Rechargeable zinc–air batteries (ZABs) is primarily driven by the couple of oxygen evolution reaction (OER) and oxygen reduction reaction (ORR). Currently, it is still challenging to develop cost-effective, highly efficient, and robust bifunctional catalysts for ZABs. Herein, a novel silver decorated cobalt carbonate (Ag@CoCO₃) hybrid catalyst is proposed as the potential bifunctional catalyst to drive OER and ORR for ZABs. Engineering Ag nanoparticles onto the surface of CoCO₃ microsphere not only facilitates the charge transfer, but also modulates the electronic structure, which are beneficial to intrinsic bifunctional activity. As a result, this Ag@CoCO₃ catalyst yields a substantially enhanced bifunctionality compared to the pristine CoCO₃ catalyst. Moreover, the homemade Ag@CoCO₃ based ZABs provides a high peak power density of 146 mW cm⁻², superior to 107 mW cm⁻² for CoCO₃ based ZABs and 111 mW cm⁻² for commercial Pt/C-IrO₂ based ZABs.

可充电锌空气电池 (ZAB) 主要由析氧反应 (OER) 和氧还原反应 (ORR) 驱动。目前， 为 ZAB 开发具有成本效益、高效且稳定的双功能催化剂仍然具有挑战性。在此，提出了一种新型的银装饰碳酸钴（Ag@CoCO ₃）混合催化剂作为潜在的双功能催化剂，以驱动 ZAB 的 OER 和 ORR。在 CoCO ₃微球表面上工程化银纳米粒子不仅促进电荷转移，而且调节电子结构，这有利于内在双功能活性。因此，与原始 CoCO 相比，这种 Ag@CoCO ₃催化剂产生了显着增强的双功能性₃催化剂。此外，自制的Ag @ COCO ₃基于ZABs提供的146毫瓦cm的高功率密度峰值^-2，优于107毫瓦厘米^-2为COCO ₃基于ZABs和111毫瓦厘米^-2用于商业的Pt / C-的IrO ₂基于ZAB。