Fe nanodot-decorated MoS2 nanosheets on carbon cloth: an efficient and flexible electrode for ambient ammonia synthesis†
Electrochemical reduction of nitrogen to ammonia provides an alternative to the energy- and capital-intensive Haber–Bosch process. However, limited progress has been made to date, as most catalysts lack efficient activity for nitrogen fixation. Here, we report Fe nanodot-decorated MoS2 nanosheets on carbon cloth as an efficient and flexible electrode for the electrochemical nitrogen reduction reaction (NRR) under ambient conditions. The strong electronic interaction between Fe and MoS2 plays a key role in boosting the NRR. Remarkably, the as-obtained Fe–MoS2/CC electrode shows outstanding electrochemical NRR performance with an average NH3 yield of 12.5 µg h−1 cm−2 and a faradaic efficiency of 10.8% at −0.1 V versus the reversible hydrogen electrode. Theoretical and experimental evidence verifies that the high NRR activity originates from the synergistic effect between the Fe nanodots and MoS2 nanosheets. Additionally, the electrode also possesses flexibility and long-term stability, providing a potential approach for integration into practical devices.