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Effect of nitrogen addition on the performance of microbial fuel cell anodes. |
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Τετάρτη, 13 Οκτώβριος 2010 09:50 |
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Authors: Saito T, Mehanna M, Wang X, Cusick RD, Feng Y, Hickner MA, Logan BE
Carbon cloth anodes were modified with 4(N,N-dimethylamino)benzene diazonium tetrafluoroborate to increase nitrogen-containing functional groups at the anode surface in order to test whether the performance of microbial fuel cells (MFCs) could be improved by controllably modifying the anode surface chemistry. Anodes with the lowest extent of functionalization, based on a nitrogen/carbon ratio of 0.7 as measured by XPS, achieved the highest power density of 938 mW/m(2). This power density was 24% greater than an untreated anode, and similar to that obtained with an ammonia gas treatment previously shown to increase power. Increasing the nitrogen/carbon ratio to 3.8, however, decreased the power density to 707 m...
Source: www.medworm.com
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