钠电池负极的作用是什么？

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

负极是钠离子电池的储能承载核心，承担着存储钠离子、实现能量储存的关键作用，直接影响电池的充电速度、循环寿命和放电稳定性。充电阶段，从正极迁移而来的钠离子全部嵌入负极材料的微孔结构中，将电能转化为化学能储存，负极的储钠容量直接决定电池最大储电量；放电阶段，负极精准脱嵌存储的钠离子，使其回流至正极，同步释放电能为设备供电。同时，负极材料的结构稳定性、离子传导效率，直接决定电池的快充能力、抗衰减能力和循环次数，是保障电池长期稳定运行、减少容量衰减的关键部件。

The anode is the energy storage core of Sodium-ion Battery, which undertakes the key role of storing sodium ions and realizing energy storage, and directly affects the charging speed, cycle life and discharge stability of the battery. During the charging process, all sodium ions migrated from the cathode are intercalated into the micropore structure of the anode material, converting electrical energy into chemical energy for storage. The sodium storage capacity of the anode directly determines the maximum power storage of the battery; during the discharging process, the anode accurately deintercalates the stored sodium ions, making them flow back to the cathode, and synchronously releasing electrical energy to supply power to the equipment. At the same time, the structural stability and ion conduction efficiency of the anode material directly determine the fast charging capacity, anti-attenuation ability and cycle times of the battery, which is the key component to ensure the long-term stable operation of the battery and reduce capacity attenuation.