Iron carbide and iron phosphide embedded N-doped porous carbon derived from biomass as oxygen reduction reaction catalyst for microbial fuel cell |
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| Affiliation: | 1. Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Green Printing, Institute of Chemistry, Chinese Academy of Sciences, Zhongguancun North First Street 2, Beijing 100190, China;2. University of Chinese Academy of Sciences, Beijing 100049, China;3. Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Engineering Plastics. Institute of Chemistry, Chinese Academy of Sciences, Zhongguancun North First Street 2, Beijing 100190, China |
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| Abstract: | The splendid activity of oxygen reduction reaction (ORR) catalyst can greatly promote the power generation of air cathode microbial fuel cell (AC-MFC). Here, benefiting from the rich P element in radish, Fe3C and Fe2P incorporated N-doped porous carbon (Fe3C/Fe2P@NC-N4Fe2) are prepared with the assistance of NH4Cl through carbothermal reduction method without adding P resources. As expected, Fe3C/Fe2P@NC-N4Fe2 possesses excellent ORR performance, in which Fe3C and Fe2P furnish abundant ORR active sites and the porous structure in N-doped carbon matrix can facilitate mass transfer. Moreover, the AC-MFC assembled with Fe3C/Fe2P@NC-N4Fe2 as cathodic ORR catalyst exhibits superior power output performance with the maximum power density of 948.9 mW m?2, which is 1.03 times of that of 20 wt% Pt/C catalyst. Therefore, Fe3C/Fe2P@NC-N4Fe2 should be a viable ORR catalyst to replace Pt/C catalyst in the application in AC-MFC. |
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| Keywords: | Biomass Air cathode microbial fuel cell Activator Carbothermal reduction Oxygen reduction reaction |
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