期刊
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
卷 38, 期 26, 页码 11321-11330出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2013.06.053
关键词
Proton exchange membrane; Ionic liquid; Sulfonated polyimide; Conductivity
资金
- National Science Council of Taiwan
The aim of this study was to utilize ionic liquids (ILs) in preparation of modified sulfonated polyimide (SPI) composite membranes to substantially increase the conductivity of proton exchange membranes (PEMs). Protic ILs used included 1-vinylimidazolium trifluoromethanesulfonate [ImVH][OTf] and 1-methyl-imidazolium trifluoromethanesulfonate [ImMH][OTf]. SPIs are synthesized from diamine, 2,2-bis[4-(4-amino-phenoxy)phenyl]propane (BAPP), sulfonated diamine, 4,4'-diamino diphenyl ether-2,2'-disulfonic acid (ODADS), and an aromatic anhydride, ODPA (4,4'-oxy diphthalic anhydride). ODADS improves conductivity, while BAPP enhances the mechanical and thermal properties of SPIs. We have prepared SPI/IL composite PEM using 50 wt.% [ImVH] [OTf] with a high conductivity of 3-6 mS/cm at 120 degrees C and anhydrous condition depending on the ODADS content. [ImVH] [OTf] offered better conductivity, which can be attributed to its chemical structure that has a vinyl group attached to an imidazolium ring to provide lower melting temperature and lattice energy, thereby increasing conductivity. Copyright (C) 2013, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. 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