Poly (3,4-ethylenedioxythiophene) promotes direct electron transfer at the interface between Shewanella loihica and the anode in a microbial fuel cell

Xing, Lidan; Wu, Wenguo; Gu, Zhongze

doi:10.1016/j.jpowsour.2014.11.129

Cited by 86 publications

(53 citation statements)

References 37 publications

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“…Generally, μMFCs are featured by low material consumption, short start-up time, easy operation, and experiment parallelization13. To improve current and power densities of μMFCs, researchers have made significant progress in optimizing bacterial strains16172122, device structures181920242526, and anode materials232425262728293031323334353637383940414243444546. For example, due to the large surface area-to-volume ratio, many micro/nanomaterials have been developed as anode materials of μMFCs to promote bacterial attachment and colonization, and electrochemical catalytic activity of anodes, such as carbon nanotubes (CNTs)23284344, graphene45, graphene-based nanocomposites272930, poly(3,4-ethylenedioxy-thiophene) (PEDOT)313246, and PEDOT-based nanocomposites343536373839404142.…”

mentioning

confidence: 99%

Integrated Microfluidic Flow-Through Microbial Fuel Cells

Jiang

Ali

et al. 2017

Sci Rep

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This paper reports on a miniaturized microbial fuel cell with a microfluidic flow-through configuration: a porous anolyte chamber is formed by filling a microfluidic chamber with three-dimensional graphene foam as anode, allowing nutritional medium to flow through the chamber to intimately interact with the colonized microbes on the scaffolds of the anode. No nutritional media flow over the anode. This allows sustaining high levels of nutrient utilization, minimizing consumption of nutritional substrates, and reducing response time of electricity generation owing to fast mass transport through pressure-driven flow and rapid diffusion of nutrients within the anode. The device provides a volume power density of 745 μW/cm3 and a surface power density of 89.4 μW/cm2 using Shewanella oneidensis as a model biocatalyst without any optimization of bacterial culture. The medium consumption and the response time of the flow-through device are reduced by 16.4 times and 4.2 times, respectively, compared to the non-flow-through counterpart with its freeway space volume six times the volume of graphene foam anode. The graphene foam enabled microfluidic flow-through approach will allow efficient microbial conversion of carbon-containing bioconvertible substrates to electricity with smaller space, less medium consumption, and shorter start-up time.

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mentioning

confidence: 99%

Integrated Microfluidic Flow-Through Microbial Fuel Cells

Jiang

Ali

et al. 2017

Sci Rep

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“…Also, reductive current density response for MFC-1 was observed better than MFC-3, indicating increased ORR process for cathode where untreated carbon is used with ATMP. Overall, cyclic voltammograms revealed better electrochemical behaviour in the nitrogen doped carbon cathodes and the full picture can be attributed to improved electrical conductivity and increased active reaction surface area [26][27][28].…”

Section: Cyclic Voltammetrymentioning

confidence: 91%

Fouling resistant nitrogen doped carbon powder with amino-tri-methylene-phosphate cathode for microbial fuel cell

Kumar

Chatterjee

Ghangrekar

2017

Mater Renew Sustain Energy

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Long term stable performance of a microbial fuel cell (MFC) is difficult to achieve because of scale formation on cathode. Nitrogen doped carbon powder (NDCP) was used as cathode along with amino-trimethylene-phosphate (ATMP) as an anti-scaling agent in a MFC. Maximum power density of 66 mW/m 2 obtained in the MFC using NDCP as cathode, was 2.2 times higher than that obtained with simple carbon powder. High electroactive surface area and meso-porous structure of the NDCP improved electrochemical performance of the MFC having NDCP cathode. After 40 days of operation, the maximum power density decreased by only 12.5% in the MFC using NDCP and having ATMP in its cathode as compared to a 55.6% decrease in the MFC using only carbon powder in cathode due to fouling. Ultrathin shell structure of NDCP catalyst molecules, as evident from transmission electron microscopy (TEM) images, ensured high catalyst performance providing good electron transfer for enhancing oxygen reduction reaction (ORR). Less deposition of calcite molecules on cathode surface, illustrated via X-ray diffraction (XRD) after 40 days of operation, clearly reveals high anti-fouling property of ATMP as a cathode material. ATMP being a commercial antiscaling agent has inherent chelation properties to stop chemical fouling and thus helped in demonstrating stable long term performance of cathode in the MFCs. NDCP along with ATMP could be used for fabrication of a cost effective fouling resistant cathode for long term use by increasing ORR in MFCs to achieve stable power generation by minimizing scale formation on cathode and effective wastewater treatment simultaneously. Graphical abstract

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“…Liu et al [74] modified carbon cloth with 3,4-ethylenedioxythiophene to boost energy production. The power density of 140 mW m À2 was achieved, which increased by 43% compared with the plain carbon cloth as anode.…”

Section: Conductive Polymer Materialsmentioning

confidence: 99%

Microbial Fuel Cells: Nanomaterials Based on Anode and Their Application

Liu

Zhang

et al. 2020

Energy Tech

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Microbial fuel cells (MFCs) exhibit great potential to generate power through organic wastewater treatment. Limitations have restricted the advanced development of MFCs, including low power density, expensive electrode materials, and the challenge to manufacture MFCs in large scale. However, the introduction of advanced anode materials, especially porous and nanostructured materials, is believed to be an effective way to solve the problems, as they can promote bacteria extracellular electron transfer (EET) because of their unique physical, chemical, and electrical properties. Nanostructured materials, including carbon nanotubes (CNTs), graphene, activated carbon fiber, metal, metal oxides and conductive polymers, show many appreciable properties such as good conductivity, large specific surface area, and excellent catalytic activity. Additionally, nanomaterials with unique electrochemical properties provide strong charge interactions with organic compounds and the direct electrochemistry process between bacteria and the anode. This Review comprehensively focuses on the recent development of modification of nanostructured anode materials in view of crucial intrinsic factors to enhance electricity output. Furthermore, the enhanced performance of MFCs and the corresponding known mechanism is also discussed, which enables active bacteria to facilitate electron transfer. Finally, promising strategies to modify anode nanomaterials for future research are presented.

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Poly (3,4-ethylenedioxythiophene) promotes direct electron transfer at the interface between Shewanella loihica and the anode in a microbial fuel cell

Cited by 86 publications

References 37 publications

Integrated Microfluidic Flow-Through Microbial Fuel Cells

Integrated Microfluidic Flow-Through Microbial Fuel Cells

Fouling resistant nitrogen doped carbon powder with amino-tri-methylene-phosphate cathode for microbial fuel cell

Microbial Fuel Cells: Nanomaterials Based on Anode and Their Application

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