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http://dx.doi.org/10.14579/MEMBRANE_JOURNAL.2014.24.4.332

Improvement of Capacitive Deionization Performance by Coating Quaternized Poly(phenylene oxide)  

Kim, Do-Hyeong (Department of Environmental Engineering, Sangmyung University)
Kang, Moon-Sung (Department of Environmental Engineering, Sangmyung University)
Publication Information
Membrane Journal / v.24, no.4, 2014 , pp. 332-339 More about this Journal
Abstract
In this study, an anion-exchange ionomer solution was developed by employing poly(2,6-dimethyl-1,4-phenylene oxide) (PPO) as the base material for the improvement of the capacitive deionization (CDI) performances. It was found that prepared quaternized PPO (QPPO) exhibited excellent ion conductivity superior to that of a commercial anion-exchange membrane (AMX, Astom Corp., Japan) and also the electrochemical properties were shown to be comparable with each other. The CDI tests were conducted by employing the porous carbon electrode coated with the ionomer solution and the result showed the high salt removal efficiency of about 94.9%. By comparing the desalination efficiencies in conventional CDI, membrane CDI (MCDI) with a commercial anion-exchange membrane, and coated CDI (CCDI) employing the porous carbon electrode coated with QPPO, it was confirmed that CCDI shows the high salt removal performance improved by 52.1% and 18.3% compared with those of conventional CDI and MCDI, respectively.
Keywords
anion-exchange ionomer solution; poly(2,6-dimethyl-1,4-phenylene oxide); capacitive deionization; salt removal efficiency; desalination;
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Times Cited By KSCI : 1  (Citation Analysis)
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