钠离子电池的核心优势定位是什么？

What is the function of the cathode of Sodium-ion Battery?    

钠离子电池的核心产业定位是平价安全、资源无瓶颈的普惠型新能源电池，主打大规模储能和低速民用动力两大核心赛道，与锂电池形成精准互补。其核心优势集中在五大维度：一是资源优势，钠资源地壳储量丰富、全球分布均匀，无矿产垄断、无资源卡脖子风险；二是成本优势，原材料廉价、集流体通用铝箔，整体生产成本远低于锂电池；三是安全优势，理化性质稳定，热失控风险极低，极端工况下安全性优异；四是环境适配优势，低温性能突出，高低温环境均可稳定工作；五是寿命优势，循环寿命远超传统铅酸电池，可满足长期商用需求，是性价比极高的普惠型储能动力电池。

The cathode is the core functional component of Sodium-ion Battery, the only source of sodium ions, which directly determines the core performance parameters and use experience of the battery. After the battery production and packaging is completed, all sodium ions participating in the charge and discharge cycle are stored in the lattice of the cathode material. During the charging process, the cathode continuously deintercalates sodium ions, providing ion source for the anode energy storage; during the discharging process, the cathode continuously adsorbs the sodium ions flowing back from the anode to complete charge recovery. The crystal structure, chemical stability and ion conduction rate of the cathode material directly determine the nominal voltage, rated capacity, charge and discharge rate, cycle life, high and low temperature performance and safety of the battery, which is the core breakthrough point for the technological iteration and performance upgrading of sodium batteries, and also the key basis for distinguishing different sodium battery technology systems.