期刊
BIORESOURCE TECHNOLOGY
卷 102, 期 22, 页码 10459-10464出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2011.08.123
关键词
Microbial fuel cells; Oxygen reduction reaction; Cathode catalyst; Manganese-cobalt oxide; Power generation
This study focused on the use of spinel manganese-cobalt (Mn-Co) oxide, prepared by a solid state reaction, as a cathode catalyst to replace platinum in microbial fuel cells (MFCs) applications. Spinel Mn-Co oxides, with an Mn/Co atomic ratios of 0.5, 1, and 2, were prepared and examined in an air cathode MFCs which was fed with a molasses-laden synthetic wastewater and operated in batch mode. Among the three Mn-Co oxide cathodes and after 300 h of operation, the Mn-Co oxide catalyst with Mn/Co atomic ratio of 2 (MnCo-2) exhibited the highest power generation 113 mW/m(2) at cell potential of 279 mV, which were lower than those for the Pt catalyst (148 mW/m(2) and 325 mV, respectively). This study indicated that using spinet Mn-Co oxide to replace platinum as a cathodic catalyst enhances power generation, increases contaminant removal, and substantially reduces the cost of MFCs. (C) 2011 Elsevier Ltd. All rights reserved.
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