Optimization of the charging reaction for zinc–air batteries remains a significant challenge. Here, we report a series of zinc–alcohol–air batteries that replace the oxygen evolution reaction with more thermodynamically favorable alcohol oxidation reactions for the charging reaction, using AuPd@C as the model catalyst. These batteries reduce the voltage window between charge and discharge by two orders of magnitude, achieving a remarkable round-trip efficiency (RTE) of over 99% at 0.1 mA cm⁻². This design demonstrates low charging voltage, high energy density (1020.6 kW h kg_Zn⁻¹) and excellent cycling stability (over 1000 h), making it highly valuable for practical applications. The zinc–alcohol–air batteries utilizing C1–C4 alcohols show significant improvements in overall efficiency, offering great potential for biomass energy utilization and further development of zinc–air batteries.

中文翻译：

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具有超窄循环电压窗口的锌-醇-空气电池


优化锌空气电池的充电反应仍然是一项重大挑战。在这里，我们报道了一系列锌-醇-空气电池，它们以 AuPd@C 作为模型催化剂，用热力学上更有利的醇氧化反应代替了电荷反应的析氧反应。这些电池将充电和放电之间的电压窗口降低了两个数量级，在 0.1 mA ^cm-2 时实现了超过 99% 的显着往返效率 （RTE）。这种设计具有低充电电压、高能量密度 （1020.6 kW h kg_Zn-1） 和出色的循环稳定性（超过 1000 小时），使其在实际应用中极具价值。利用 C1-C4 醇的锌-醇-空气电池在整体效率方面显示出显着提高，为生物质能源利用和锌-空气电池的进一步发展提供了巨大的潜力。