The article presents the development of advanced zinc-air batteries using high-performance hybrid electrocatalysts. The researchers developed a novel CoO/carbon nanotube hybrid catalyst for the oxygen reduction reaction (ORR) and a Ni-Fe-layered double hydroxide (NiFe LDH) hybrid catalyst for the oxygen evolution reaction (OER) on the cathode side. These catalysts exhibited higher catalytic activity and durability in concentrated alkaline electrolytes compared to precious metal Pt and Ir catalysts. The primary Zn-air battery demonstrated a high discharge peak power density of ~265 mW cm\(^{-2}\), a current density of ~200 mA cm\(^{-2}\) at 1 V, and an energy density of >700 Wh kg\(^{-1}\). The rechargeable Zn-air battery, configured in a tri-electrode setup, showed an unprecedented small charge-discharge voltage polarization of ~0.70 V at 20 mA cm\(^{-2}\), high reversibility, and stability over long charge and discharge cycles. The high durability of the catalysts contributed to the advanced performance of both primary and rechargeable Zn-air batteries.The article presents the development of advanced zinc-air batteries using high-performance hybrid electrocatalysts. The researchers developed a novel CoO/carbon nanotube hybrid catalyst for the oxygen reduction reaction (ORR) and a Ni-Fe-layered double hydroxide (NiFe LDH) hybrid catalyst for the oxygen evolution reaction (OER) on the cathode side. These catalysts exhibited higher catalytic activity and durability in concentrated alkaline electrolytes compared to precious metal Pt and Ir catalysts. The primary Zn-air battery demonstrated a high discharge peak power density of ~265 mW cm\(^{-2}\), a current density of ~200 mA cm\(^{-2}\) at 1 V, and an energy density of >700 Wh kg\(^{-1}\). The rechargeable Zn-air battery, configured in a tri-electrode setup, showed an unprecedented small charge-discharge voltage polarization of ~0.70 V at 20 mA cm\(^{-2}\), high reversibility, and stability over long charge and discharge cycles. The high durability of the catalysts contributed to the advanced performance of both primary and rechargeable Zn-air batteries.