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Article

Nanostructured Iron Sulfide/N, S Dual-Doped Carbon Nanotube-Graphene Composites as Efficient Electrocatalysts for Oxygen Reduction Reaction

1
Division of Environmental Science and Engineering, Pohang University of Science and Technology (POSTECH), Pohang 37673, Korea
2
Interdisciplinary Program in Advanced Functional Materials and Devices Development, Department of Chemical Engineering, Kangwon National University, Chuncheon, Gangwon-do 24341, Korea
3
School of Energy & Chemical Engineering, Ulsan National University of Science and Technology (UNIST), Ulsan 44919, Korea
*
Authors to whom correspondence should be addressed.
Academic Editor: Sergio Morales-Torres
Materials 2021, 14(9), 2146; https://doi.org/10.3390/ma14092146
Received: 11 April 2021 / Revised: 20 April 2021 / Accepted: 20 April 2021 / Published: 23 April 2021
(This article belongs to the Special Issue Advances in Nanostructured Catalysts)
Nanostructured FeS dispersed onto N, S dual-doped carbon nanotube–graphene composite support (FeS/N,S:CNT–GR) was prepared by a simple synthetic method. Annealing an ethanol slurry of Fe precursor, thiourea, carbon nanotube, and graphene oxide at 973 K under N2 atmosphere and subsequent acid treatment produced FeS nanoparticles distributed onto the N, S-doped carbon nanotube–graphene support. The synthesized FeS/N,S:CNT–GR catalyst exhibited significantly enhanced electrochemical performance in the oxygen reduction reaction (ORR) compared with bare FeS, FeS/N,S:GR, and FeS/N,S:CNT with a small half-wave potential (0.827 V) in an alkaline electrolyte. The improved ORR performance, comparable to that of commercial Pt/C, could be attributed to synergy between the small FeS nanoparticles with a high activity and the N, S-doped carbon nanotube–graphene composite support providing high electrical conductivity, large surface area, and additional active sites. View Full-Text
Keywords: fuel cells; oxygen reduction reaction; iron sulfide; carbon nanotube–graphene composites; N, S dual doping fuel cells; oxygen reduction reaction; iron sulfide; carbon nanotube–graphene composites; N, S dual doping
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MDPI and ACS Style

Chae, G.S.; Youn, D.H.; Lee, J.S. Nanostructured Iron Sulfide/N, S Dual-Doped Carbon Nanotube-Graphene Composites as Efficient Electrocatalysts for Oxygen Reduction Reaction. Materials 2021, 14, 2146. https://doi.org/10.3390/ma14092146

AMA Style

Chae GS, Youn DH, Lee JS. Nanostructured Iron Sulfide/N, S Dual-Doped Carbon Nanotube-Graphene Composites as Efficient Electrocatalysts for Oxygen Reduction Reaction. Materials. 2021; 14(9):2146. https://doi.org/10.3390/ma14092146

Chicago/Turabian Style

Chae, Gyu S., Duck H. Youn, and Jae S. Lee. 2021. "Nanostructured Iron Sulfide/N, S Dual-Doped Carbon Nanotube-Graphene Composites as Efficient Electrocatalysts for Oxygen Reduction Reaction" Materials 14, no. 9: 2146. https://doi.org/10.3390/ma14092146

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