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http://dx.doi.org/10.9713/kcer.2019.57.3.408

Development of Carbon Felt Electrode Using Urea for Vanadium Redox Flow Batteries  

Kim, So Yeon (Department of Chemical and Biomolecular Engineering, Yonsei University)
Kim, Hansung (Department of Chemical and Biomolecular Engineering, Yonsei University)
Publication Information
Korean Chemical Engineering Research / v.57, no.3, 2019 , pp. 408-412 More about this Journal
Abstract
In this study, nitrogen doped carbon felt was prepared by pyrolysis of urea at high temperature and applied as an electrode for vanadium redox flow cell. Urea is easier to handle than ammonia and forms $NH_2$ radicals at higher temperatures, creating a nitrogen functional group on the carbon surface and acting as an active site in the vanadium redox reaction. Therefore, the discharge capacity of activated carbon felt electrodes using urea was 14.9 Ah/L at a current density of $150mA/cm^2$, which is 23% and 187% higher than OGF and GF, respectively. These results show the possibility that activated carbon felt electrode using urea can be used as electrode material for redox flow battery.
Keywords
Vanadium redox flow battery; Nitrogen doping; Urea; electrode activation; Nitrogen functional group;
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