In this study, we construct a Cu@ZrO heterogenous structure as a new catalyst that achieves a large NH yield of 15.4 mg h mg. and a high faradaic efficiency of 67.6% at -0.7 V RHE in 0.1 M PBS with 0.1 M NaNO, and it also shows excellent electrochemical durability and structural stability. Theoretical calculations reveal an extremely low adsorption energy of -1.54 eV at Cu surfaces and Cu can significantly reduce the applied overpotential and correspondingly promote the catalytic activity.
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