Sediment microbial fuel cell (SMFC), equipped with Zn, Al, Cu, Fe or graphite felt (GF) anode and marine sediment, was performed. Graphite felt was used as a common cathode. SMFC was single chambered and did not use any redox mediator. The aim of this work was to find efficient anodic material. Oxidation reduction potential (ORP), cell voltage, current density, power density, pH and chemical oxygen demand (COD) were measured for SMFC’s performance.. The order of maximum power density was 913 mWm-2 for Zn, 646 mWm-2 for Fe, 387.8 mWm-2 for Cu, 266 mWm-2 for Al, and 127 mWm-2 for graphite felt (GF). The current density over voltage was found to be strongly correlated with metal electrodes, but the graphite felt electrode, in which relatively weaker electricity was observed because of its bio-oriented mechanism. Metal corrosion reactions and/or a complicated microbial electron transfer mechanism acting around the anodic compartment may facilitate to generate electricity. We presume that more sophisticated selection of anodic material can lead to better performance in SMFC.

Abstract
 1. Introduction
 2. Materials and Methods
  2.1 Sediment Collection
  2.2 Establishing sediment microbial fuel cell (SMFC)
  2.3 Anode and cathode compartments
  2.4 Electricity Measurement
 3. Results and Discussion
  3.1 Redox potentials of SMFC
  3.2 Power Density of SMFC
  3.3 Cell Voltage and Current density of SMFC
  3.4 pH and chemical oxygen demand (COD) of SMFC
 4. Conclusions
 References

• Niamul Haque(Department of Ocean System Engineering, Gyeongsang National University)
• Sung-Hyun Kwon(Department of Ocean System Engineering, Gyeongsang National University) Corresponding author
• Dae-Chul Cho(Department of Energy and Environmental Engineering, Soonchunhyang University)