The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, College of Environmental Science and Engineering, South China University of Technology, Guangzhou 510006, PR China.
College of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, PR China.
Biosens Bioelectron. 2011 May 15;26(9):3953-7. doi: 10.1016/j.bios.2011.02.046. Epub 2011 Mar 5.
A unique one-step method for fabrication of a membraneless microbial fuel cell (MFC) cathode was developed by coating a conductive polymer onto stainless steel mesh. The resulting polypyrrole/anthraquinone-2-sulfonate (PPy/AQS) film was synthesized via electropolymerization using AQS as the dopants. The scanning electron microscopy results indicated that the PPy/AQS film was uniformly formed on the metal mesh electrode without cracks on its surface and featuring a globular structure. Being equipped with such a cathode that was able to catalyze oxygen reduction and prevent water leakage, the membraneless MFC allowed power generation over 250 h and exhibited a maximum power density of 575 mW m(-2). Increasing film thickness seemed to result in a reduction in power performance due to the increased ohmic resistance of the cathode material and the enhanced difficulty for oxygen diffusion inside the cathode.
开发了一种独特的一步法制备无膜微生物燃料电池（MFC）阴极的方法，即将导电聚合物涂覆在不锈钢网上。通过使用蒽醌-2-磺酸钠（AQS）作为掺杂剂进行电聚合，合成了聚吡咯/蒽醌-2-磺酸钠（PPy/AQS）薄膜。扫描电子显微镜结果表明，PPy/AQS 薄膜均匀地形成在金属网电极上，表面无裂纹，呈球形结构。配备了能够催化氧气还原和防止漏水的阴极，无膜 MFC 可以持续发电 250 小时以上，最大功率密度为 575 mW m(-2)。由于阴极材料的欧姆电阻增加和氧气在阴极内部扩散的难度增加，增加薄膜厚度似乎会导致功率性能下降。
