钠离子电池正极材料的研究进展

Progress of cathode materials for sodium ion batteries

对于以风能、太阳能、潮汐能等为基础的发电体系和电网削峰填谷措施而言急需解决规模化储能问题,钠离子电池因其安全性高、资源丰富及成本低的优势有望是未来最理想可用于大规模储能领域的电源器件,提高钠离子电池正极材料的能量密度是其成为高效率规模化储能装置的核心问题。分析了聚阴离子化合物、过渡金属氧化物和普鲁士蓝类化合物的结构特征、电化学特性以及改性方法,综述了其最新研究成果,以期为钠离子电池正极材料的技术研究和应用转化提供一定的参考。

There is an urgent need to solve the problem of large-scale energy storage for power generation systems based on wind energy,solar energy and tidal energy and grid peak shaving and valley filling measures.The sodiumion batteries are the most ideal power device for large-scale energy storage in the future due to the advantages of high safety,abundant resources and low cost.Improving the energy density of cathode materials for sodium-ion batteries is the core problem for being high-efficiency large-scale energy storage devices.The structural characteristics,electrochemical properties and modification methods of polyanion compounds,transition metal oxides and prussian blue compounds were analyzed,and the latest research results were reviewed,providing a certain reference for the technical research and application conversion of cathode materials for sodium ion batteries.