Improved performance of membrane free single-chamber air-cathode microbial fuel cells with nitric acid and ethylenediamine surface modified activated carbon fiber felt anodes
Improved performance of membrane free single-chamber air-cathode microbial fuel cells with nitric acid and ethylenediamine surface modified activated carbon fiber felt anodes
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硝酸和乙二胺表面改性活性炭纤维毡阳极提高无膜单室空气阴极微生物燃料电池的性能
DOI：
10.1016/j.biortech.2010.06.046
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发表时间：
2011-01-01
影响因子：
11.4
通讯作者：
Wu, Jinhua
中科院分区：
文献类型：
--
作者：
Zhu, Nengwu;Chen, Xi;Wu, Jinhua
阳极材料的表面改性对提高微生物燃料电池（MFC）的产电性能具有重要意义。分别以硝酸和乙二胺（EDA）处理的活性炭纤维毡（ACF）为阳极，构建了无膜单室空气阴极MFC（MFC-A和MFC-N）。实验结果表明，MFC-A和MFC-N达到最大电压的启动时间分别比配备未改性阳极的MFC-AT缩短了45%和51%。此外，具有改性阳极的MFC的功率输出显著提高。与最大功率密度为1304 mW/m2的MFC-AT相比，MFC-N的最大功率密度为1641 mW/m2。MFC-A中硝酸处理的阳极使功率密度提高了58%，达到2066 mW/m2。XPS分析结果表明，阳极材料表面官能团的变化是阳极材料功率提高的主要原因。(C)2010爱思唯尔有限公司保留所有权利。
Surface modifications of anode materials are important for enhancing power generation of microbial fuel cell (MFC). Membrane free single-chamber air-cathode MFCs, MFC-A and MFC-N, were constructed using activated carbon fiber felt (ACF) anodes treated by nitric acid and ethylenediamine (EDA), respectively. Experimental results showed that the start-up time to achieve the maximum voltages for the MFC-A and MFC-N was shortened by 45% and 51%, respectively as compared to that for MFC-AT equipped with an unmodified anode. Moreover, the power output of MFCs with modified anodes was significantly improved. In comparison with MFC-AT which had a maximum power density of 1304 mW/m(2), the MFC-N achieved a maximum power density of 1641 mW/m(2). The nitric acid-treated anode in MFC-A increased the power density by 58% reaching 2066 mW/m(2). XPS analysis of the treated and untreated anode materials indicated that the power enhancement was attributable to the changes of surface functional groups. (C) 2010 Elsevier Ltd. All rights reserved.