离子交换法应用于钾离子电池正极材料的研究进展

Research Progress of Ion Exchange Method Applied to Cathode Materials of Potassium Ion Batteries

由于锂资源短缺,寻找其他新型离子电池是目前电池发展的重要方向之一。其中钾储量丰富、化学性质与锂相近以及其离子能嵌入石墨,因此钾离子电池被视作锂离子电池的潜在替代品。为钾离子电池寻找合适的正极材料是其发展的关键,离子交换法是当无法直接合成目标正极材料时常使用的材料处理方法。本文综述了钾离子电池中离子交换法的应用方式及其优点,并对钾离子电池未来的发展方向做出展望。Due to the shortage of lithium resources, the search for other new types of ion batteries is currently one of the important directions in battery development. Potassium ion batteries are regarded as a potential substitute for lithium ion batteries due to their abundant reserves, similar chemical properties to lithium, and the ability of their ions to be embedded in graphite. Finding a suitable cathode material for potassium ion batteries is the key to their development, and ion exchange is a commonly used material processing method when there is no direct synthesis of the target cathode material. This paper summarizes the application and advantages of the ion exchange method in potassium ion batteries, and gives an outlook on the future development direction of potassium ion batteries.