Novel sulfonated poly (ether ether keton)/polyetherimide acid-base blend membranes for vanadium redox flow battery applications

被引：112
作者：
Liu, Shuai [1 ,2 ]
Wang, Lihua [1 ]
Ding, Yue [3 ]
Liu, Biqian [1 ]
Han, Xutong [3 ]
Song, Yanlin [1 ]
机构：
[1] Chinese Acad Sci, Inst Chem, Key Lab Green Printing, Beijing 100190, Peoples R China
[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
[3] Tianjin Polytech Univ, Sch Mat Sci & Engn, Tianjin 300387, Peoples R China
来源：
ELECTROCHIMICA ACTA | 2014年 / 130卷
关键词：
SPEEK/PEI; Acid-base; Proton conductivity; Vanadium ion permeability; METHANOL FUEL-CELLS; PROTON-EXCHANGE MEMBRANES; POLY(ETHER KETONE KETONE); IONOMER MEMBRANES; COMPOSITE MEMBRANES; POLYSULFONE; HYDROGEN;
D O I：
10.1016/j.electacta.2014.02.144
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
Novel acid-base blend membranes composed of sulfonated poly (ether ether ketone) (SPEEK) and polyetherimide (PEI) were prepared for vanadium redox flow battery (VRB). The blend membranes were characterized by Fourier transform infrared spectroscopy (FT-IR) and scanning electronic microscopy (SEM). The ion exchange capacity (IEC), proton conductivity, water uptake, vanadium ion permeability and mechanical properties were measured. As a result, the acid-base blend membranes exhibit higher water uptake, IEC and lower vanadium ion permeability compared to Nafion117 membranes and all these properties decrease with the increase of PEI. In VRB single cell test, the VRB with blend membranes shows lower charge capacity loss, higher coulombic efficiency (CE) and energy efficiency (EE) than Nafion117 membrane. Furthermore, the acid-base blend membranes present stable performance up to 50 cycles with no significant decline in CE and EE. All experimental results indicate that the SPEEK/PEI (SIP) acid-base blend membranes show promising prospects for VRB. (C) 2014 Elsevier Ltd. All rights reserved.
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收藏
页码：90 / 96
页数：7
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