“…Advanced energy storage and conversion technologies, such as solar cells, Li-ion batteries, supercapacitors, and metal-air batteries, have recently garnered significant global attention owing to limited fossil fuel reserves and severe environmental degradation. − Among these, rechargeable zinc–air batteries (ZABs) stand out because of their high energy density, low price, environmental protection, and high security, making them viable options for real-world use. − However, existing noble metal catalysts, such as Pt/C, IrO x , and RuO x , for oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) are expensive and scarce, significantly hindering their large-scale application as air cathodes. , Moreover, these catalysts generally have a single catalytic activity and lack stability during charging and discharging cycles. , Therefore, for ZABs to be used in real-world applications, bifunctional oxygen electrocatalysts that are highly effective, long lasting, and reasonably priced must be developed.…”