Boosting Power Density of Microbial Fuel Cells with 3D Nitrogen-Doped Graphene Aerogel Electrode.
Boosting Power Density of Microbial Fuel Cells with 3D Nitrogen-Doped Graphene Aerogel Electrode.
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利用 3D 氮掺杂石墨烯气凝胶电极提高微生物燃料电池的功率密度
DOI：
10.1002/advs.201600097
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发表时间：
2016-08
期刊：
影响因子：
15.1
通讯作者：
Li, Yat
中科院分区：
文献类型：
--
作者：
Yang, Yang;Liu, Tianyu;Zhu, Xun;Zhang, Feng;Ye, Dingding;Liao, Qiang;Li, Yat
报道了一种用于微生物燃料电池（MFC）的三维氮掺杂石墨烯气凝胶（N-GA）阳极材料。电子显微镜图像显示，N-GA具有分级多孔结构，允许细菌细胞和电子介质在3D电极的内部空间中有效扩散，从而实现细菌群落的定殖。电化学阻抗谱测量进一步表明，氮掺杂显着降低电荷转移电阻和GA的内阻，这有助于提高MFC的功率密度。重要的是，采用N-GA阳极的双室毫升级MFC产生了225 ± 12 W m−3的出色体积功率密度，标准化为阳极室的总体积（标准化为阳极体积的750 ± 40 W m−3）。这些功率密度是在类似测量条件下具有类似腔室尺寸（25 mL）的毫升级MFC报告的最高值。3D N-GA电极显示出改善MFC装置发电的巨大前景。
A 3D nitrogen‐doped graphene aerogel (N‐GA) as an anode material for microbial fuel cells (MFCs) is reported. Electron microscopy images reveal that the N‐GA possesses hierarchical porous structure that allows efficient diffusion of both bacterial cells and electron mediators in the interior space of 3D electrode, and thus, the colonization of bacterial communities. Electrochemical impedance spectroscopic measurements further show that nitrogen doping considerably reduces the charge transfer resistance and internal resistance of GA, which helps to enhance the MFC power density. Importantly, the dual‐chamber milliliter‐scale MFC with N‐GA anode yields an outstanding volumetric power density of 225 ± 12 W m−3 normalized to the total volume of the anodic chamber (750 ± 40 W m−3 normalized to the volume of the anode). These power densities are the highest values report for milliliter‐scale MFCs with similar chamber size (25 mL) under the similar measurement conditions. The 3D N‐GA electrode shows great promise for improving the power generation of MFC devices.
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影响因子：
15
作者：
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通讯作者：
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