Combination of bioelectrochemical systems and electrochemical capacitors: Principles, analysis and opportunities

Caizán‐Juanarena, Leire; Borsje, Casper; Sleutels, Tom; Yntema, Doekle; Santoro, Carlo; Ieropoulos, Ioannis; Soavi, Francesca; Heijne, Annemiek ter

doi:10.1016/j.biotechadv.2019.107456

Cited by 63 publications

(40 citation statements)

References 145 publications

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“…Microbial fuel cells (MFCs) have shown a promising outlook for treating or pre-treating wastewater but the production of power remains still quite low for practical applications. [5,67] The MFCs operation mode in intermittent and supercapacitive mode introduced recently in 2016 explores the galvanostatic discharges of the MFC electrodes considered like an internal supercapacitor. [60] Simple carbonaceous-based materials used in this work as electrodes for MFCs were shown previously to display supercapacitive features and enhance power output.…”

Section: Discussionmentioning

confidence: 99%

“…The presence of mixed responses in a microbial fuel cell is already known and has been previously reported. [64,67] ESR has been measured and had a value of 61.7 � 1.7 Ω. Also, the energy delivered increased with a decrease in i pulse .…”

Section: Supercapacitive Microbial Fuel Cellsmentioning

confidence: 99%

“…When the circuit of the MFC is closed, at high current regimes and at the shortest times, charges accumulated on the interface of both electrodes are been released to the electrolyte, like in a SC discharge. [67] Scheme 1 reports the equivalent circuits that describe the parallel connections of the MFC and SC. The MFC is represented with the impedance abbreviated as Z MFC .…”

Section: Supercapacitive Behavior Of Mfc and Mfc-scmentioning

confidence: 99%

“…[60] Supercapacitive MFCs have shown the possibility of enhancing significantly the power delivered in the form of pulses. [67,68] In this work, an applied electrochemical study is presented in which MFC firstly is considered in its supercapacitive mode and discharged galvanostatically. Then, commercial supercapacitors having a different capacitance of 1 F, 3 F, and 6 F are systematically tested, and discharges are exploited.…”

Section: Introductionmentioning

confidence: 99%

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Boosting Microbial Fuel Cell Performance by Combining with an External Supercapacitor: An Electrochemical Study

et al. 2020

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Microbial fuel cells (MFCs), despite representing a promising technology, suffer from low power generation that hinders, in most of the cases, their application as power sources. In fact, MFCs are usually coupled with supercapacitors or batteries and these storage units accumulate the energy harvested by MFCs and deliver it on demand. In this work, the electrodes of a MFC are used as electrodes of an internal supercapacitor and discharges and self‐recharges are performed and investigated. Discharges between 1.5 mA and 4 mA were presented producing a maximum power of 1.59 mW. Discharges between 1 mA and 100 mA and recharges are systematically studied for three commercial supercapacitors (SCs) with different capacitances of 1 F, 3 F, and 6 F. The MFC was also connected in parallel with external SCs and discharged galvanostatically. The SC was self‐recharged by the MFC without any additional external power sources. At lower current pulses, the MFC contributed to the overall capacitance, probably owing to its faradaic component. At higher current pulses, the use of SCs enables the energy to be harvested by MFCs at power levels that could not be achieved with the MFC alone. This study demonstrates that, through the proper connection and operation mode of the MFC and SC, it is possible to improve and maximize the performance of every single unit. Understanding the MFC−SC combination is important for identifying the right practical application for which the combination is suitable.

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Section: Discussionmentioning

confidence: 99%

Section: Supercapacitive Microbial Fuel Cellsmentioning

confidence: 99%

Section: Supercapacitive Behavior Of Mfc and Mfc-scmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Boosting Microbial Fuel Cell Performance by Combining with an External Supercapacitor: An Electrochemical Study

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“…For example, membrane electrode assembly-type MFCs were applied to reduce the internal resistance, 12 and uidized electrodes or packed-bed electrodes acting as threedimensional electrodes were used to overcome the diffusion limitations of substrates and enhance the effective area of bio-lms in large reactors. [13][14][15][16][17][18] A uidized electrode-type MFC was analyzed to assess the capacitive characteristics of granular activated carbon (GAC) particles. 19 Electrons can be stored in the GAC particles in the form of an electric double layer, and a continuous current can be generated with intermittent contact between the GAC particles and the current collector.…”

Section: Introductionmentioning

confidence: 99%

Suspended anode-type microbial fuel cells for enhanced electricity generation

et al. 2020

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Electricity generation in microbial fuel cells can be restricted by a few factors, such as the effective area of the anode for biofilm attachment, diffusion limitation of substrates and internal resistance. In this paper, a suspended anode (carbon-based felt granule)-type microbial fuel cell was developed to make full use of the volume of the anode chamber and provide a larger surface area of the anode for the growth of exoelectrogenic bacteria. The current collector was rotated in the anodic chamber to contact with the suspended granules intermittently and achieve better mixing. The open-circuit voltage reached steady state at around 0.83 V. The maximum power density obtained from each scenario increased steadily with the increase in mixing rate. The internal resistance decreased when the rotational rate and the content of the carbon granules were increased. The maximum power density reached 951 AE 14 mW m À3 with a corresponding minimum internal resistance of 162.9 AE 3.5 U when the mass of carbon granules was 50 g and the rotational rate was 300 rpm. The suspended microbes made negligible contribution to the power density. The microbial fuel cell with a higher content of carbon granules had lower coulombic efficiency and lower relative abundance of exoelectrogenic bacteria.rsc.li/rsc-advances 9868 | RSC Adv., 2020, 10, 9868-9877This journal is

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Boosting Microbial Fuel Cell Performance by Combining with an External Supercapacitor: An Electrochemical Study

et al. 2020

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Combination of bioelectrochemical systems and electrochemical capacitors: Principles, analysis and opportunities

Cited by 63 publications

References 145 publications

Boosting Microbial Fuel Cell Performance by Combining with an External Supercapacitor: An Electrochemical Study

Boosting Microbial Fuel Cell Performance by Combining with an External Supercapacitor: An Electrochemical Study

Suspended anode-type microbial fuel cells for enhanced electricity generation

Boosting Microbial Fuel Cell Performance by Combining with an External Supercapacitor: An Electrochemical Study

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