Journal
INORGANIC CHEMISTRY FRONTIERS
Volume 8, Issue 11, Pages 2889-2899Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/d1qi00267h
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Funding
- China Postdoctoral Science Foundation [2017M612496]
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NiFe-based non-precious-metal catalysts show promising performance as substitutes for noble-metal-based catalysts, with NiFe-MOF-5 demonstrating good OER and HER activities in alkaline media. The catalyst achieves an overpotential of 168 mV at 10 mA cm(-2) for the OER, and outperforms most previously reported non-precious-metal electrocatalysts in 1 M KOH.
NiFe-based non-precious-metal catalysts are promising substitutes for noble-metal-based catalysts due to their outstanding electrochemical performance and endurance. Herein, a NiFe-based MOF supported on Ni foam was designed to obtain good OER and HER activities in alkaline media. Thanks to the 3-D hierarchical layer structure distributed on Ni foam, the high exposure of active sites, and the good conductance, as-obtained NiFe-MOF-5 presented advantages for its use in electrochemical catalysis. As a result, an overpotential of 168 mV at 10 mA cm(-2) for the OER was reached. Moreover, the catalyst only required a cell voltage of 1.57 V at 10 mA cm(-2) for overall water splitting, and it outperformed most previously reported non-precious-metal electrocatalysts in 1 M KOH.
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