Hierarchically Three-Dimensional Nanofiber Based Textile with High Conductivity and Biocompatibility As a Microbial Fuel Cell Anode

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• 作者：Yifei Tao ; Qiongzhen Liu ; Jiahui Chen ; Bo Wang ; Yuedan Wang ; Ke Liu ; Mufang Li ; Haiqing Jiang ; Zhentan Lu ; Dong Wang
• 刊名：Environmental Science & Technology
• 出版年：2016
• 出版时间：July 19, 2016
• 年：2016
• 卷：50
• 期：14
• 页码：7889-7895
• 全文大小：585K
• 年卷期：0
• ISSN：1520-5851

文摘

Microbial fuel cells (MFCs) encompass complex bioelectrocatalytic reactions that converting chemical energy of organic compounds to electrical energy. Improving the anode configuration is thought to be a critical step for enhancing MFCs performance. In present study, a hierarchically structured textile polypyrrole/poly(vinyl alcohol-co-polyethylene) nanofibers/poly(ethylene terephthalate) (referred to PPy/NFs/PET) is shown to be excellent anode for MFCs. This hierarchical PPy/NFs/PET anode affords an open porous and three-dimensional interconnecting conductive scaffold with larger surface roughness, facilitating microbial colonization and electron transfer from exoelectrogens to the anode. The mediator-less MFC equipped with PPy/NFs/PET anode achieves a remarkable maximum power density of 2420 mW m^–2 with Escherichia coli as the microbial catalyst at the current density of 5500 mA m^–2, which is approximately 17 times higher compared to a reference anode PPy/PET (144 mW m^–2). Considering the low cost, low weight, facile fabrication, and good winding, this PPy/NFs/PET textile anode promises a great potential for high-performance and cost-effective MFCs in a large scale.