A new method for fabrication of graphene/polyaniline nanocomplex modified microbial fuel cell anodes
A new method for fabrication of graphene/polyaniline nanocomplex modified microbial fuel cell anodes
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DOI：
10.1016/j.jpowsour.2012.09.091
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发表时间：
2013-02-15
影响因子：
9.2
通讯作者：
Zhang, Peiyuan
中科院分区：
文献类型：
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作者：
Hou, Junxian;Liu, Zhongliang;Zhang, Peiyuan
通过电化学还原氧化石墨烯（ERGNO），在碳布（CC）表面包覆聚苯胺（PANI）纳米纤维，制备了一种新型微生物燃料电池（MFC）阳极。ERGNO/CC是使用电化学合成方法在磷酸盐缓冲溶液（PBS，pH = 6.9）中通过循环伏安法（CV）还原氧化石墨烯来制备的。结合PANI和ERGNO的优点，PANI-ERGNO/CC作为MFC阳极时，最大功率密度为1390 mW m（-2），是CC阳极MFC的3倍。通过扫描电子显微镜（SEM）和拉曼光谱对电极进行表征。用循环伏安法和电化学阻抗谱（EIS）研究了其电化学活性.这主要是由于石墨烯不仅作为高导电性的载体材料，而且为聚苯胺提供了较大的比表面积。高电导率和大比表面积大大提高了电荷转移效率和细菌生物膜负载。在这项工作中，开发了一种实用且有前途的合成方法来制备高性能的MFC阳极。(C)2012爱思唯尔有限公司版权所有。
A novel microbial fuel cell (MFC) anode is fabricated by electrochemically reducing graphene oxide (ERGNO) first and coating polyaniline (PANI) nano-fibers afterward on the surface of carbon cloth (CC). ERGNO/CC is prepared using an electrochemical synthesis method reducing graphene oxide by cyclic voltammetry (CV) in phosphate buffer solution (PBS, pH = 6.9). Combining the advantages of PANI and ERGNO, PANI-ERGNO/CC yields a maximum power density of 1390 mW m(-2) when used as the MFC anode, which is 3 times larger than that of the MFC with the CC anode. The electrodes are characterized by scanning electron microscopy (SEM) and Raman spectroscopy. The electrochemical activities have been investigated by CV and electrochemical impedance spectroscopy (EIS). The great improvement is attributed to the fact that graphene not only serves as a highly conductive support material, but also provides large surface for PANI. High conductivity and large specific surface area greatly improve the charge transfer efficiency and the bacterial biofilm loading. In this work, a practical and promising synthesis method is developed to fabricate high-performance MFC anodes. (C) 2012 Elsevier B.V. All rights reserved.