期刊
MATERIALS
卷 14, 期 9, 页码 -出版社
MDPI
DOI: 10.3390/ma14092146
关键词
fuel cells; oxygen reduction reaction; iron sulfide; carbon nanotube– graphene composites; N; S dual doping
类别
资金
- R&D Program for Forest Science Technology by Korea Forest Service (Korea Forestry Promotion Institute) [FTIS2020216B10-2022-AC01]
- National Research Foundation of Korea (NRF) - Korea government (Ministry of Education) [2019R1I1A3A01052741]
- Climate Change Response Project [NRF-2019M1A2A2065612]
- Korea-China Key Joint Research Program [2017K2A9A2A11070341]
- [NRF-2018R1A2A1A05077909]
- National Research Foundation of Korea [2019R1I1A3A01052741] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
The nanostructured FeS dispersed onto N, S dual-doped carbon nanotube-graphene composite support showed significantly enhanced electrochemical performance in the oxygen reduction reaction (ORR). This improvement could be attributed to the synergy between the small FeS nanoparticles and the N, S-doped carbon nanotube-graphene composite support, providing high electrical conductivity, large surface area, and additional active sites. The FeS/N,S:CNT-GR catalyst exhibited a small half-wave potential of 0.827V in an alkaline electrolyte, comparable to that of commercial Pt/C.
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 N-2 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.
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