SPEEK/PVDF/PES Composite as Alternative Proton Exchange Membrane for Vanadium Redox Flow Batteries

被引：24
作者：
Fu, Zhimin [1 ]
Liu, Jinying [1 ]
Liu, Qifeng [1 ]
机构：
[1] Inner Mongolia Univ, Coll Environm & Resources, Hohhot 010021, Peoples R China
来源：
JOURNAL OF ELECTRONIC MATERIALS | 2016年 / 45卷 / 01期
关键词：
Sulfonated poly(ether ether ketone); poly(vinylidene fluoride); poly(ether sulfone); vanadium redox flow battery; ion exchange membrane; CELL; TRANSPORT;
D O I：
10.1007/s11664-015-4171-0
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A membrane consisting of a blend of sulfonated poly(ether ether ketone) (SPEEK), poly(vinylidene fluoride) (PVDF), and poly(ether sulfone) (PES) has been fabricated and used as an ion exchange membrane for application in vanadium redox flow batteries (VRBs). The vanadium ion permeability of the SPEEK/PVDF/PES membrane was one order of magnitude lower than that of Nafion 117 membrane. The low-cost composite membrane exhibited better performance than Nafion 117 membrane at the same operating condition. A VRB single cell with SPEEK/PVDF/PES membrane showed significantly lower capacity loss, higher coulombic efficiency (> 95%), and higher energy efficiency (> 82%) compared with Nafion 117 membrane. In the self-discharge test, the duration of the cell with the SPEEK/PVDF/PES membrane was nearly two times longer than that with Nafion 117 membrane. Considering these good properties and its low cost, SPEEK/PVDF/PES membrane is expected to have excellent commercial prospects as an ion exchange membrane for VRB systems.
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收藏
页码：666 / 671
页数：6
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