| 초록 |
For decreasing cost of cathode in microbial fuel cells (MFCs), activated carbon has been applied to the air cathode to alternate platinum catalyst. In this study, for increment of cathode performance, we heat-treated AC at 500℃ in nitrogen condition to increase specific area and porosity. We tested 3-types cathode; 1) Pt-carbon cloth (Pt), 2) AC-coated stainless steel mesh (AC), and 3) AC with 500℃ heat treated AC (AC500). Maximum power density of the AC500 cathode (1,359 mW/m2) was higher than the non-heated AC cathode (1,014 mW/m2), and Pt cathode (969 mW/m2) produced less maximum power than the AC cathodes. Cathode resistance of the AC500 (54 Ω) was lower than the AC cathode (89 Ω), but the Pt cathode (108Ω) showed higher cathode resistance than the both. An MFC with a stainless steel mesh cathode coated with AC500 showed highest maximum power density due to its low cathode resistance. |
