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Electrochemical evaluation of different polymer binders for the production of carbon-modified stainless-steel electrodes for sustainable power generation using a soil microbial fuel cell

Title data

Simeon, Meshack Imologie ; Herkendell, Katharina ; Pant, Deepak ; Freitag, Ruth:
Electrochemical evaluation of different polymer binders for the production of carbon-modified stainless-steel electrodes for sustainable power generation using a soil microbial fuel cell.
In: Chemical Engineering Journal Advances. Vol. 10 (2022) . - No. 100246.
ISSN 2666-8211
DOI: https://doi.org/10.1016/j.ceja.2022.100246

Project information

Project financing: Deutscher Akademischer Austauschdienst

Abstract in another language

In this study, four different polymeric binders - polytetrafluoroethylene (PTFE), two-component epoxy (epoxy), polyvinyl alcohol (PVA), and polyvinylidene fluoride (PVDF) - were used to fabricate a surface-modified stainless-steel electrode. The polymeric binders were used to bond highly conductive carbon-black to a stainless-steel support using a simple fabrication method. The performance of the electrodes in terms of sustainable power generation was tested in a soil microbial fuel cell (SMFC). PTFE showed the fastest and best initial response in no-load operation, reaching a voltage of 370 mV after 7 days, compared to epoxy, PVA, and PVDF, which had 163, 151.7, and -26.7 mV, respectively. Electrochemical measurements showed that epoxy and PVDF have similar redox potential when operated as anode and cathode in an SMFC. Evaluation of the long-term performance of the binders showed that epoxy gave 2.2-, 3.4-, and 4.9-fold higher performance than PVDF, PTFE, and PVA, respectively, under intermittent polarization. Although PVDF did not perform well in open circuits, it produced the highest current density in continuous operation with external loads. The most sustained performance was obtained with epoxy. This study has shown that epoxy can be a suitable and eco-friendly substitute for other binders using a simple fabrication method to produce high-performance anodes and cathodes for sustainable bioelectricity generation with a SMFC.

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: Electrochemical; sustainable performance; soil; microbial fuel cell; polymer binder; electrode
Institutions of the University: Faculties > Faculty of Engineering Science > Chair Process Biotechnology
Faculties > Faculty of Engineering Science > Chair Process Biotechnology > Chair Process Biotechnology - Univ.-Prof. Dr. Ruth Freitag
Profile Fields > Emerging Fields > Energy Research and Energy Technology
Result of work at the UBT: Yes
DDC Subjects: 500 Science > 500 Natural sciences
600 Technology, medicine, applied sciences > 600 Technology
600 Technology, medicine, applied sciences > 620 Engineering
600 Technology, medicine, applied sciences > 660 Chemical engineering
Date Deposited: 16 Aug 2022 06:20
Last Modified: 16 Aug 2022 06:20
URI: https://eref.uni-bayreuth.de/id/eprint/71462