Alfalfa Leaf-Derived Porous Heteroatom-Doped Carbon Materials as Efficient Cathodic Catalysts in Microbial Fuel Cells
Alfalfa Leaf-Derived Porous Heteroatom-Doped Carbon Materials as Efficient Cathodic Catalysts in Microbial Fuel Cells
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DOI：
10.1021/acssuschemeng.7b01585
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发表时间：
2017-09
影响因子：
8.4
通讯作者：
Lifang Deng;Yong Yuan;Yuyuan Zhang;Yazhuo Wang;Yong Chen;Haoran Yuan;Ying Chen
中科院分区：
文献类型：
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作者：
Lifang Deng;Yong Yuan;Yuyuan Zhang;Yazhuo Wang;Yong Chen;Haoran Yuan;Ying Chen
以苜蓿叶为原料合成了高比表面积的杂原子掺杂层状碳材料，并将其用作阴极催化剂，以提高微生物燃料电池（MFC）的输出功率。采用不同的化学活化剂对苜蓿叶炭进行活化处理。结果表明，不同的化学活化剂对苜蓿叶炭材料在MFC的功率输出和氧还原反应（ORR）中的催化活性有显著影响。KOH活化的ALC材料（ALC-K）比FeCl_3（ALC-Fe）或ZnCl_2（ALC-Zn）活化的材料具有更好的电化学活性。用ALC-K作为阴极催化剂，可以看到高的极限电流密度和优异的长期稳定性，这给出了比Pt/C更上级的结果。此外，从配备有ALC-K阴极的MFC获得约1328.9 mW/m2的最大功率密度，提供与Pt/C阴极相当的性能特性。
Heteroatom-doped lamellar-structured carbon with a high surface area synthesized from alfalfa leaves is utilized as a cathode catalyst in this study to improve the power output of microbial fuel cells (MFCs). Different chemical activation agents are used to treat alfalfa leaf-derived carbon (ALC). It is found that chemical activation agents substantially affect the catalytic activities of the alfalfa leaf-derived carbon materials in the power output of MFCs and the oxygen reduction reaction (ORR). ALC materials activated by KOH (ALC-K) exhibit the best electrochemical activity compared with those of materials activated by FeCl3 (ALC-Fe) or ZnCl2 (ALC-Zn). A high limiting current density and excellent long-term stability can be seen with ALC-K as the cathode catalyst, which gives superior results to those of Pt/C. Moreover, a maximum power density of approximately 1328.9 mW/m2 is obtained from an MFC equipped with an ALC-K cathode, offering performance characteristics comparable to those of a Pt/C cathode ...