Progress of Aqueous Rechargeable Zn–CO2 Batteries with a Focus on Cathode Bifunctional Catalysts
2025
Peng Chen | Xintao Ma | Qingshun Nian | Chunyi Zhi
Aqueous rechargeable Zn–CO2 batteries are emerging as a promising technology for sustainable energy storage and carbon dioxide (CO2) utilization, owing to their high safety, theoretical capacity, and product diversity. Despite their significant theoretical potential, the application of Zn–CO2 batteries is hindered due to several challenges, including low product‐added value, low current density, poor cycle stability, and excessively high overpotential. These issues hinder the widespread use of Zn–CO2 batteries. Cathode bifunctional catalysts, which can promote the CO2 reduction reaction while lowering the reaction energy barrier for the oxygen evolution reaction, have garnered research interest in recent years. However, a systematic summary is rarely reported. This review mainly focuses on the cathode catalysts of aqueous rechargeable Zn–CO2 batteries, summarizing current research progress in terms of devices, reaction mechanisms, and bifunctional catalysts. This review also discusses existing challenges and prospects, offering enlightenment for the future research of Zn–CO2 batteries.
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