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Rapid Controllable Synthesis of Atomically Dispersed Co on Carbon under High Voltage within One Minute
Author(s) -
Du Junyi,
Wu Geng,
Liang Kuang,
Yang Jia,
Zhang Yida,
Lin Yue,
Zheng Xusheng,
Yu ZhenQiang,
Wu Yuen,
Hong Xun
Publication year - 2021
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.202007264
Subject(s) - materials science , carbon fibers , catalysis , cobalt , fabrication , chemical engineering , nanotechnology , oxygen reduction reaction , oxygen , electrode , electrochemistry , metallurgy , organic chemistry , composite material , chemistry , pathology , medicine , alternative medicine , composite number , engineering
Abstract 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.