| 초록 |
Microbial Fuel cell (MFC) is developed for an energy positive wastewater treatment process for a sustainable society. Development of cathode technology is very important for practical use of MFC. In this study, for developing practical cathode catalyst technology, physico-chemically modified activated carbon catalysts. Comparing with a maximum power density of a platinum-coated cathode (976 mW/m2), a Co-N-C/AC cathode made with activated carbon doped with cobalt and 1,10-phenanthroline at 800oC produced 1,526 mW/m2 in the MFC condition, which was 56% higher than the Pt-coated cathode. A 500AC cathode made with heat-treated activated carbon at 500 ℃ produced 1,394 mW/m2 and non-treated activated carbon cathode (Plain AC) produced 1,014 mW/m2. Cathode impedance results showed that enhanced electrochemical performance was attributed to decrease of cathode charge transfer resistance, possibly due to the physical-chemical modification of activated carbon and the catalyst change. |
