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http://dx.doi.org/10.7316/KHNES.2016.27.4.372

Surface Treatment with Alkali Solution of Carbon Felt for Vanadium Redox Flow Battery  

KIM, SUNHOE (Department of New Energy & Resource Engineering, Sangji Univ.)
LEE, KEON JOO (Department of Environmental Engineering, Sangji Univ.)
Publication Information
Journal of Hydrogen and New Energy / v.27, no.4, 2016 , pp. 372-377 More about this Journal
Abstract
The carbon felt used as the electrode of vanadium redox flow battery (VRFB) requires imprived electrochemical activity for better battery performance and efficiencies. Many efforts have been tried to improve electrochemical activity of the carbon felt as electrodes. In this study the alkali solution, KOH, is applied on surface treatment of the carbon felt electrode. The carbon felts were treated with KOH under room temperature and $80^{\circ}C$. The isopropyl alcohol was applied to improve wettability of the carbon felt during KOH treatment. The KOH treated carbon felt was analyzed by using the X-ray photoelectron spectroscopy (XPS). The XPS analysis of carbon felt electrode revealed on increase in the overall surface oxygen content of the carbon felts after KOH treatment. Also, cyclic voltametry tests showed electrochemical characteristics enhancement of the carbon felt.
Keywords
Secondary battery; Redox flow battery; Vanadium; Alkali treatment; Carbon felt; Energy storage system;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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