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Crosslinked anion exchange membranes with primary diamine-based crosslinkers for vanadium redox flow battery application

Title
Crosslinked anion exchange membranes with primary diamine-based crosslinkers for vanadium redox flow battery application
Author
오성근
Keywords
Anion exchange membrane; Primary amine crosslinker; Redox flow battery; Vanadium; poly(sulfone)s
Issue Date
2017-09
Publisher
ELSEVIER SCIENCE BV
Citation
JOURNAL OF POWER SOURCES, v. 363, page. 78-86
Abstract
A series of polysulfone-based crosslinked anion exchange membranes (AEMs) with primary diaminebased crosslinkers has been prepared via simple a crosslinking process as low-cost and durable membranes for vanadium redox flow batteries (VRFBs). Chloromethylated polysulfone is used as a precursor polymer for crosslinked AEM5 (CAPSU-x) with different degrees of crosslinking. Among the deVeloped AEM5, CAPSU-2.5 shows outstanding dimensional stability and anion (Cl-, SO42-, and OH-) conductivity. Moreover, CAPSU-2.5 exhibits much lower vanadium ion permeability (2.72 x 10(-8) cm(2) min(-1)) than Nafion 115 (2.88 x 10(-6) cm(2) min(-1)), which results in an excellent coulombic efficiency of 100%. The chemical and operational stabilities of the membranes have been investigated via ex situ soaking tests in 0.1 M VO2+ solution and in situ operation tests for 100 cycles, respectively. The excellent chemical, physical, and electrochemical properties of the CAPSU-2.5 membrane make it suitable for use in VRFBs. (C) 2017 Elsevier B.V. All rights reserved.
URI
https://www.sciencedirect.com/science/article/abs/pii/S0378775317309606?via%3Dihubhttps://repository.hanyang.ac.kr/handle/20.500.11754/115377
ISSN
0378-7753; 1873-2755
DOI
10.1016/j.jpowsour.2017.07.068
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > CHEMICAL ENGINEERING(화학공학과) > Articles
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