Three-dimensional high performance free-standing anode by one-step carbonization of pinecone in microbial fuel cells
Three-dimensional high performance free-standing anode by one-step carbonization of pinecone in microbial fuel cells
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松果一步碳化制备三维高性能自支撑微生物燃料电池阳极
DOI：
10.1016/j.biortech.2019.121956
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发表时间：
2019
影响因子：
11.4
通讯作者：
Guo Chongshen
中科院分区：
文献类型：
--
作者：
Wang Ruiwen;Liu Da;Yan Mei;Zhang Lu;Chang Wen;Sun Ziyu;Liu Shaoqin;Guo Chongshen
本文以松果为原料，采用一步炭化法制备了自立式大孔炭阳极，并对其性能进行了研究。得到的阳极是N，P共掺杂的多孔炭材料，有利于电化学活性细菌的黏附和电池的快速启动。所得阳极的输出电压和长期运行稳定性均高于碳毡。生物膜形成后的电荷转移电阻仅为1.4 Ω，比炭毡阳极低85.1%。16S rRNA基因序列分析表明，土杆菌是主要的电子诱导物，其在阳极处的比例(77.4%)远高于在碳毡上的比例(34.0%)。N，P共掺杂碳作为三维自支撑阳极具有优异的电化学性能，且成本低、制备简单。最重要的是，它增强了胞外电子传递，因此在微生物燃料电池中具有潜在的应用前景。
In this paper, the free-standing macroporous carbon anode is prepared by one-step carbonization of pinecone without any further modification. The obtained anode is N, P-codoped porous carbon material, which is beneficial for electrochemical active bacterial adhesion and the fast start-up of cells. Both of the output voltage and long-term operation stability of the obtained anode are higher than that of carbon felt. The charge transfer resistance after biofilm formation is only 1.4 Ω, being 85.1% lower than that of carbon felt anode. 16S rRNA gene sequence analysis shows thatGeobactersoliis the main electricigen and its ratio at the obtained anode is much higher than that at carbon felt (77.4%vs34.0%). The N, P-codoped carbon as the three-dimensional free-standing anode has excellent electrochemical properties and is low cost and easy preparation. Most importantly, it enhances extracellular electron transfer, thus has potential application in microbial fuel cells.