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Effect of chemically modified Vulcan XC-72R on the performance of air-breathing cathode in a single-chamber microbial fuel cell

Duţeanu, Narcis Mihai and Erable, Benjamin and Kumar, S.M. Senthil and Ghangrekar, Makarand Madhao and Scott, Keith Effect of chemically modified Vulcan XC-72R on the performance of air-breathing cathode in a single-chamber microbial fuel cell. (2010) Bioresource Technology, vol. 101 (n° 14). pp. 5250-5255. ISSN 0960-8524

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Official URL: http://dx.doi.org/10.1016/J.BIORTECH.2010.01.120

Abstract

The catalytic activity of modified carbon powder (VulcanXC-72R) for oxygen reduction reaction (ORR) in an air-breathingcathode of amicrobialfuelcell (MFC) has been investigated. Chemical modification was carried out by using various chemicals, namely 5% nitric acid, 0.2 N phosphoric acid, 0.2 N potassium hydroxide and 10% hydrogen peroxide. Electrochemical study was performed for ORR of these modified carbon materials in the buffer solution pH range of 6–7.5 in the anodic compartment. Although, these treatments influenced the surface properties of the carbon material, as evident from the SEM-EDX analysis, treatment with H2PO4, KOH, and H2O2 did not show significant activity during the electrochemical test. The HNO3 treated Vulcan demonstrated significant ORR activity and when used in the single-chamber MFC cathode, current densities (1115 mA/m2, at 5.6 mV) greater than those for a Pt-supported un-treated carbon cathode were achieved. However, the power density for the latter was higher. Such chemicallymodified carbon material can be a cheaper alternative for expensive platinum catalyst used in MFC cathode construction.

Item Type:Article
Additional Information:Thanks to Elsevier editor. The definitive version is available at http://www.sciencedirect.com The original PDF of the article can be found at : http://www.sciencedirect.com/science/article/pii/S0960852410002063
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT
Université de Toulouse > Université Paul Sabatier-Toulouse III - UPS
Other partners > Indian Institute of Technology-Kharagpur - IIT Kharagpur (INDIA)
Other partners > Politehnica University of Timisoara (ROMANIA)
Other partners > Newcastle University (UNITED KINGDOM)
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Deposited By:Audrey LEFEVRE

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