The development of electrocatalysts is of vital importance to the OER. In this work, an optimized MOF electrode, Ir-NiFe-btz/NF, was synthesized by incorporating ultralow levels of Ir nanoparticles into an ionic bimetallic MOF. Under alkaline conditions, the prepared MOF electrode demonstrated outstanding OER activity and stability with a low overpotential of 182 mV to reach 10 mA cm and no obvious increase of overpotential in a chronovoltammetry test over 100 hours at 100 mA cm.
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