Wang Yao, Wei Hua, Li Zhengtai, Zhang Xiangyong, Wei Zhiquan, Sun Ke, Li Hongfei
School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu, 610054, China.
Songshan Lake Materials Laboratory, Dongguan, 523808, China.
Chem Rec. 2022 Oct;22(10):e202200132. doi: 10.1002/tcr.202200132. Epub 2022 Jul 27.
Aqueous rechargeable batteries (ARBs) are considered promising electrochemical energy storage systems for grid-scale applications due to their low cost, high safety, and environmental benignity. With the demand for a wide range of application scenarios, batteries are required to work in various harsh conditions, especially the cold weather. Nevertheless, electrolytes would freeze at extremely low temperatures, resulting in dramatically sluggish kinetics and severe performance degradation. Here, we discuss the behaviors of hydrogen bonds and basic principles of anti-freezing mechanisms in aqueous electrolytes. Then, we present a systematical review of the optimization strategies of electrolytes for low-temperature aqueous batteries. Finally, the challenges and promising routes for further development of aqueous low-temperature electrolytes are provided. This review can serve as a comprehensive reference to boost the further development and practical applications of advanced ARBs operated at low temperatures.
水系可充电电池（ARBs）因其低成本、高安全性和环境友好性，被认为是用于电网规模应用的很有前景的电化学储能系统。随着对广泛应用场景的需求，电池需要在各种恶劣条件下工作，尤其是寒冷天气。然而，电解质在极低温度下会冻结，导致动力学显著迟缓以及性能严重下降。在此，我们讨论水系电解质中氢键的行为和抗冻机制的基本原理。然后，我们对低温水系电池电解质的优化策略进行系统综述。最后，给出了水系低温电解质进一步发展面临的挑战和有前景的路线。这篇综述可为推动低温运行的先进水系可充电电池的进一步发展和实际应用提供全面参考。
