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Article Abstract
The electrochemical N fixation, which is far from practical application in aqueous solution under ambient conditions, is extremely challenging and requires a rational design of electrocatalytic centers. We observed that bismuth (Bi) might be a promising candidate for this task because of its weak binding with H adatoms, which increases the selectivity and production rate. Furthermore, we successfully synthesized defect-rich Bi nanoplates as an efficient noble-metal-free N reduction electrocatalyst via a low-temperature plasma bombardment approach. When exclusively using H NMR measurements with N gas as a quantitative testing method, the defect-rich Bi(110) nanoplates achieved a NH production rate of 5.453 μg mg h and a Faradaic efficiency of 11.68 % at -0.6 V vs. RHE in aqueous solution at ambient conditions.
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