Preparation method of multi-component alloy negative electrode for sodium ion battery, battery and application

The invention provides a preparation method of a multi-component alloy negative electrode for a sodium ion battery, the battery and application, and the preparation method comprises the following steps: melting metal sodium and other metals, stirring and mixing to obtain a sodium metal alloy, cooling, carrying out physical compression rolling on the sodium metal alloy, and carrying out post-treatment to obtain a negative electrode piece. The preparation method has the beneficial effects that the prepared sodium alloy negative electrode is stable in interface, the safety performance of the battery is effectively improved, and the service life of the battery is effectively prolonged. 本发明提供了一种钠离子电池用多元合金负极的制备方法、电池及应用，包括如下步骤：将金属钠与其他金属熔融，搅拌混合，得到钠金属合金，冷却后对钠金属合金进行物理压辊，进行后处理得到负极极片。本发明有益效果：本发明制备的钠合金负极界面稳定，有效地提高了电池的安全性能和使用寿命。