期刊
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
卷 6, 期 11, 页码 15411-15418出版社
AMER CHEMICAL SOC
DOI: 10.1021/acssuschemeng.8b03852
关键词
Electrocatalysis; Oxygen evolution reaction; Nanosheet; Ce species
资金
- Beijing Nature Science Foundation [2182013]
- High-level Teachers in Beijing Municipal Universities - China in the Period of 13th Five-Year Plan [IDHT20180517]
- Capacity Building for Sci-Tech Innovation Fundamental Scientific Research Funds [025185305000/195, 208]
- Youth Innovative Research Team of Capital Normal University - China
- Beijing Municipal Education Commission [201810028007]
- Natural Science Foundation of China [21722702]
The development of highly available low-cost water oxidation electrocatalysts is meaningful for sustainable energy generation. Herein, the unique architecture of double-layered FeNi-based nanosheet-stacks grown on Ni foam (Fe:Ni(OH)(2)/FeCe:Ni-(OH)(2)/NF) was induced by Ce ions in the reaction solution. The as synthesized double-layered catalyst on the substrate of the Ni foam exhibited excellent electrochemical behavior in the catalysis of water oxidation. At the current density of 10 mA cm(-2), the overpotential was as low as 201 mV in alkaline electrolyte. The Tafel slope was only 42.4 mV dec(-1). The high OER electrocatalysis performance of the double-layered nanosheets was related intensely with the introduction of Ce ions, which not only induced the unique architecture of the double-layered vertical nanosheets but also provided more effective charge and mass transfer for electrochemical water oxidation kinetics. These results indicated the promise of expanding the field of lanthanide-doped NiFe-based nanomaterials for applications in energy conversion and storage.
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