Seo-Yoon Lee 1, Dong-Ju Lee1, Kyeong-Ho Yeon2, Woo-Gu Kim2, Moon-Sung Kang1, and Jin-Soo Park1,*
1Department of Environmental Engineering, College of Engineering, Sangmyung University, 31 Sangmyungdae-gil,
Dongnam-gu, Cheonan,Chungnam Province 330-720, Republic of Korea
2Taeyoung Engineering & Construction Co. Ltd., 10-2 Yeouido-dong, Yeongdeungpo-gu,
Seoul 150-777, Republic of Korea
In this study, the electrochemical investigation of various electrodes for reverse electrodialysis
using potassium ferrocyanide and potassium ferricyanide as a redox system was carried
out. Cyclic voltammetry was the employed method for this electrochemical study. From
the results of cyclic voltammograms for various electrode materials, i.e., Au, Vulcan supported
Pt, activated carbon, carbon nanofiber, Vulcan, the Vulcan electrode showed the lowest overpotential,
but the Pt electrode having slightly higher overpotential obtained slightly higher
anodic and cathodic current densities for the Fe(CN)6
4?/Fe(CN)6
3? redox couple. The cyclic voltammograms
for the Vulcan electrode confirmed very good electrochemical reversibility and
kinetic behavior. As a result, among the electrode materials, the Vulcan electrode is the most
promising electrode material for reverse electrodialysis.
Keyword : Reverse electrodialysis, Cyclic voltammetry, Redox couple, Vulcan, Electrode