

D O I：

10.1016/j.electacta.2004.03.064

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

A series of selectively sulfonated polystyrene-b-poly(ethylene-r-butylene)-b-polystyrene copolymers (SSEBS) with varying degree of sulfonation were synthesized. The morphology of SSEBS characterized by AFM and TEM showed the microphase separated nano-structures. The SSEBS formed nano-sized ionic channels by association of the sulfonate groups in the styrene blocks of SEBS. The well-ordered ionic channels are continuously linked, which resulted in enhanced proton conductivity. Proton conductivity values of SSEBS determined by membrane electrical resistance (MER) measurement was more than that of the commercially available proton exchange membranes. (C) 2004 Elsevier Ltd. All rights reserved.

引用

页码：617 / 620

页数：4

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