Supercapacitive paper based microbial fuel cell: High current/power production within a low cost design
| Autor: | Jonathan Winfield, Ioannis Ieropoulos, Pavlina Theodosiou, Carlo Santoro |
|---|---|
| Přispěvatelé: | Santoro, C, Winfield, J, Theodosiou, P, Ieropoulos, I |
| Rok vydání: | 2019 |
| Předmět: |
Microbial fuel cell
Environmental Engineering Materials science 020209 energy Evaporation Bioengineering 02 engineering and technology Urine 010501 environmental sciences 01 natural sciences 7. Clean energy Capacitance Article Galvanostatic discharge law.invention law 0202 electrical engineering electronic engineering information engineering Composite material Waste Management and Disposal 0105 earth and related environmental sciences Supercapacitor Equivalent series resistance Renewable Energy Sustainability and the Environment Cathode Anode Low-cost system Electrode Galvanostatic discharges Supercapacitive mode |
| Zdroj: | Santoro, C, Winfield, J, Theodosiou, P & Ieropoulos, I 2019, ' Supercapacitive paper based microbial fuel cell: High current/power production within a low cost design ', Bioresource Technology Reports, vol. 7, 100297 . https://doi.org/10.1016/j.biteb.2019.100297 Bioresource Technology Reports |
| ISSN: | 2589-014X |
| DOI: | 10.1016/j.biteb.2019.100297 |
| Popis: | Microbial fuel cells (MFCs) with paper separators and liquid containing elements were investigated in supercapacitive mode. MFCs (15 mL) in a supercapacitive configuration, consisted of plain wrapped carbon veil anode (negative) and conductive latex cathode (positive). The internal supercapacitor is discharged galvanostatically and is self-recharged as red-ox reactions occur on both electrodes. MFCs were discharged at different current pulses varying from 1 mA to 7 mA. The MFCs had an equivalent series resistance of 41.2 ± 3.5 Ω caused mainly by the cathode. A maximum power of 1.380 ± 0.083 mW (0.092 ± 0.006 mW mL−1) was measured. Durability tests were conducted over 24 h collecting 1000 discharge cycles (0.5 s) and self-recharges (85 s) at a current of 1 mA. Over time the anode potential dropped causing a decline in performance perhaps due to evaporation of liquid from the pyramidal structure. Resistance and apparent capacitance measured during the durability test remained approximately constant during the cycles. Graphical abstract Unlabelled Image Highlights • Supercapacitor paper-based MFCs are reported for the first time. • Galvanostatic discharges at different current pulses (1 mA to 7 mA) were analysed. • Equivalent series resistance (ESR) and apparent capacitance (C) were identified. • Maximum power achieved was 1.380 ± 0.083 mW (0.092 ± 0.006 mW mL−1). • The system stability was investigated through 1000 discharge/self-recharge cycles. |
| Databáze: | OpenAIRE |
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