期刊
ACS APPLIED MATERIALS & INTERFACES
卷 9, 期 37, 页码 31777-31785出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.7b07000
关键词
oxygen evolution reaction; yolk-shell; binary metal oxide; bimetallic; zeolitic imidazolate frameworks; alkaline media
资金
- National Natural Science Foundation of China [51203036]
- Postdoctoral Science Special Foundation of China [2013T60380]
- Postdoctoral Science Foundation of China [2012M520748]
- Scientific Research Foundation of Beijing Institute of Technology
The development of inexpensive, efficient, and environmentally friendly catalysts for oxygen evolution reaction (OER) is of great significant for green energy utilization. Herein, binary metal oxides (MxCo3-xO4, M = Zn, Ni, and Cu) with yolk-shell polyhedron (YSP) structure were fabricated by facile pyrolysis of bimetallic zeolitic imidazolate frameworks (MCo-ZIFs). Benefiting from the synergistic effects of metal ions and the unique yolk-shell structure, MxCo3-xO4 YSP displays good OER catalytic activity in alkaline media. Impressively, ZnxCo3-xO4 YSP shows a comparable overpotential of 337 mV at 10 mA cm(-2) to commercial RuO2 and exhibits superior long-term durability. The high activity and good stability reveals its promising application.
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