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Carbon-supported perovskite oxides as oxygen reduction reaction catalyst in single chambered microbial fuel cells
- Source :
- Journal of Chemical Technology & Biotechnology. 88:774-778
- Publication Year :
- 2012
- Publisher :
- Wiley, 2012.
-
Abstract
- BACKGROUND: Pt-free cathodic catalyst is needed for microbial fuel cells (MFCs). Perovskite-type oxide could be a substitute for Pt because it has been proved to be a highly active and low-cost oxygen reduction catalyst in chemical fuel cells. RESULTS: A nano-sized La0.4Ca0.6Co0.9Fe0.1O3 perovskite-type oxide on a carbon support (LCCF/C) was prepared and tested for its performance and stability (15 cycles) in MFCs. An exchange current density of 7.030 × 10−5 (A cm−2) was obtained with fresh LCCF/C cathode and is increased to 7.438 × 10−5 (A cm−2) after 15 cycles operating in MFCs. A power density of 405 mW m−2 was achieved with the LCCF/C cathode at the 2nd cycle which was between those of Pt/C (560 mW m−2) and C (339 mW m−2) cathodes. At the end of the 15th cycle, the lowest decay (due to biofouling) rate on the open circuit voltage (2%) and the maximum power density (15%) were observed with LCCF/C cathode compared with those of Pt/C (4%, 17%) and C (22%, 69%) cathodes, respectively. CONCLUSIONS: This study demonstrated that perovskite-type oxide on carbon support catalysts could be a potential substitute for Pt for cathodic oxygen reduction reaction (ORR) in air-cathode MFCs. © 2012 Society of Chemical Industry
- Subjects :
- Microbial fuel cell
Materials science
Renewable Energy, Sustainability and the Environment
General Chemical Engineering
Organic Chemistry
Inorganic chemistry
Oxide
Exchange current density
chemistry.chemical_element
Pollution
Oxygen
Cathode
law.invention
Catalysis
Inorganic Chemistry
chemistry.chemical_compound
Fuel Technology
chemistry
law
Platinum
Waste Management and Disposal
Carbon
Biotechnology
Nuclear chemistry
Subjects
Details
- ISSN :
- 02682575
- Volume :
- 88
- Database :
- OpenAIRE
- Journal :
- Journal of Chemical Technology & Biotechnology
- Accession number :
- edsair.doi...........c66bc9366bcca870367b9a7dad143c1e