水系钠离子电池的研究进展及实用化挑战

Research Progress and Practical Challenges of Aqueous Sodium-Ion Batteries

水系钠离子电池因其安全性高、成本低、环境友好等突出优势近些年来受到了广泛而深入的研究,在取得巨大进展的同时也逐步开始了产业化进程.但是与有机体系二次电池相比,水系钠离子电池仍然极大地受限于电解液较窄的电化学稳定窗口和电极材料较差的循环稳定性.迄今为止,如何解决上述问题依然是这一领域发展的关键.本综述主要概述了水系钠离子电池电极材料、电解液以及集流体的最新进展,分析了开发高性能水系钠离子电池的挑战和可能的解决策略,并进一步讨论了水系钠离子电池的发展前景.

Aqueous sodium-ion batteries recently have been widely and deeply studied in the energy field due to their prominent advantages such as high safety,low cost and environmental friendliness.Remarkable progresses of aqueous sodi-um-ion batteries gradually encourage their process of industrialization.However,compared with the organic secondary ion batteries,the development of aqueous sodium-ion batteries is limited by the narrow stable voltage window of the electrolyte and the poor cycle stability of the electrode material.How to solve these problems is still the key to the development of aqueous sodium-ion batteries.The latest developments in electrode materials,electrolyte and current collector of aqueous sodium-ion batteries,as well as challenges and possible solutions for developing high-performance aqueous sodium-ion bat-teries are mainly summarized in this review.Furthermore,the development prospects of aqueous sodium-ion batteries are discussed.