ENHANCEMENT OF MICROBIAL FUEL CELL PERFORMANCE BY Fe-S-N CO-DOPED POROUS CARBON CATHODE CATALYST

TANG Xin-hua; JIA Yu-yang; CUI Yang; CHEN Mo-yu; LIU Lei

doi:10.13205/j.hjgc.202110023

Volume 39 Issue 10

Jan. 2022

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Article Navigation > ENVIRONMENTAL ENGINEERING > 2021 > 39(10): 163-170

TANG Xin-hua, JIA Yu-yang, CUI Yang, CHEN Mo-yu, LIU Lei. ENHANCEMENT OF MICROBIAL FUEL CELL PERFORMANCE BY Fe-S-N CO-DOPED POROUS CARBON CATHODE CATALYST[J]. ENVIRONMENTAL ENGINEERING , 2021, 39(10): 163-170. doi: 10.13205/j.hjgc.202110023

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TANG Xin-hua, JIA Yu-yang, CUI Yang, CHEN Mo-yu, LIU Lei. ENHANCEMENT OF MICROBIAL FUEL CELL PERFORMANCE BY Fe-S-N CO-DOPED POROUS CARBON CATHODE CATALYST[J]. ENVIRONMENTAL ENGINEERING , 2021, 39(10): 163-170. doi: 10.13205/j.hjgc.202110023

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ENHANCEMENT OF MICROBIAL FUEL CELL PERFORMANCE BY Fe-S-N CO-DOPED POROUS CARBON CATHODE CATALYST

doi: 10.13205/j.hjgc.202110023

School of Civil Engineering and Architecture, Wuhan University of Technology, Wuhan 430070, China

Received Date: 2020-12-12
Available Online: 2022-01-26

Abstract

Abstract

FeSN-Ccomposite catalytic material was prepared by hydration-pyrolyzation-carbonization using baycherry as a biomass and Fe₂(SO₄)₃ as the doping source. FeSN-C composite catalytic material was characterized and applied as a cathode of microbial fuel cells (MFC) to drive the oxygen reduction reaction(ORR). The results showed that FeSN-C cathode performed well in electricity generation, producing the peak output voltage and power density of 550 mV and 854 mW/m², which were 98.6% and 83.2% of that of commercial platinum carbon (Pt/C),respectively. At the same time, FeSN-C cathode had a small overpotential and high electron transfer number for ORR (n=3.78), dominated by the four electronic transfer reaction process. Further compared to the commercial platinum carbon product, FeSN-C had stronger stability, which was reduced by 17.1% in the current attenuation test, lower than 23.5% of the Pt/C cathode. The doping of Fe, S and N atoms led to a large collapse of the carbon skeleton, where more active sites were exposed. Meanwhile, the synergy between Fe, S, N was the key to improve the ORR of the cathode.
- microbial fuel cells,
- cathode catalyst,
- power density,
- active site,
- oxygen reduction reaction

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References(25)

References

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