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Increased power generation in supercapacitive microbial fuel cell stack using Fe—N—C cathode catalyst
The anode and cathode electrodes of a microbial fuel cell (MFC) stack, composed of 28 single MFCs, were used as the negative and positive electrodes, respectively of an internal self-charged supercapacitor. Particularly, carbon veil was used as the negative electrode and activated carbon with a Fe-b...
Autores principales: | , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Elsevier Sequoia
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6360396/ https://www.ncbi.nlm.nih.gov/pubmed/30774187 http://dx.doi.org/10.1016/j.jpowsour.2018.11.069 |
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author | Santoro, Carlo Kodali, Mounika Shamoon, Najeeb Serov, Alexey Soavi, Francesca Merino-Jimenez, Irene Gajda, Iwona Greenman, John Ieropoulos, Ioannis Atanassov, Plamen |
author_facet | Santoro, Carlo Kodali, Mounika Shamoon, Najeeb Serov, Alexey Soavi, Francesca Merino-Jimenez, Irene Gajda, Iwona Greenman, John Ieropoulos, Ioannis Atanassov, Plamen |
author_sort | Santoro, Carlo |
collection | PubMed |
description | The anode and cathode electrodes of a microbial fuel cell (MFC) stack, composed of 28 single MFCs, were used as the negative and positive electrodes, respectively of an internal self-charged supercapacitor. Particularly, carbon veil was used as the negative electrode and activated carbon with a Fe-based catalyst as the positive electrode. The red-ox reactions on the anode and cathode, self-charged these electrodes creating an internal electrochemical double layer capacitor. Galvanostatic discharges were performed at different current and time pulses. Supercapacitive-MFC (SC-MFC) was also tested at four different solution conductivities. SC-MFC had an equivalent series resistance (ESR) decreasing from 6.00 Ω to 3.42 Ω in four solutions with conductivity between 2.5 mScm(−1) and 40 mScm(−1). The ohmic resistance of the positive electrode corresponded to 75–80% of the overall ESR. The highest performance was achieved with a solution conductivity of 40 mS cm(−1) and this was due to the positive electrode potential enhancement for the utilization of Fe-based catalysts. Maximum power was 36.9 mW (36.9 W m(−3)) that decreased with increasing pulse time. SC-MFC was subjected to 4520 cycles (8 days) with a pulse time of 5 s (i(pulse) 55 mA) and a self-recharging time of 150 s showing robust reproducibility. |
format | Online Article Text |
id | pubmed-6360396 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | Elsevier Sequoia |
record_format | MEDLINE/PubMed |
spelling | pubmed-63603962019-02-14 Increased power generation in supercapacitive microbial fuel cell stack using Fe—N—C cathode catalyst Santoro, Carlo Kodali, Mounika Shamoon, Najeeb Serov, Alexey Soavi, Francesca Merino-Jimenez, Irene Gajda, Iwona Greenman, John Ieropoulos, Ioannis Atanassov, Plamen J Power Sources Article The anode and cathode electrodes of a microbial fuel cell (MFC) stack, composed of 28 single MFCs, were used as the negative and positive electrodes, respectively of an internal self-charged supercapacitor. Particularly, carbon veil was used as the negative electrode and activated carbon with a Fe-based catalyst as the positive electrode. The red-ox reactions on the anode and cathode, self-charged these electrodes creating an internal electrochemical double layer capacitor. Galvanostatic discharges were performed at different current and time pulses. Supercapacitive-MFC (SC-MFC) was also tested at four different solution conductivities. SC-MFC had an equivalent series resistance (ESR) decreasing from 6.00 Ω to 3.42 Ω in four solutions with conductivity between 2.5 mScm(−1) and 40 mScm(−1). The ohmic resistance of the positive electrode corresponded to 75–80% of the overall ESR. The highest performance was achieved with a solution conductivity of 40 mS cm(−1) and this was due to the positive electrode potential enhancement for the utilization of Fe-based catalysts. Maximum power was 36.9 mW (36.9 W m(−3)) that decreased with increasing pulse time. SC-MFC was subjected to 4520 cycles (8 days) with a pulse time of 5 s (i(pulse) 55 mA) and a self-recharging time of 150 s showing robust reproducibility. Elsevier Sequoia 2019-02-01 /pmc/articles/PMC6360396/ /pubmed/30774187 http://dx.doi.org/10.1016/j.jpowsour.2018.11.069 Text en © 2018 The Authors http://creativecommons.org/licenses/by/4.0/ This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Santoro, Carlo Kodali, Mounika Shamoon, Najeeb Serov, Alexey Soavi, Francesca Merino-Jimenez, Irene Gajda, Iwona Greenman, John Ieropoulos, Ioannis Atanassov, Plamen Increased power generation in supercapacitive microbial fuel cell stack using Fe—N—C cathode catalyst |
title | Increased power generation in supercapacitive microbial fuel cell stack using Fe—N—C cathode catalyst |
title_full | Increased power generation in supercapacitive microbial fuel cell stack using Fe—N—C cathode catalyst |
title_fullStr | Increased power generation in supercapacitive microbial fuel cell stack using Fe—N—C cathode catalyst |
title_full_unstemmed | Increased power generation in supercapacitive microbial fuel cell stack using Fe—N—C cathode catalyst |
title_short | Increased power generation in supercapacitive microbial fuel cell stack using Fe—N—C cathode catalyst |
title_sort | increased power generation in supercapacitive microbial fuel cell stack using fe—n—c cathode catalyst |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6360396/ https://www.ncbi.nlm.nih.gov/pubmed/30774187 http://dx.doi.org/10.1016/j.jpowsour.2018.11.069 |
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