Rechargeable zinc-air batteries have been identified as promising technologies for energy storage. However, developing cost-effective electrocatalysts that can efficiently facilitate the oxygen evolution reaction (OER) and oxygen reduction reaction (ORR) is crucial for their advancement. This work investigates synthesized electrocatalysts composed of graphene-CuO deposited on carbon cloth by doctor blading casting method as bifunctional electrodes in a rechargeable Zn-air battery. The battery integrated with graphene-CuO as the air-cathode electrocatalyst showed superior performance in terms of cycling stability compared to that without CuO. This enhanced performance is attributed to the reversibility of Cu/Cu species during the redox reactions facilitated by the high electrical conductivity of graphene. Therefore, the results suggest the potential of the synthesized electrodes for advancing the development of rechargeable Zn-air batteries.

中文翻译：

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具有氧化铜和石墨烯纳米片双功能电催化剂的可充电锌空气电池


可充电锌空气电池已被认为是有前途的储能技术。然而，开发能够有效促进析氧反应（OER）和氧还原反应（ORR）的经济高效的电催化剂对于其进步至关重要。这项工作研究了通过刮刀铸造法沉积在碳布上的由石墨烯-CuO组成的合成电催化剂，作为可充电锌空气电池中的双功能电极。与不含CuO的电池相比，集成石墨烯-CuO作为空气阴极电催化剂的电池在循环稳定性方面表现出优越的性能。这种增强的性能归因于石墨烯高电导率促进的氧化还原反应过程中 Cu/Cu 物质的可逆性。因此，结果表明合成电极具有促进可充电锌空气电池发展的潜力。