钠离子电池用层状氧化物空气稳定性研究进展

Research progress in air stability of layered oxide for sodium-ion battery

层状过渡金属氧化物具有比容量高、成本低等优点,是理想的钠离子电池正极材料。较差的空气稳定性阻碍了层状过渡金属氧化物的实际生产与应用。总结层状氧化物空气稳定性的研究进展,包括在空气中失效的影响因素和相关机理等,并归纳成分调控、结构设计和表面改性等可改善空气稳定性的方法。展望未来提高材料空气稳定性的研究方向。

Layered transition metal oxide is an ideal cathode material for sodium-ion battery due to its high specific capacity and low cost.The poor air stability of layered transition metal oxide hinders its practical production and application.The research progress in air stability of layered transition metal oxide cathode materials is reviewed,including the factors and mechanism of air failure.The methods to improve the air stability of layered oxides are summarized in terms of composition regulation,structure design and surface modification.The future research direction of cathode air stability is prospected.