期刊
CHEMISTRY-AN ASIAN JOURNAL
卷 13, 期 20, 页码 3057-3062出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/asia.201801134
关键词
carbon; cobalt; doping; electrochemistry; template synthesis
资金
- National Natural Science Foundation of China [51802059, 21273058, 21673064]
- China Postdoctoral Science Foundation [2017M621285, 2018T110292, 2018M631938, 2018T110307, 2017M621284]
- Heilongjiang Postdoctoral Fund [LBH-Z17074]
- HIT Environment and Ecology Innovation Special Funds [HSCJ201620]
The oxygen reduction reaction (ORR) in a cathode is an essential component of many electrochemical energy storage and conversion systems. Two-dimensional materials are beneficial for electron conduction and mass transport with high density, showing prominent electrochemical catalytic performance towards the ORR. Herein, a simple NaCl-assisted method to synthesize cobalt-nitrogen-doped carbon materials (CoNC), which present prominent performance towards the ORR in alkaline media, is described. The utilization of the NaCl template endows the product with a large specific surface area of 556.4m(2)g(-1), as well as good dispersion of cobalt nanoparticles. CoNC-800@NaCl (800 indicates the calcination temperature in degrees C) displays an excellent onset potential of 0.94V (vs. a reversible hydrogen electrode), which is close to that of commercial Pt/C. Additionally, CoNC-800@NaCl also exhibits better long-term durability and methanol tolerance than that of Pt/C. The high-performance CoNC-800@NaCl catalyst provides a hopeful alternative to noble-metal catalysts for the ORR in practical applications.
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