陶瓷膜性能对微生物燃料电池功率输出及阴极电解液生成的影响。
Effect of the ceramic membrane properties on the microbial fuel cell power output and catholyte generation.
作者信息
Merino-Jimenez Irene, Gonzalez-Juarez Fernando, Greenman John, Ieropoulos Ioannis
机构信息
Bristol BioEnergy Centre, Bristol Robotics Laboratory, University of the West of England, BS16 1QY, UK.
Research and Development Ceramics, ROCA Sanitario, S.A., Av. de La Generalitat, 231, 08840, Barcelona, Spain.
出版信息
J Power Sources. 2019 Jul 31;429:30-37. doi: 10.1016/j.jpowsour.2019.04.043.
Ceramic membranes for MFCs offer a low cost alternative to the expensive ion exchange membranes, whilst promoting catholyte accumulation. However, their physicochemical properties need to be optimised, in order to increase the power output and the catholyte quality from MFCs. Two compositions of fine fire clay (FFC) cured under three firing cycles were manufactured, analysed and tested as ion-exchange and structural material for MFCs. The samples were characterised by scanning electron microscopy (SEM) and electrochemical impedance spectroscopy (EIS). The power and catholyte generated from the ceramic MFCs with different FFC types was also evaluated. The results show a direct correlation between the ohmic resistance, the MFC power generation and the water absorption of the ceramics, giving a maximum power of 1 mW from the MFC with the most absorptive FFC (16.37% water absorbance). A slightly more alkaline catholyte was synthesised from the MFCs with higher water absorption FFC.
用于微生物燃料电池（MFC）的陶瓷膜为昂贵的离子交换膜提供了一种低成本替代方案，同时促进了阴极电解液的积累。然而，为了提高MFC的功率输出和阴极电解液质量，需要优化其物理化学性质。制备了两种在三个烧制周期下固化的细火泥（FFC）组合物，并作为MFC的离子交换和结构材料进行了分析和测试。通过扫描电子显微镜（SEM）和电化学阻抗谱（EIS）对样品进行了表征。还评估了使用不同FFC类型的陶瓷MFC产生的功率和阴极电解液。结果表明，陶瓷的欧姆电阻、MFC发电与吸水率之间存在直接关联，吸水率最高的FFC（吸水率为16.37%）的MFC产生的最大功率为1 mW。由吸水率较高的FFC的MFC合成的阴极电解液碱性略强。
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