关键词: 海底微生物燃料电池, 电极材料, 电极面积, 阳极深度, 电池性能

Abstract: Benthonic microbial fuel cells, with advantages of abundant sources in substrates, long-term operation, low maintenance cost and environmentally friendliness, etc, have high research value and broad prospects for development. At present, there are only limited usages for benthonic microbial fuel cells in practical application, mainly for its low power density output and long-term running instability. Therefore, this study took submarine sedimentary mud as the substrate for benthonic microbial fuel cells construction, and the cells were tested by different anode material, cathode-anode electrode area ratios, different anode modifications methods and anode depth underneath submarine sedimentary. Results showed that carbon felt was so far the best benthonic microbial fuel cell anode material, while the best cathode-anode electrode area ratio was 1∶1, the best anode modification method was ammonia treatment, and the best anode depth underneath submarine was 2 cm.

Key words: benthonic microbial fuel cells, electrode material, electrode area, anode depth, cells performance