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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

Lookup NU author(s): Dr Narcis Duteanu, Dr Benjamin Erable, Dr Makarand Ghangrekar, Emeritus Professor Keith Scott


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The catalytic activity of modified carbon powder (Vulcan XC-72R) for oxygen reduction reaction (ORR) in an air-breathing cathode of a microbial fuel cell (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/m(2), 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 chemically modified carbon material can be a cheaper alternative for expensive platinum catalyst used in MFC cathode construction. (C) 2010 Elsevier Ltd. All rights reserved.

Publication metadata

Author(s): Duteanu N, Erable B, Kumar SMS, Ghangrekar MM, Scott K

Publication type: Article

Publication status: Published

Journal: Bioresource Technology

Year: 2010

Volume: 101

Issue: 14

Pages: 5250-5255

Print publication date: 01/07/2010

ISSN (print): 0960-8524

ISSN (electronic): 1873-2976

Publisher: Elsevier


DOI: 10.1016/j.biortech.2010.01.120


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Funder referenceFunder name
MKTD-CT-2004-517215European Community