College of Environmental Science and Engineering, State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, Donghua University, Shanghai, 201620, China; Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration, School of Ecological and Environmental Sciences, East China Normal University, Shanghai, 200241, China.
College of Environmental Science and Engineering, State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, Donghua University, Shanghai, 201620, China.
Chemosphere. 2020 Jun;248:125985. doi: 10.1016/j.chemosphere.2020.125985. Epub 2020 Jan 21.
Microbial fuel cells (MFCs) the most extensively described bioelectrochemical systems (BES), have been made remarkable progress in the past few decades. Although the energy and environment benefits of MFCs have been recognized in bioconversion process, there are still several challenges for practical applications on large-scale, particularly for relatively low power output by high ohmic resistance and long period of start-up time. Anodes serving as an attachment carrier of microorganisms plays a vital role on bioelectricity production and extracellular electron transfer (EET) between the electroactive bacteria (EAB) and solid electrode surface in MFCs. Therefore, there has been a surge of interest in developing advanced anodes to enhance electrode electrical properties of MFCs. In this review, different properties of advanced materials for decorating anode have been comprehensively elucidated regarding to the principle of well-designed electrode, power output and electrochemical properties. In particular, the mechanism of these materials to enhance bioelectricity generation and the synergistic action between the EAB and solid electrode were clarified in detail. Furthermore, development of next generation anode materials and the potential modification methods were also prospected.
微生物燃料电池 (MFC) 是最广泛描述的生物电化学系统 (BES)，在过去几十年中取得了显著的进展。尽管 MFC 在生物转化过程中的能源和环境效益已经得到认可，但在大规模实际应用中仍然存在一些挑战，特别是由于高欧姆电阻和较长的启动时间导致的相对较低的功率输出。阳极作为微生物的附着载体，在 MFC 中对生物电能产生和电活性细菌 (EAB)与固体电极表面之间的细胞外电子转移 (EET) 起着至关重要的作用。因此，人们对开发先进的阳极以增强 MFC 的电极电性能产生了浓厚的兴趣。在这篇综述中，根据精心设计的电极的原理、功率输出和电化学性能，全面阐述了用于修饰阳极的先进材料的不同特性。特别是，详细阐明了这些材料增强生物电能产生的机制以及 EAB 和固体电极之间的协同作用。此外，还展望了下一代阳极材料的发展和潜在的改性方法。
