Santoro Carlo, Serov Alexey, Narvaez Villarrubia Claudia W, Stariha Sarah, Babanova Sofia, Schuler Andrew J, Artyushkova Kateryna, Atanassov Plamen
Center for Emerging Energy Technologies, The University of New Mexico, 1 University of New Mexico-MSC01 1120, Albuquerque, NM 87131 (USA).
ChemSusChem. 2015 Mar;8(5):828-34. doi: 10.1002/cssc.201402570. Epub 2015 Jan 21.
Non-Pt-group metal (non-PGM) materials based on transition metal-nitrogen-carbon (M-N-C) and derived from iron salt and aminoantipyrine (Fe-AAPyr) of mebendazole (Fe-MBZ) were studied for the first time as cathode catalysts in double-chamber microbial fuel cells (DCMFCs). The pH value of the cathode chamber was varied from 6 to 11 to elucidate the activity of those catalysts in acidic to basic conditions. The Fe-AAPyr- and Fe-MBZ-based cathodes were compared to a Pt-based cathode used as a baseline. Pt cathodes performed better at pH 6-7.5 and had similar performances at pH 9 and a substantially lower performance at pH 11 at which Fe-AAPyr and Fe-MBZ demonstrated their best electrocatalytic activity. The power density achieved with Pt constantly decreased from 94-99 μW cm(-2) at pH 6 to 55-57 μW cm(-2) at pH 11. In contrast, the power densities of DCMFs using Fe-AAPyr and Fe-MBZ were 61-68 μW cm(-2) at pH 6, decreased to 51-58 μW cm(-2) at pH 7.5, increased to 65-75 μW cm(-2) at pH 9, and the highest power density was achieved at pH 11 (68-80 μW cm(-2) ). Non-PGM cathode catalysts can be manufactured at the fraction of the cost of the Pt-based ones. The higher performance and lower cost indicates that non-PGM catalysts may be a viable materials choice in large-scale microbial fuel cells.
首次研究了基于过渡金属 - 氮 - 碳（M - N - C）且由甲苯达唑的铁盐和氨基安替比林（Fe - AAPyr）衍生而来的非铂族金属（non - PGM）材料（Fe - MBZ）作为双室微生物燃料电池（DCMFCs）阴极催化剂的性能。改变阴极室的pH值从6到11，以阐明这些催化剂在酸性到碱性条件下的活性。将基于Fe - AAPyr和Fe - MBZ的阴极与用作基线的基于Pt的阴极进行比较。Pt阴极在pH 6 - 7.5时表现更好，在pH 9时性能相似，而在pH 11时性能大幅下降，此时Fe - AAPyr和Fe - MBZ表现出最佳的电催化活性。Pt阴极的功率密度从pH 6时的94 - 99 μW cm⁻²持续下降到pH 11时的55 - 57 μW cm⁻²。相比之下，使用Fe - AAPyr和Fe - MBZ的DCMFCs的功率密度在pH 6时为61 - 68 μW cm⁻²，在pH 7.5时降至51 - 58 μW cm⁻²，在pH 9时升至65 - 75 μW cm⁻²，并且在pH 11时达到最高功率密度（68 - 80 μW cm⁻²）。非铂族金属阴极催化剂的制造成本仅为基于Pt的催化剂的一小部分。更高的性能和更低的成本表明，非铂族金属催化剂可能是大规模微生物燃料电池中一种可行的材料选择。
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