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Title: Electrical performance of low cost cathodes prepared by plasma sputtering deposition in microbial fuel cells
Authors: Lefebvre, O. 
Tang, Z. 
Fung, M.P.H.
Chua, D.H.C. 
Chang, I.S.
Ng, H.Y. 
Keywords: Biocathode
Microbial fuel cell
Issue Date: 15-Jan-2012
Citation: Lefebvre, O., Tang, Z., Fung, M.P.H., Chua, D.H.C., Chang, I.S., Ng, H.Y. (2012-01-15). Electrical performance of low cost cathodes prepared by plasma sputtering deposition in microbial fuel cells. Biosensors and Bioelectronics 31 (1) : 164-169. ScholarBank@NUS Repository.
Abstract: Microbial fuel cells (MFCs) could potentially be utilized for a variety of applications in the future from biosensors to wastewater treatment. However, the amount of costly platinum (Pt) used as a catalyst should be minimized via innovative deposition methods such as sputtering. In addition, alternative and low-cost catalysts, such as cobalt (Co), should be sought. In this study, ultra low Pt or Co cathodes (0.1mgcm -2) were manufactured by plasma sputtering deposition and scanning electron micrographs revealed nano-clusters of metal catalyst in a porous structure favorable to the three-phase heterogeneous catalytic reaction. When operated in single-chamber air-cathode MFCs, sputtered-Co cathodes generated on average the same power as sputtered-Pt cathodes (0.27mWcell -1) and only 27% less than conventional Pt-ink cathodes with a catalyst load 5 times higher (0.5mgcm -2). Finally, microscopy and molecular analyses showed evidence of biocatalysis activity on metal-free cathodes. © 2011 Elsevier B.V.
Source Title: Biosensors and Bioelectronics
ISSN: 09565663
DOI: 10.1016/j.bios.2011.10.009
Appears in Collections:Staff Publications

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