Nafion-based composite membrane with a permselective layered silicate layer for vanadium redox flow battery

被引：47
作者：
Kim, Jihoon [1 ]
Jeon, Jae-Deok [2 ]
Kwak, Seung-Yeop [1 ]
机构：
[1] Seoul Natl Univ, Dept Mat Sci & Engn, Seoul 151744, South Korea
[2] Korea Inst Energy Res, Energy Storage Dept, Taejon 305343, South Korea
来源：
ELECTROCHEMISTRY COMMUNICATIONS | 2014年 / 38卷
基金：
新加坡国家研究基金会;
关键词：
Microporous layered silicate; AMH-3; Vanadium redox flow battery; Nafion; Vanadium crossover; NANOCOMPOSITE MEMBRANES; CROSSOVER; AMH-3; CELL;
D O I：
10.1016/j.elecom.2013.11.002
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
Layered silicate AMH-3 forms a 3D ordered microporous structure and is potentially useful as a permselective barrier. Nation-based composite membrane containing delaminated AMH-3 (D-AMH-3) layer was prepared by solution casting and hot pressing. The membrane structure was analyzed by FE-SEM and EDS, revealing a sandwich-type structure that included double Nation outer layers and a central D-AMH-3 layer. The Nafion/D-AMH-3 membrane was employed as an ion exchange membrane for VRB application, and the vanadium permeability and single cell performance were evaluated. The Nafion/D-AMH-3 membrane exhibited a lower VO2+ permeability compared to N117, resulting in higher Coulombic efficiency and lower capacity loss per cycle. The results indicated that D-AMH-3 layer is potentially suitable as a permselective barrier for reducing vanadium crossover and improving cell performance. (C) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码：68 / 70
页数：3
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