In this paper, we report on the development and optimization of a copper anode material coated with a thin polyaniline layer for use in a microbial fuel cell. The polyaniline materials were optimized in terms of their conductivity. The synthesis was carried out using hydrochloric acid, sulfuric acid, and formic acid as dopants. The materials were characterized using UV-VIS and FTIR spectroscopy for structural analysis, while morphological evaluation was done using atomic force microscopy. The electrical conductivity of the different polyaniline materials was done using a four-point probe coupled to a source meter. Materials doped with formic acid were found to have the highest conductivity at 2.0 S cm⁻¹ with an optical bandgap of 2.47 eV. The optimum dipping time was established to be 5 min, which gave the level of inhibition towards copper degradation of 96.24%. The performance of the polyaniline-copper electrode was evaluated in an H-type microbial fuel cell. The highest power density recorded was 1.5 ± 0.28 mW m⁻³ (normalized to the volume of the anode) with an internal resistance of 15.86 kΩ.

在本文中，我们报告了用于微生物燃料电池的涂有聚苯胺薄层的铜阳极材料的开发和优化。聚苯胺材料在电导率方面进行了优化。使用盐酸，硫酸和甲酸作为掺杂剂进行合成。使用UV-VIS和FTIR光谱对材料进行结构分析，同时使用原子力显微镜对材料进行形态评估。不同的聚苯胺材料的电导率是使用耦合到源计的四点探针完成的。发现掺杂甲酸的材料在2.0 S cm ^-1下具有最高的电导率光学带隙为2.47 eV。最佳浸渍时间为5分钟，对铜降解的抑制水平为96.24％。在H型微生物燃料电池中评价聚苯胺-铜电极的性能。记录的最高功率密度为1.5±0.28 mW m ^-3（标准化为阳极体积），内部电阻为15.86kΩ。