Marmara University, Environmental Engineering Department, 34722 Goztepe, Istanbul, Turkey.
Bioresour Technol. 2011 Nov;102(22):10425-30. doi: 10.1016/j.biortech.2011.08.082. Epub 2011 Sep 13.
The power production performance of a membrane-less air-cathode microbial fuel cell was evaluated for 53 days. Anode and cathode electrodes and the micro-fiber cloth separator were configured by sandwiching the separator between two electrodes. In addition, the air-facing side of the cathode was covered with a spunbonded olefin sheet instead of polytetrafluoroethylene (PTFE) coating to control oxygen diffusion and water loss. The configuration resulted in a low resistance of about 4Ω and a maximum power density of 750 mW/m2. However, as a result of a gradual decrease in the cathode potential, maximum power density decreased to 280 mW/m2. The declining power output was attributed to loss of platinum catalyst (8.26%) and biomass growth (38.44%) on the cathode. Coulombic efficiencies over 55% and no water leakage showed that the spunbonded olefin sheet covering the air-facing side of the cathode can be a cost-effective alternative to PTFE coating.
在 53 天的时间里，评估了无膜空气阴极微生物燃料电池的发电性能。阳极和阴极电极以及微纤维布分离器通过将分离器夹在两个电极之间来配置。此外，阴极的面向空气的一侧覆盖有纺粘烯烃片，而不是聚四氟乙烯（PTFE）涂层，以控制氧气扩散和水分损失。这种配置导致电阻约为 4Ω，最大功率密度为 750 mW/m2。然而，由于阴极电位逐渐下降，最大功率密度下降到 280 mW/m2。下降的功率输出归因于阴极上的铂催化剂损失（8.26%）和生物质生长（38.44%）。超过 55%的库仑效率和没有水泄漏表明，覆盖阴极面向空气一侧的纺粘烯烃片可以替代 PTFE 涂层，是一种具有成本效益的选择。
