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Nitrogen‐enriched core–shell structured Fe/Fe3C–C (N–Fe/Fe3C@C) nanorods have been successfully synthesized and demonstrated as promising oxygen reduction reaction catalysts with high activity and improved kinetics. The N–Fe/Fe3C@C nanorods, when used as cathode catalysts in microbial fuel cells, outperform the commercial Pt/C‐based cathode at the maximum power output. Both N‐dopant and core–Fe3C...
A cost‐effective route for the preparation of Fe3C‐based core‐shell structured catalysts for oxygen reduction reactions was developed. The novel catalysts generated a much higher power density (i.e., three times higher at Rex of 1 Ω) than the Pt/C in microbial fuel cells. Furthermore, the N‐Fe/Fe3C@C features an ultralow cost and excellent long‐term stability suitable for mass production.
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