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Cathode materials for ceramic based microbial fuel cells (MFCs)

Santoro, Carlo; Artyushkova, Kateryna; Gajda, Iwona; Babanova, Sofia; Serov, Alexey; Atanassov, Plamen; Greenman, John; Colombo, Alessandra; Trasatti, Stefano; Ieropoulos, Ioannis; Cristiani, Pierangela

Authors

Kateryna Artyushkova

Sofia Babanova

Alexey Serov

Plamen Atanassov

John Greenman

Alessandra Colombo

Stefano Trasatti

Pierangela Cristiani



Abstract

© 2015, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved. This study showed the electrochemical performance of different cathode electrodes tested on a ceramic separator functioning as a cation exchange membrane. Particularly, three different carbonaceous-based materials (carbon cloth (CC), carbon mesh (CM) and carbon veil (CV)) have been used as an electrode and as the current collector. When used as an electrode, CC outperformed the others. The carbonaceous materials have been modified using conductive paint (PA) and micro porous layer (MPL). With these modifications, the current output was twoethree times higher. Generally, the current produced was slightly higher with MPL treatment compared to PA except in the case of CV-MPL that had lower output probably due to the negative effect of the heat treatment on the mechanical strength of the CV. In the case of PA, the current collectors do not seem to affect the output. The same consideration can also be done for the MPL except for the CV. The surface morphology seems to explain the results. Linear correlation was found between current produced and nanoscale roughness and skewness. The results indicated that those morphological parameters increased the contact between the cathode and the ceramic surface, thus enhancing the current generated. The further addition of the inorganic nonplatinum group catalyst (Fe-AAPyr) on the surface significantly enhanced the performances. Following MPL modification and MPL-Fe-AAPyr addition, CM was the most cost effective support. CV was the most cost effective support with PA modification.

Journal Article Type Conference Paper
Publication Date Jan 1, 2015
Journal International Journal of Hydrogen Energy
Print ISSN 0360-3199
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 40
Issue 42
Pages 14706-14715
APA6 Citation Santoro, C., Artyushkova, K., Gajda, I., Babanova, S., Serov, A., Atanassov, P., …Cristiani, P. (2015). Cathode materials for ceramic based microbial fuel cells (MFCs). International Journal of Hydrogen Energy, 40(42), 14706-14715. https://doi.org/10.1016/j.ijhydene.2015.07.054
DOI https://doi.org/10.1016/j.ijhydene.2015.07.054
Keywords carbonaceous materials, ceramic separator, current production, morphology, Fe-AAPyr catalyst
Publisher URL http://dx.doi.org/10.1016/j.ijhydene.2015.07.054

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