Amphiphilic block copolymer membrane for vanadium redox flow battery

被引：30
作者：
Wang, Fei [1 ]
Sylvia, James M. [1 ]
Jacob, Monsy M. [1 ]
Peramunage, Dharmasena [1 ]
机构：
[1] EIC Labs Inc, Norwood, MA 02062 USA
来源：
JOURNAL OF POWER SOURCES | 2013年 / 242卷
关键词：
Amphiphilic block copolymer; Proton exchange membrane; Vanadium redox flow battery; Energy storage; PROTON-EXCHANGE MEMBRANES; ETHER KETONE) MEMBRANES; FUEL-CELL APPLICATIONS; IONS;
D O I：
10.1016/j.jpowsour.2013.05.102
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
An amphiphilic block copolymer comprised of hydrophobic polyaryletherketone (PAEK) and hydrophilic sulfonated polyaryletherketone (SPAEK) blocks has been synthesized and characterized. A membrane prepared from the block copolymer is used as the separator in a single cell vanadium redox flow battery (VRB). The proton conductivity, mechanical property, VO2+ permeability and single VRB cell performance of this block copolymer membrane are investigated and compared to Nafion (TM) 117. The block copolymer membrane showed significantly improved vanadium ion selectivity, higher mechanical strength and lower conductivity than Nafion (TM) 117. The VRB containing the block copolymer membrane exhibits higher coulombic efficiency and similar energy efficiency compared to a VRB using Nafion (TM) 117. The better vanadium ion selectivity of the block copolymer membrane has led to a much smaller capacity loss during 50 charge-discharge cycles for the VRB. (C) 2013 Published by Elsevier B.V.
引用
收藏
页码：575 / 580
页数：6
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