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Carbon nanotube as an alternative cathode support and catalyst for microbial fuel cells

descriptionPublicationkeyboard_double_arrow_right Article , Journal 01 Feb 2013Publisher:Elsevier BVJournal:Applied Energy, volume 102, pages 1,050-1,056 (issn: 0306-2619,

Authors: Lee Yook Heng; Sang-Eun Oh; Manal Ismail; Javed Alam; Siti Kartom Kamarudin; Wan Ramli Wan Daud; Kasra Saeedfar; +2 Authors

doi: 10.1016/j.apenergy.2012.06.003

Carbon nanotube as an alternative cathode support and catalyst for microbial fuel cells

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Abstract

Abstract Microbial fuel cells (MFCs) hold great promise as an alternative for direct biochemical energy extraction from both biomass and wastewater. However, the commercialization and scaling-up of MFCs is not completely feasible, due to the high price of platinum (Pt) as a cathode catalyst. In this paper, we studied the use of a carbon nanotube (CNT) composite catalyst, to reduce the amount of Pt (without decline of efficiency) for moving towards the commercialization of MFCs. CNT/Pt composite electrodes would increase MFC power output by 8.7–32.2%; with respect to the pristine Pt as a catalyst for the cathode at a chemical oxygen demand (COD) substrate of 100 mg/l and 2000 mg/l, respectively. Moreover, the amount of Pt in the CNT/Pt electrode could be reduced by up to 25% of the amount necessary for a conventional Pt/carbon electrode.

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