期刊
NANOTECHNOLOGY
卷 33, 期 3, 页码 -出版社
IOP Publishing Ltd
DOI: 10.1088/1361-6528/ac2dc9
关键词
Co-ZIF-L; trimetallic hybrid electrocatalyst; solution impregnation; oxygen evolution reaction
资金
- NSFC of China [22072163, 21761132010, 91645114]
- Natural Science Foundation of Liaoning Province of China [2020-YQ-02, 2019-MS-296]
- Open Project of State Key Laboratory of Supramolecular Structure and Materials [sklssm202104, sklssm2021023, sklssm2021035]
The study successfully synthesized a novel FeNi-doped Co-ZIF-L trimetallic hybrid electrocatalyst using a solution impregnation strategy, demonstrating excellent OER activity and stability. This facile and efficient synthetic strategy provides a new entry for the fabrication of ZIFs-derived multi-metallic electrocatalysts.
Development of non-noble multi-metallic electrocatalyst with high oxygen evolution reaction (OER) activity via a simple and low-cost method is of great importance for improving the efficiency of water electro-chemical splitting. Herein, a solution impregnation strategy was proposed to synthesize novel FeNi-doped Co-ZIF-L trimetallic hybrid electrocatalyst using Co-ZIF-L as sacrificial templates and Fe and Ni ions as etchants and dopants. This synthetic strategy could be realized via the etching-coprecipitation mechanism to obtain an amorphous hybrid containing multi-metal hydroxides. The as-prepared electrocatalyst loaded on Ni foam displays a low overpotential of 245 mV at 10 mA center dot cm(-2), a small Tafel slope of 54.9 mV center dot dec(-1), and excellent stability at least 12 h in the OER process. The facile and efficient synthetic strategy presents a new entry for the fabrication of ZIFs-derived multi-metallic electrocatalysts for OER electrocatalysis.
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