Abstract
Emerging Fe-based catalysts have been demonstrated to be promising substitutes for platinum-group-metal-based catalysts for the electrocatalytic nitrogen reduction reaction (NRR) under ambient conditions. However, breakthroughs in current Fe-based catalyst improvement are needed to enable efficient ammonia (NH3) synthesis. This review focuses on the development of Fe-based catalysts, with the tailored architecture and compositional design for the NRR discussed, focusing on the role of various active Fe sites in improving high Faradaic efficiency and NH3 yields. The key challenges and future opportunities in this exciting field are also highlighted.
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