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http://dx.doi.org/10.11001/jksww.2013.27.4.503

Evaluation of power density in microbial fuel cells using expanded graphite/carbon nanotube (CNT) composite cathode and CNT anode  

Han, Sun-Kee (한국방송통신대학교 환경보건학과)
Lee, Chae-Young (수원대학교 토목공학과.천환경기술연구소)
Publication Information
Journal of Korean Society of Water and Wastewater / v.27, no.4, 2013 , pp. 503-509 More about this Journal
Abstract
Electrochemical redox capacity of a microbial fuel cell (MFC) electrode is an important factor in the power density. This study was conducted to investigate the redox capacity of surface modified anode and cathode electrodes by measuring their conductivities. An anode electrode was modified with nitric acid and a cathode electrode was modified with heat treatment. The anode electrode modified with 20 % of the nitric acid concentration showed the highest conductivity of $6.2{\mu}S/cm/g$ and the maximum power density of $306.0mW/m^2$ when used in a MFC. The cathode electrode modified at $472^{\circ}C$ for 18 min showed the highest conductivity of $5.2{\mu}S/cm/g$ and the maximum power density of $276.20mW/m^2$ when used in a MFC. On the other hand, an MFC using both the electrodes showed the highest maximum power density of $408.2mW/m^2$. Meanwhile, a control MFC without modified electrodes generated very small voltage (0.014 mV), so the power density could not be measured.
Keywords
Microbial fuel cell; Anode electrode; Cathode electrode; Power density;
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Times Cited By KSCI : 1  (Citation Analysis)
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