Power generation using an activated carbon and metal mesh cathode in a microbial fuel cell
Power generation using an activated carbon and metal mesh cathode in a microbial fuel cell
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DOI：
10.1016/j.elecom.2009.09.024
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发表时间：
2009-11
影响因子：
5.4
通讯作者：
Fang Zhang;Shaoan Cheng;D. Pant;G. V. Bogaert;B. Logan
中科院分区：
文献类型：
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作者：
Fang Zhang;Shaoan Cheng;D. Pant;G. V. Bogaert;B. Logan
开发了一种廉价的活性炭空气阴极，用于微生物燃料电池（MFC）中的氧还原。AC与聚四氟乙烯（PTFE）粘合剂一起冷压以在Ni网集电器周围形成阴极。这种阴极构造避免了对碳布或金属催化剂的需要，并且产生了在典型的MFC电流密度下具有高氧还原活性的阴极。与Pt催化的碳布阴极获得的1060 mW/m2相比，AC阴极的测试产生了1220 mW/m2的最大功率密度（归一化为阴极投影表面积;基于液体体积的36 W/m3）。库仑效率范围为15%至55%。这些发现表明，AC是一种具有成本效益的材料，用于实现空气阴极MFC中的氧还原的有用速率。
An inexpensive activated carbon (AC) air cathode was developed as an alternative to a platinum-catalyzed electrode for oxygen reduction in a microbial fuel cell (MFC). AC was cold-pressed with a polytetrafluoroethylene (PTFE) binder to form the cathode around a Ni mesh current collector. This cathode construction avoided the need for carbon cloth or a metal catalyst, and produced a cathode with high activity for oxygen reduction at typical MFC current densities. Tests with the AC cathode produced a maximum power density of 1220mW/m2(normalized to cathode projected surface area; 36W/m3based on liquid volume) compared to 1060mW/m2obtained by Pt catalyzed carbon cloth cathode. The Coulombic efficiency ranged from 15% to 55%. These findings show that AC is a cost-effective material for achieving useful rates of oxygen reduction in air cathode MFCs.