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Marine microbial fuel cell : use of stainless steel electrodes as anode and cathode materials

Dumas, Claire and Mollica, Alfonso and Féron, Damien and Basséguy, Régine and Etcheverry, Luc and Bergel, Alain Marine microbial fuel cell : use of stainless steel electrodes as anode and cathode materials. (2007) Electrochimica Acta, vol. 5 (n° 2). pp. 468-473. ISSN 0013-4686

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Official URL: http://dx.doi.org/10.1016/j.electacta.2007.06.069

Abstract

Numerous biocorrosion studies have stated that biofilms formed in aerobic seawater induce an efficient catalysis of the oxygen reduction on stainless steels. This property was implemented here for the first time in a marine microbial fuel cell (MFC). A prototype was designed with a stainless steel anode embedded in marine sediments coupled to a stainless steel cathode in the overlying seawater. Recording current/potential curves during the progress of the experiment confirmed that the cathode progressively acquired effective catalytic properties. The maximal power density produced of 4mWm−2 was lower than those reported previously with marine MFC using graphite electrodes. Decoupling anode and cathode showed that the cathode suffered practical problems related to implementation in the sea, which may found easy technical solutions. A laboratory fuel cell based on the same principle demonstrated that the biofilm-covered stainless steel cathode was able to supply current density up to 140mAm−2 at +0.05V versus Ag/AgCl. The power density of 23mWm−2 was in this case limited by the anode. These first tests presented the biofilm-covered stainless steel cathodes as very promising candidates to be implemented in marine MFC. The suitability of stainless steel as anode has to be further investigated.

Item Type:Article
Additional Information:The original publication is available on http://www.sciencedirect.com/science/journal/00134686
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Commissariat à l'Energie Atomique et aux énergies alternatives - CEA
French research institutions > Centre National de la Recherche Scientifique - CNRS
Other partners > Consiglio Nazionale delle Ricerche - CNR (ITALY)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT
Université de Toulouse > Université Paul Sabatier-Toulouse III - UPS
Laboratory name:
Laboratoire de Génie Chimique - LGC (Toulouse, France) - Bioprocédés et systèmes microbiens (BioSyM)
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Deposited By: Regine BASSEGUY
Deposited On:06 Mar 2008 07:46

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