钠离子电池隧道型氧化物正极材料研究进展

Progress of tunneling oxide cathode materials for sodium ion batteries

钠离子电池(SIBs)凭借其资源循环性和成本优势表现出强大的商业化应用前景。钠离子电池正极材料中的隧道型氧化物具有独特的三维隧道结构,使得Na^(+)在充放电过程中能够更加灵敏地脱出和嵌入,这种隧道型氧化物具有优异的循环稳定性,可以充分发挥材料的电化学性能,因而得到广泛关注。本文针对钠离子电池隧道型氧化物正极材料的制备方法及应用进行阐述,并对隧道型氧化物正极材料的掺杂和包覆改性进行介绍,总结了隧道型氧化物正极材料的优缺点,并针对隧道型氧化物的不足提出建议,对未来的研发方向做出展望。

Sodium ion batteries(SIBs)have shown strong commercial applications in many fields due to their resource recycling and cost advantages.Because of its unique three-dimensional tunnel structure,the tunneling oxide in the cathode material of sodium ion battery can be more sensitively removed and embedded in the process of charging and discharging,this kind of tunneling oxide has been paid much attention because of its excellent cycle stability,which can give full play to the electrochemical properties of materials.In this paper,the preparation and application of tunnel oxide cathode materials for sodium ion batteries were described,and the doping and coating modification of tunnel oxide cathode materials were introduced,the advantages and disadvantages of the tunnel-type oxide cathode materials were summarized,and the reasonable suggestions for the future research and development were put forward.