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Supercapacitive paper based microbial fuel cell: High current/power production within a low cost design

Santoro, Carlo; Winfield, Jonathan; Theodosiou, Pavlina; Ieropoulos, Ioannis

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Authors

Carlo Santoro Carlo.Santoro@uwe.ac.uk
Associate Professor in Bio-Energy

Pavlina Theodosiou

Yannis Ieropoulos Ioannis2.Ieropoulos@uwe.ac.uk
Professor in Bioenergy & Director of B-B



Abstract

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.

Citation

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, 7, Article 100297. https://doi.org/10.1016/j.biteb.2019.100297

Journal Article Type Article
Acceptance Date Jul 26, 2019
Online Publication Date Jul 27, 2019
Publication Date Sep 1, 2019
Deposit Date Oct 7, 2020
Publicly Available Date Mar 29, 2024
Journal Bioresource Technology Reports
Electronic ISSN 2589-014X
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 7
Article Number 100297
DOI https://doi.org/10.1016/j.biteb.2019.100297
Keywords Microbial fuel cell; Urine; Supercapacitive mode; Galvanostatic discharges; Low-cost system
Public URL https://uwe-repository.worktribe.com/output/4443389
Additional Information This article is maintained by: Elsevier; Article Title: Supercapacitive paper based microbial fuel cell: High current/power production within a low cost design; Journal Title: Bioresource Technology Reports; CrossRef DOI link to publisher maintained version: https://doi.org/10.1016/j.biteb.2019.100297; Content Type: article; Copyright: © 2019 The Authors. Published by Elsevier Ltd.

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