期刊
JOURNAL OF POWER SOURCES
卷 196, 期 10, 页码 4445-4450出版社
ELSEVIER
DOI: 10.1016/j.jpowsour.2011.01.081
关键词
Bromomethylated poly(arylene ether sulfone)s; Anion exchange membrane; Multi-block copolymer
资金
- National Basic Research Program of China [2009CB623401]
- National Science Foundation of China [50825302, 20802071, 51021003, 21074133]
A series of multi-block poly(arylene ether sulfone)s are synthesized via the copolymerization of bis(4-hydroxyphenol) sulfone, 3,3', 5,5'-tetramethylbiphenol and 4,4'-difluorodiphenyl sulfone. The resulting multi-block copolymers are brominated by using N-bromosuccinmide (NBS) as bromination reagent. The bromomethylated copolymer is solution cast to form clear, creasable films, and subsequent soaking of these films in aqueous trimethylamine to give benzyltrimethylammonium groups. The anion exchange membranes obtained by the solution hydroxide exchange with aqueous sodium hydroxide show varying degrees of ionic conductivity depending on their ion exchange capacity. The highest hydroxide conductivity 0.029 S cm(-1) is achieved with the QBPES-40 membrane having IEC value of 1.62 mequiv g(-1) at room temperature and 100% RH. The obtained anion exchange membranes also have good mechanical properties and dimensional stability, which greatly facilitates the preparation of a MEA and the cell operation. (C) 2011 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据