Recent Advances in Electrocatalysts Toward Nitrate Reduction Reaction for Ammonia Synthesis

Abstract Ammonia (NH 3 ) is not only an essential raw material for the production of nitrogenous fertilizers but also a promising carbon‐free energy carrier. The electrocatalytic NO 3 − reduction reaction (eNO 3 RR) not only solves the NO 3 − pollution but also facilitates renewable NH 3 production under ambient conditions. However, the NH 3 productivity is still too low to meet the requirements for practical applications. Thus, suitable electrocatalysts are required. This review highlights the latest important progress of electrocatalysts for eNO 3 RR. First, the reaction pathways of eNO 3 RR are reviewed briefly. Then, various electrocatalysts including noble metal and non‐noble metal materials for eNO 3 RR are reviewed, with a special emphasis on the relationship between their structures and eNO 3 RR performance. Lastly, the challenges and prospects in this field are discussed. This review may provide a guide for the development of efficient electrocatalysts for eNO 3 RR.