期刊
CHEMSUSCHEM
卷 13, 期 5, 页码 938-944出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cssc.201903293
关键词
carbon nanotubes; electrochemistry; fuel cells; oxygen reduction reaction; waste plastics
资金
- National Key Research and Development Pro-gram of China [2018YFC1901204]
- National Natural Science Foundation of China [51622604, 51806077, 51861130362]
- China Postdoctoral Science Foundation [2018M640696]
- Foundation of the State Key Laboratory of Coal Combustion [FSKLCCA1805]
A novel method for the preparation of iron- and nitrogen-codoped carbon nanotubes (Fe-N-CNTs) is proposed, based on the catalytic pyrolysis of waste plastics. First, carbon nanotubes are produced from pyrolysis of plastic waste over Fe-Al2O3; then, Fe-CNTs and melamine are heated together in an inert atmosphere. Different co-pyrolysis temperatures are tested to optimize the electrocatalyst production. A high doping temperature improves the degree of graphite formation and promotes the conversion of nitrogen into a more stable form. Compared with commercial Pt/C, the electrocatalyst obtained from pyrolysis at 850 degrees C shows remarkable properties, with an onset potential of 0.943 V versus RHE and a half-wave potential of 0.811 V versus RHE, and even better stability and anti-poisoning properties. In addition, zinc-air battery tests are performed, and the optimized catalyst exhibits a high maximum power density.
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