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As a key process of ammonia-based energy prospective, ammonia synthesis via the electrochemical nitrogen reduction reaction (eNRR) at ambient conditions has been widely studied in recent years. However, the poor selectivity and low yield of ammonia are still the main challenges due to the slow kinetics of the eNRR and the competing hydrogen evolution reaction (HER). Herein, we present a simple method to prepare Ru/TiO2 that exhibits high Faradaic efficiency for the eNRR toward producing ammonia. By a sophisticated design of the Ru/TiO2 interface, the binding strength of H-related intermediates is weakened, while the binding strength of N2-related intermediates is strengthened, resulting in promoted reaction kinetics of the eNRR with suppressed HER. This work provides an effective and controllable method of interfacial engineering to boost the activity and selectivity of the electrochemical reaction by controlling the binding strength of reactive intermediates.
This study did not generate any datasets.