Catalysis of oxygen reduction in PEM fuel cell by seawater biofilm

Autor: Alfonso Mollica, Alain Bergel, Damien Feron
Přispěvatelé: Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE), Consiglio Nazionale delle Ricerche - CNR (ITALY), Commissariat à l'Energie Atomique et aux énergies alternatives - CEA (FRANCE), Université Toulouse III - Paul Sabatier - UT3 (FRANCE), Centre National de la Recherche Scientifique - CNRS (FRANCE)
Jazyk: angličtina
Rok vydání: 2005
Předmět:
Zdroj: Electrochemistry Communications, Vol 7, Iss 9, Pp 900-904 (2005)
ISSN: 1388-2481
Popis: The catalysis of oxygen reduction on metallic materials has been widely studied in the domain of aerobic corrosion. In this framework, it has been stated that seawater biofilms are able to catalyse efficiently oxygen reduction on stainless steels. This capacity was transferred here to the catalysis of the cathodic reaction of a proton exchange membrane fuel cell. A laboratory-scale fuel cell was designed with a stainless steel cathode, a platinum anode, and two separated liquid loops. The cathodic loop was air-saturated, while the anodic loop was hydrogen saturated. Seawater biofilm was previously grown on the stainless steel cathode, which was then set up into the fuel cell. The presence of the seawater biofilm on the stainless steel surface led to efficient catalysis of oxygen reduction. The biofilm-covered cathode was able to support current density up to 1.89 A/m2. Power density of 0.32 W/m2 was supplied with 1.34 A/m2 current density. Keywords: Biofilm, Microbial fuel cell, PEM fuel cell, Oxygen reduction, Stainless steel
Databáze: OpenAIRE
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