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Carbon/iron-based nanorod catalysts for hydrogen production in microbial electrolysis cells

机译：用于微生物电解池中制氢的碳/铁基纳米棒催化剂

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Hydrogen production in microbial electrolysis cells (MECs) is a promising approach for harvesting valuable energy products from organic wastes. Catalysts for proton reduction play a central role in decreasing energy input and increasing hydrogen production rates. Here, a novel nitrogen-containing core-shell-structured catalyst N-Fe/Fe_3C@C was prepared and used to modify cathode electrodes in an MEC. The new catalyst consists of iron-based composite (Fe/Fe_3C) nanorods as the core and graphite carbon as the shell. The performance of hydrogen production and catalyst stability were investigated. The new catalyst significantly improved hydrogen production compared with unmodified cathode and carbon nanotubes. Although not as efficient as platinum catalysts, a great advantage of the N-Fe/Fe_3C@C is its extremely low cost (less than 5% of the Pt/C catalyst), suggesting its promise for large-scale MEC applications.
机译：微生物电解池（MEC）中的氢气生产是一种从有机废物中收集有价值的能源产品的有前途的方法。减少质子的催化剂在减少能量输入和提高氢气产生率方面起着核心作用。在此，制备了一种新型的含氮核壳结构催化剂N-Fe / Fe_3C @ C，并用于修饰MEC中的阴极。新型催化剂由铁基复合材料（Fe / Fe_3C）纳米棒为核，石墨碳为壳。研究了制氢性能和催化剂稳定性。与未经修饰的阴极和碳纳米管相比，这种新型催化剂显着提高了氢气的产生。尽管N-Fe / Fe_3C @ C效率不如铂催化剂，但其极低的成本（不到Pt / C催化剂的5％）非常便宜，这表明它有望用于大规模的MEC应用。

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