期刊
JOURNAL OF MATERIALS CHEMISTRY A
卷 3, 期 34, 页码 17866-17873出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5ta03523f
关键词
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资金
- National Natural Science Foundation of China [21271005, 91122025, 21471114]
- State Major Research Plan (973) of China [2011CB932404]
- Project of Anhui University [02303203-0054]
- Anhui University for Students [KYXL 2012027]
- College Students' Innovation and Entrepreneurship Training Project [J18515020]
Electrocatalysts for the oxygen reduction reaction (ORR) in acidic media are crucial in proton-exchange membrane (PEM) fuel cells and other electrochemical devices. Achieving ideal ORR activity and durability in acidic media remains a challenge. Here, we developed a new NFeCo-CNT/NC nanocomposite electrocatalyst from the highly available and recyclable plant biomass Typha orientalis using a readily scalable approach. The electrocatalyst exhibits excellent ORR activity, superior stability and tolerance to methanol poisoning effects in acidic media. The value of the onset potential and half-peak potential of the typical product is only 70 mV and 65 mV less than that of Pt/C, respectively. The NFeCo-CNT and NFeCo-NC in the nanocomposite have synergistically enhanced ORR activities. The catalyst may have practical applications in fuel cells. One of the important accomplishments of this work is the discovery that trace Fe3+ and Co2+ can synergistically catalyze the growth of the carbon nanotubes when melamine serves as the CNT precursor.
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