期刊
JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY
卷 47, 期 2, 页码 384-391出版社
WILEY
DOI: 10.1002/pola.23153
关键词
ionomers; methanol permeability; polycondensation; poly(ether sulfones); proton conductivity; proton exchange membranes
资金
- National Science Foundation [HER-0090556]
- Department of Energy [DE-FC36-01G01086]
- UTC Fuel Cell [PO3561]
Partially disulfonated hydroquinone (HQ)-based poly(arylene ether sulfone) random copolymers were synthesized and characterized for application as proton exchange membranes. The copolymer composition was varied in the degree of disulfonation. The copolymers were characterized by H-1 NMR, Differential Scanning Calorimetry (DSC), and other analytical techniques. The copolymer with a 25% degree of disulfonation showed the best balance between water uptake and proton conductivity. The copolymers showed substantially reduced methanol permeability compared with Nafion (R) and satisfactory direct methanol fuel cell performance. The methanol selectivity improved significantly in comparison to Nafion (R) 117. At a given ionic composition, the HQ-based system showed higher water uptake and proton conductivity than the biphenol-based (BPSH-xx) poly(arylene ether sulfone)s copolymers. (C) 2008 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 47: 384-391, 2009
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