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Open AccessFeature PaperArticle

Binary Nitrogen Precursor-Derived Porous Fe-N-S/C Catalyst for Efficient Oxygen Reduction Reaction in a Zn-Air Battery

1
Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China
2
University of the Chinese Academy of Sciences, Beijing 100039, China
*
Authors to whom correspondence should be addressed.
Catalysts 2018, 8(4), 158; https://doi.org/10.3390/catal8040158
Received: 2 March 2018 / Revised: 16 March 2018 / Accepted: 19 March 2018 / Published: 13 April 2018
It is still a challenge to synthesize non-precious-metal catalysts with high activity and stability for the oxygen reduction reaction (ORR) to replace the state-of-the art Pt/C catalyst. Herein, a Fe, N, S co-doped porous carbon (Fe-NS/PC) is developed by using g-C3N4 and 2,4,6-tri(2-pyridyl)-1,3,5-triazine (TPTZ) as binary nitrogen precursors. The interaction of binary nitrogen precursors not only leads to the formation of more micropores, but also increases the doping amount of both iron and nitrogen dispersed in the carbon matrix. After a second heat-treatment, the best Fe/NS/C-g-C3N4/TPTZ-1000 catalyst exhibits excellent ORR performance with an onset potential of 1.0 V vs. reversible hydrogen electrode (RHE) and a half-wave potential of 0.868 V (RHE) in alkaline medium. The long-term durability is even superior to the commercial Pt/C catalyst. In the meantime, an assembled Zn-air battery with Fe/NS/C-g-C3N4/TPTZ-1000 as the cathode shows a maximal power density of 225 mW·cm−2 and excellent durability, demonstrating the great potential of practical applications in energy conversion devices. View Full-Text
Keywords: non-precious metal catalyst; oxygen reduction reaction; binary nitrogen precursors; g-C3N4; 2,4,6-tri(2-pyridyl)-1,3,5-triazine non-precious metal catalyst; oxygen reduction reaction; binary nitrogen precursors; g-C3N4; 2,4,6-tri(2-pyridyl)-1,3,5-triazine
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Liu, X.; Chen, C.; Cheng, Q.; Zou, L.; Zou, Z.; Yang, H. Binary Nitrogen Precursor-Derived Porous Fe-N-S/C Catalyst for Efficient Oxygen Reduction Reaction in a Zn-Air Battery. Catalysts 2018, 8, 158.

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