Performance of Single-Chamber Microbial Fuel Cells Based on the Air Cathode of Hydrophobicity of Carbon Black/Polytetrafluoroethylene Gas Diffusion Layer

IF 3.2 4区工程技术 Q2 CHEMISTRY, MULTIDISCIPLINARY

Korean Journal of Chemical Engineering Pub Date : 2025-04-26 DOI:10.1007/s11814-025-00468-3

Hongrui Cao, Jin Sun, Mingyang Hu, Qing Feng, Zejie Wang

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Abstract

The effect of hydrophobicity of the gas diffusion layer on the performance of a single-chamber microbial fuel cell was investigated. The R4 (3:1) reactor showed the best performance with a maximum power density of 1431 ± 80.3 mW m⁻² and a coulombic efficiency of 45%. Scanning electron microscopy revealed that the gap between carbon black particles increased with decreasing PTFE ratio. Electrochemical analysis showed that the activated carbon/stainless-steel mesh/(CB/PTFE) electrode performed the best with the highest current density of 8.09 A m⁻². High-performance recovery (88%) of the contaminated electrode was achieved using lysozyme (5%) remediation method. In addition, the R4 (3:1) electrode was the most suitable choice as an air cathode for SC-MFC, with a fabrication cost of 17.71 $ m⁻². In conclusion, this study provides valuable insights into the preparation and optimization of air cathodes for MFCs, which can contribute to the development of future MFC technologies.

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基于炭黑/聚四氟乙烯气体扩散层疏水性空气阴极的单室微生物燃料电池性能

研究了气体扩散层疏水性对单室微生物燃料电池性能的影响。R4（3:1）反应器性能最佳，最大功率密度为1431±80.3 mW m−2，库仑效率为45%。扫描电镜观察发现，炭黑颗粒之间的间隙随着PTFE比的减小而增大。电化学分析表明，活性炭/不锈钢网/(CB/PTFE)电极性能最佳，电流密度最高，为8.09 A m−2。采用溶菌酶（5%）修复法对污染电极的回收率达到88%。此外，R4（3:1）电极作为SC-MFC的空气阴极是最合适的选择，其制造成本为17.71 $ m−2。总之，本研究为MFC空气阴极的制备和优化提供了有价值的见解，有助于未来MFC技术的发展。

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来源期刊

Korean Journal of Chemical Engineering 工程技术-工程：化工

CiteScore

4.60

自引率

11.10%

发文量

310

审稿时长

4.7 months

期刊介绍： The Korean Journal of Chemical Engineering provides a global forum for the dissemination of research in chemical engineering. The Journal publishes significant research results obtained in the Asia-Pacific region, and simultaneously introduces recent technical progress made in other areas of the world to this region. Submitted research papers must be of potential industrial significance and specifically concerned with chemical engineering. The editors will give preference to papers having a clearly stated practical scope and applicability in the areas of chemical engineering, and to those where new theoretical concepts are supported by new experimental details. The Journal also regularly publishes featured reviews on emerging and industrially important subjects of chemical engineering as well as selected papers presented at international conferences on the subjects.