Preparation, characterization, and optimization of a porous polyaniline-copper anode microbial fuel cell

Mwale, S. S.; Munyati, M. O.; Nyirenda, James

doi:10.1007/s10008-020-04839-0

Cited by 11 publications

(3 citation statements)

References 61 publications

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“…Indeed, corrosion rate determine the amount of soluble Cu produced at the surface of coated electrodes, which inhibited more or less bacterial activity and consequently reduced current generation by electroactive bacteria. The power density of 500 µm-thick CNF-PDMS coated electrodes was normalized to the volume of the anodes, in order to compare their performances with those of polyaniline-Cu anodes previously described by Mwale et al, [17]. The normalized power density of CNF-PDMS coated anodes was around 70 W m −3 , which was about 10 4 times higher than that of polyaniline-Cu anodes ((1.5 ± 0.3) mW m −2 ).…”

Section: Electricity Production Performancementioning

confidence: 99%

“…Thus, surface modification is a necessary step when using Cu material as anode in MFC operations. To the best of our knowledge, only one recent study of Mwale et al, investigated the application of Cu coated with a polyaniline thin film as an anode material in MFC application [17]. In this study, polyaniline was used as a protector conducting polymer of Cu anodes.…”

Section: Introductionmentioning

confidence: 99%

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Carbon Nano-Fiber/PDMS Composite Used as Corrosion-Resistant Coating for Copper Anodes in Microbial Fuel Cells

et al. 2021

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The development of high-performance anode materials is one of the greatest challenges for the practical implementation of Microbial Fuel Cell (MFC) technology. Copper (Cu) has a much higher electrical conductivity than carbon-based materials usually used as anodes in MFCs. However, it is an unsuitable anode material, in raw state, for MFC application due to its corrosion and its toxicity to microorganisms. In this paper, we report the development of a Cu anode material coated with a corrosion-resistant composite made of Polydimethylsiloxane (PDMS) doped with carbon nanofiber (CNF). The surface modification method was optimized for improving the interfacial electron transfer of Cu anodes for use in MFCs. Characterization of CNF-PDMS composites doped at different weight ratios demonstrated that the best electrical conductivity and electrochemical properties are obtained at 8% weight ratio of CNF/PDMS mixture. Electrochemical characterization showed that the corrosion rate of Cu electrode in acidified solution decreased from (17 ± 6) × 103 μm y−1 to 93 ± 23 μm y−1 after CNF-PDMS coating. The performance of Cu anodes coated with different layer thicknesses of CNF-PDMS (250 µm, 500 µm, and 1000 µm), was evaluated in MFC. The highest power density of 70 ± 8 mW m−2 obtained with 500 µm CNF-PDMS was about 8-times higher and more stable than that obtained through galvanic corrosion of unmodified Cu. Consequently, the followed process improves the performance of Cu anode for MFC applications.

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Section: Electricity Production Performancementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Carbon Nano-Fiber/PDMS Composite Used as Corrosion-Resistant Coating for Copper Anodes in Microbial Fuel Cells

et al. 2021

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“…The anode electrode is an essential component in the configuration of MFCs, since it is the support for the bacterial biofilm and the conductor of the released electrons [22,23]. The main characteristics that the anode material must have are biocompatibility, high electrical conductivity, corrosion resistance, chemical stability, high surface area, non-toxicity, good toughness, low cost, and being hydrophilic, and they should not decompose in the substrate [24,25]. Taking these characteristics into account, metal-based and carbon-based materials have been used [26].…”

Section: Introductionmentioning

confidence: 99%

Activated Carbon Electrodes for Bioenergy Production in Microbial Fuel Cells Using Synthetic Wastewater as Substrate

Agüero-Quiñones,

Ávila-Sánchez,

Rojas-Flores

et al. 2023

Sustainability

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The growing global energy demand drives the need to develop new clean energy technologies. In this context, microbial fuel cells (MFC) are one of the emerging technologies with great potential for eco-friendly energy generation; however, the correct choice of electrode material is a significant limitation in the optimal configuration of MFCs. Therefore, this research evaluated the efficiency of activated carbon (AC) anode electrodes for bioenergy production in MFC using synthetic wastewater as a substrate. Peak values of voltage (1120 ± 0.050 mV), current (4.64 ± 0.040 mA), power density (208.14 ± 17.15 mW/cm2), and current density (5.03 A/cm2) were generated, and the Rint obtained was 214.52 ± 5.22 Ω. The substrate was operated at pH values from 5.31 to 7.66, maximum ORP values (858 mV) were reached, and turbidity was reduced to 25.11 NTU. The SEM-EDS (scanning electron microscopy–energy-dispersive X-ray spectroscopy) analyses allowed us to observe the morphology and composition of the AC electrodes, revealing a predominance of O, C, Si, Al, Fe, K, and Ca. It is concluded that the AC electrodes have the potential to produce bioenergy at a laboratory by means of MFC.

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Surfactant mediated electrodeposition of copper nanostructures for environmental electrochemistry: influence of morphology on electrochemical nitrate reduction reaction

Naveen

Kumar

2022

J Solid State Electrochem

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Preparation, characterization, and optimization of a porous polyaniline-copper anode microbial fuel cell

Cited by 11 publications

References 61 publications

Carbon Nano-Fiber/PDMS Composite Used as Corrosion-Resistant Coating for Copper Anodes in Microbial Fuel Cells

Carbon Nano-Fiber/PDMS Composite Used as Corrosion-Resistant Coating for Copper Anodes in Microbial Fuel Cells

Activated Carbon Electrodes for Bioenergy Production in Microbial Fuel Cells Using Synthetic Wastewater as Substrate

Surfactant mediated electrodeposition of copper nanostructures for environmental electrochemistry: influence of morphology on electrochemical nitrate reduction reaction

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