Post Nitrogen Electrocatalysis Era From Li–N₂ Batteries to Zn–N₂ Batteries

Abstract Metal–N₂ batteries attract considerable research attention due to the dual‐functional characteristics applied in energy storage and conversion, as well as electrochemical artificial NH₃ yield. Nonetheless, it has been found that not all kinds of metal–N₂ batteries are suitable for combining the above two applications. Herein, recent advances in metal–N₂ batteries are summarized. First, the electrochemical reaction mechanisms for all types of metal–N₂ batteries, including organic Li/Na/Al–N₂ batteries and aqueous Zn/Al–N₂ batteries are discussed, and then, a critical assessment of current challenges and future applications is provided. Considering the different electrochemical reaction mechanism in the metal–N₂ batteries, the electrocatalytic performance for the reported catalyst cathodes is summarized and compared. Then, a multi‐dimensional feasibility and strategy analysis for the developments of rechargeable aqueous Zn–N₂ batteries is provided, including the three dimensions of cathode catalyst, electrolyte, and metal anodes. Last, specific suggestions and ideas for the further developments of the rechargeable aqueous Zn–N₂ batteries are put forward, with the hope of inspiring the further developments for the green, sustainable, and high‐energy‐density metal–N₂ systems in the future.