Journal
SMALL
Volume 17, Issue 6, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/smll.202007264
Keywords
carbon; cobalt; electrocatalysis; high voltage; oxygen reduction; supported catalysts
Categories
Funding
- National Key R&D Program of China [2017YFA0700104, 2018YFA0702001]
- National Natural Science Foundation of China [21871238]
- China Postdoctoral Science Foundation [2019M662163]
- Fundamental Research Funds for the Central Universities [WK2060000016]
- Youth Innovation Promotion Association of the Chinese Academy of Sciences [2018494]
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The study presents an electric flash strategy for the rapid fabrication of carbon-supported atomically dispersed metal catalysts (ADMCs) within 1 minute, showing promising catalytic performance. This research paves the way for the rapid synthesis of carbon-supported ADMCs at low cost and mass production.
Developing a rapid and low cost approach to access atomically dispersed metal catalysts (ADMCs) supported by carbon is important but still challenging. Here, an electric flash strategy using high voltage for the rapid fabrication of carbon-supported ADMCs within 1 min is reported. Continuous plasma arc results in nitrogen-doped carbon ultrathin nanosheets, while an intermittent spark pulse constructs carbon hollow nanospheres via blasting effect, and both structures are decorated with atomically dispersed cobalt. The latter catalyst shows a half-wave potential of 0.887 V versus RHE (47 mV higher than commercial Pt/C) in an oxygen reduction reaction (ORR) in alkaline media. The authors' work paves the way to rapid synthesis of carbon-supported ADMCs at both low cost and mass production.
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