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Open Air Biocathode Enables Effective Electricity Generation with Microbial Fuel Cells

机译:露天生物阴极可利用微生物燃料电池有效发电

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The reduction of oxygen at the cathode is one of the major bottlenecks of microbial fuel cells (MFCs). While research so far has mainly focused on chemical catalysis of this oxygen reduction, here we present a continuously wetted cathode with microorganisms that act as biocatalysts for oxygen reduction. We combined the anode of an acetate oxidizing tubular microbial fuel cell with an open air biocathode for electricity production. The maximum power production was 83 ± 11W m~(-3) MFC (0.183 LMFC) for batch-fed systems (20-40% Coulombic yield) and 65 ± 5 W m~(-3) MFC for a continuous system with an acetate loading rate of 1.5 kg COD m~(-3) day~(-1) (90 ± 3% Coulombic yield).
机译:阴极处的氧气还原是微生物燃料电池(MFC)的主要瓶颈之一。尽管迄今为止的研究主要集中在这种氧还原的化学催化上,但在此我们展示了一种连续不断地湿润的阴极,其中微生物充当了氧还原的生物催化剂。我们将乙酸盐氧化的管状微生物燃料电池的阳极与露天的生物阴极结合在一起发电。对于批量进料系统(库仑产率为20-40%),最大发电量为83±11W m〜(-3)MFC(0.183 LMFC),对于连续运行的系统,其最大功率为65±5 W m〜(-3)MFC。醋酸盐负荷率为1.5 kg COD m〜(-3)天〜(-1)(90±3%库仑产率)。

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