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Durability of Cation Exchange Membrane Containing Psf (polysulfone) in the All-vanadium Redox Flow Battery  

Kim, Joeng-Geun (Industrial energy efficiency center, KIER)
Kim, Jae-Chul (Dep. Green Energy, Hoseo University)
Ryu, Cheol-Hwi (Dep. Green Energy, Hoseo University)
Hwang, Gab-Jin (Dep. Green Energy, Hoseo University)
Publication Information
Membrane Journal / v.21, no.2, 2011 , pp. 141-147 More about this Journal
Abstract
The cation exchange membrane using TPA (tungstophosphoric acid) and the block co-polymer of polysulfone and polyphenylenesulfidesulfone was prepared for a separator of all-vanadium redox flow battery. The membrane resistance of the prepared cation exchange membrane in 1mol/L $H_2SO_4$ aqueous solution was measured. The membrane resistance of the prepared Psf-PPSS and Psf-TPA-PPSS cation exchange membrane was about $0.94{\Omega}{\cdot}cm^2$. Electrochemical property of all-vanadium redox flow battery using the prepared cation exchange membrane was measured. The measured charge-discharge cell resistance of V-RFB at 4 A decreased in the order; Nafion117 < Psf-TPA-PPSS < Psf-PPSS. The durability of membrane was earried out by soaking it in $VO_2{^+}$ solution and evaluated by measuring the charge-discharge cell resistance of V-RFB with an increase of soaking time. The prepared Psf-PPSS cation exchange membrane had high durability and Psf-TPA-PPSS cation exchange membrane had almost same durability compared with Nafion117.
Keywords
redox-flow battery; vanadium; separator; ion exchange membrane; durability;
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
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