期刊
INORGANIC CHEMISTRY FRONTIERS
卷 6, 期 3, 页码 687-693出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8qi01320a
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资金
- National Natural Science Foundation of China [21473013, 51203008, 21771021, 21822501]
- Beijing Nova Program [xx2018115]
- Fundamental Research Funds for the Central Universities
- Analytical and Measurements Fund of Beijing Normal University
Amorphous hydroxide on a foamed nickel substrate was fabricated by a simple and efficient electrospinning method for the first time. In untreated alkaline medium, amorphous cobalt (Co)-iron (Fe) hydroxide showed oxygen-evolution advantages over the typical reference catalyst (RuO2). When tested with a three-electrode system in 1 M KOH, the obtained amorphous PVP/CoFe1.3 nanofibers possessed remarkable catalytic activity and stability for the oxygen evolution reaction (OER) with a low overpotential of 0.267 V at 100 mA cm(-2) and a low Tafel slope of 47.43 mV dec(-1). The amorphous CoFe microfibers were synthesized by electrospinning, and stable CoFe hydroxides can be further formed in the alkaline environment. The synergistic effect between two different amorphous CoFe-based hydroxides contributed to excellent electrocatalytic activity. Therefore, the design of amorphous CoFe hydroxide enabled the development of a high-efficiency OER catalyst and opens possibilities for the large-scale and environmentally friendly production of water splitting.
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