Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 884, Issue -, Pages -Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2021.160980
Keywords
Electrode materials; Transition metal alloys and compounds; Chemical synthesis; Catalysis
Categories
Funding
- Science and Technology Program of Jiangxi Province in China [20192BAB216015]
- Science and Technology Program of Education Department of Jiangxi Province in China [GJJ180464, GJJ171499]
- Scientific Research Foundation of Jiangxi University of Science and Technology [jxxjbs17057]
- Key Research and Development Programs of Science and Technology Project of Ganzhou City [[2018] 50]
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In this study, urea was used to synthesize nitrogen-rich iron-nitrogen-carbon catalysts, showing high catalytic activity and stability in the oxygen reduction reaction. The catalyst exhibited a high specific surface area and surface defects, making it promising for metal-air battery applications.
Metal-air batteries have shown tremendous potential as devices for electrical energy storage and conversion; however, their commercial applications are limited owing to the high costs of precious metal catalysts. In this study, urea was employed as a dispersant and as an additional nitrogen source to synthesize zeolitic imidazolate framework-derived iron-nitrogen-carbon catalysts (ZIF-8-derived Fe-NCs). The fabricated nitrogen-rich catalyst was found to have a high specific surface area and numerous surface defects, while maintaining the original ZIF-8 morphology. Electrochemical analysis with a rotating ring-disk electrode revealed that the onset potential of nitrogen-rich Fe-NC was 0.91 V at 1600 rpm with a limiting current density of 5.38 mAmiddotcm-2, which indicated a high catalytic activity for the oxygen reduction reaction. Additionally, the decent stability of the catalyst was confirmed by a 2 h cycle test. (c) 2021 Elsevier B.V. All rights reserved.
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