期刊
JOURNAL OF COLLOID AND INTERFACE SCIENCE
卷 532, 期 -, 页码 650-656出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2018.08.038
关键词
ZnxCO3-xO4; Binary metal oxide; Zeolitic imidazolate frameworks; Oxygen evolution reaction
资金
- National Natural Science Foundation of China [21505031]
- Natural Science Foundation of Hebei Province [B2016201018, B2018201214]
- colleges and universities science technology research project of Hebei Province [Z2015096]
The construction of highly active and stable non-noble metal electrocatalysts for oxygen evolution reaction (OER) is a crucial requirement for green energy utilization. Herein, we report a novel hybrid nanostructure of Zn/Co bimetallic oxide (ZnxCo3-xO4) hollow polyhedron through a pyrolysis-oxidation strategy derived from bimetallic Zn, Co-zeolitic imidazolate frameworks (ZnCo-ZIFs) rhombic polyhedral. Benefiting from the synergistic effects between highly active metal oxide and the unique polyhedron structure, the ZnxCo3-xO4 hollow polyhedron hybrid displayed outstanding electrocatalytic performances in alkaline media. When the ZnxCo3-xO4 polyhedron was employed as electrocatalysts for OER, a potential as low as 1.66 V (vs. RHE) was required to deliver the current density of 10 mA cm(-2) in 1 M KOH, and ZnxCo3-xO4 still presented superior activity after continuously working for cyclic voltammetric scanning of 1000 cycles. (C) 2018 Elsevier Inc. All rights reserved.
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