Journal
APPLIED CATALYSIS B-ENVIRONMENTAL
Volume 244, Issue -, Pages 197-205Publisher
ELSEVIER
DOI: 10.1016/j.apcatb.2018.11.005
Keywords
Iron-based catalyst; Prussian blue analogue; Carbon encapsuled metal/metal carbide; Oxygen reduction reaction; Zinc-air battery
Funding
- National Natural Science Foundation of China [11575084, 51602153]
- Natural Science Foundation of Jiangsu Province [BK20160795]
- Funding of Jiangsu Innovation Program for Graduate Education [KYCX17_0250]
- Funding for Outstanding Doctoral Dissertation in NUAA [BCXJ17-09]
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
- Nanjing University of Aeronautics and Astronautics PhD Short-term Visiting Scholar Project
Ask authors/readers for more resources
We fabricated a highly effective oxygen reduction reaction (ORR) catalyst consisting of Fe/Fe5C2 species wrapped in N-doped carbon (Fe/Fe5C2@N-C), derived from annealing decomposition of a zinciferous Prussian blue analogue Zn-3[Fe(CN)(6)](2), which can be prepared through a facile precipitation reaction. The rationally designed carbon layer-encapsulated structure with iron/iron carbide encased inside the N-doped graphitic carbon shells is favorable for ORR, wherein the iron species not only facilitate the graphitization process but also improve the ORR activity together with outside N-doped graphic carbon. The resultant catalyst demonstrates a positive half-wave potential (E-1/2) of 0.85 V (vs. RHE) and a nearly four-electron pathway in 0.1 M KOH solution, comparable to that of the commercial Pt/C. With superior stability to that of Pt/C, Fe/Fe5C2@N-C suffers almost no performance attenuation after 5000 potential cycles. The zinc-air battery using Fe/Fe5C2@N-C catalyst exhibits high power density and capacity, holding great promise for the practical application of metal-air batteries.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available