“…Due to the minimization of ohmic loss at the interface, MFCs assembled with CP/CNT(W) electrodes have excellent electrochemical performance to facilitate the formation of larger biofilm and electron transport. 48 In addition, The composite modified anodes between several conductive polymers for MFC can greatly enhance power output, which is due to their synergistic effect and complementary advantages, jointly promoting the bacterial EET. 49–51 Figure 3.(a) Scanning electron microscopy image of bacterial growth after operation.…”
Section: Surface Modification Of Anodementioning
confidence: 99%
“…These factors contributed to the power output of MFC. 46 Liang 47 48 In addition, The composite modified anodes between several conductive polymers for MFC can greatly enhance power output, which is due to their synergistic effect and complementary advantages, jointly promoting the bacterial EET. [49][50][51] Graphene modification.…”
Section: Modification Of Conductive Nanomaterialsmentioning
In microbial fuel cell (MFC), the anode is the carrier of microbial attachment and growth, and its material and surface structure play a vital role in MFC electricity generation. Therefore, anode surface optimization is an effective way to improve MFC performance. Although the power generation of bacteria has been confirmed and studied as early as the beginning of the 20th century, up to now, MFC still has the extremely challenging problem of low current and low power output in practical application. To improve the performance of MFC, several strategies have been applied to enhance the bacterial extracellular electron transfer. One promising technology is the genetic engineering approach, and some outstanding research results have been obtained. Another effective strategy is to design and fabricate a high-performance electrode because anode material is the essential factor affecting MFC performance, which provides surface active sites for microbial adhesion, reproduction and interfacial electron transfer. At present, the MFC anodes mainly include carbon-based electrodes and a variety of metal electrodes, but untreated anodes have always been unable to overcome the obstacle of low power output. Anode modification, a common and effective method, is employed for improving the power output of MFC. For this reason, this review is primarily focused on the applications of various anode materials and its nanoscale modification in the field of MFC, including the influence of different anode materials on the power output of MFC, and analyzes the reasons why anode modification enhances output performance. Furthermore, the influence of anode research on the practical application of MFC in the future is prospected.
“…Due to the minimization of ohmic loss at the interface, MFCs assembled with CP/CNT(W) electrodes have excellent electrochemical performance to facilitate the formation of larger biofilm and electron transport. 48 In addition, The composite modified anodes between several conductive polymers for MFC can greatly enhance power output, which is due to their synergistic effect and complementary advantages, jointly promoting the bacterial EET. 49–51 Figure 3.(a) Scanning electron microscopy image of bacterial growth after operation.…”
Section: Surface Modification Of Anodementioning
confidence: 99%
“…These factors contributed to the power output of MFC. 46 Liang 47 48 In addition, The composite modified anodes between several conductive polymers for MFC can greatly enhance power output, which is due to their synergistic effect and complementary advantages, jointly promoting the bacterial EET. [49][50][51] Graphene modification.…”
Section: Modification Of Conductive Nanomaterialsmentioning
In microbial fuel cell (MFC), the anode is the carrier of microbial attachment and growth, and its material and surface structure play a vital role in MFC electricity generation. Therefore, anode surface optimization is an effective way to improve MFC performance. Although the power generation of bacteria has been confirmed and studied as early as the beginning of the 20th century, up to now, MFC still has the extremely challenging problem of low current and low power output in practical application. To improve the performance of MFC, several strategies have been applied to enhance the bacterial extracellular electron transfer. One promising technology is the genetic engineering approach, and some outstanding research results have been obtained. Another effective strategy is to design and fabricate a high-performance electrode because anode material is the essential factor affecting MFC performance, which provides surface active sites for microbial adhesion, reproduction and interfacial electron transfer. At present, the MFC anodes mainly include carbon-based electrodes and a variety of metal electrodes, but untreated anodes have always been unable to overcome the obstacle of low power output. Anode modification, a common and effective method, is employed for improving the power output of MFC. For this reason, this review is primarily focused on the applications of various anode materials and its nanoscale modification in the field of MFC, including the influence of different anode materials on the power output of MFC, and analyzes the reasons why anode modification enhances output performance. Furthermore, the influence of anode research on the practical application of MFC in the future is prospected.
“…Compared with the untreated CNT-CFs, a 4.4 times power density was exhibited for the welded composites (2015.6 mW m À 2 ). [86] To further enhance the contact between carbon materials in a composite, electrospinning method was effective to generate a hybridized material where the interconnectivity between CNTs and carbon fibers was greatly enhanced compared with the above interfacially connected structure. [87] Besides, this electrospinning method was cost-effective and facile if preparation of 1D structures was the target.…”
Section: Cnt-based Mfc Anodementioning
confidence: 99%
“…Schematic illustration of the LBL assembly with PEI and CNT and thermal welding method for preparing the conductive 3D interconnected CNT network CP/CNT(W). Reproduced from Ref [86]. with permission from Elsevier.…”
site). The relationship is demonstrated in depth between the physicochemical properties of the anode surface/interface/bulk (porosity, surface area, hydrophilicity, partical size, charge, roughness, etc.) and the bioelectrochemical performances (electron transfer, electrolyte diffusion, capacitance, toxicity, start-up time, current, power density, voltage, etc.). An outlook for future work is also proposed.
“…18,19 For example, Zhao's group reported an electrode by welding assembly of 3D carbon nanotubes (CNTs) on a carbon-fiber paper, and achieved a maximum power density of 2015.6 mW m −2 , which was attributed to its large surface area and low electron transfer resistance with the modification of the uniformly distributed CNT network. 20 However, as the thickness of the biofilm increases, the small pores between the 3D interconnected CNTs would be covered by the dense biofilm, thus limiting the matrix transport capacity from the biofilm to the electrode, which is not conducive to long-term stable current output. In addition, Wang and co-workers designed N-doped C/Fe 3 O 4 nanotube arrays on carbon fiber cloth and reported that the MFC outfitted with the 3D structure anode showed a maximum power density of 1.21 W m −2 , dramatically higher than that with the bare carbon cloth (0.58 W m −2 , about 2.1 times increase).…”
In general, more exoelectrogens’ enrichment implies higher power density. However, due to the low electrocatalytic activity of the anode, it limits the performance of microbial fuel cell. Here, based on...
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