Solid electrolyte membrane and preparation method thereof

The invention belongs to the technical field of electrolyte membrane preparation, and particularly relates to a solid electrolyte membrane and a preparation method thereof. According to the invention, a biodegradable polymer is dissolved in a lithium salt electrolyte to prepare a spinning solution, and the microfibrous biodegradable solid electrolyte membrane is prepared by an electrostatic spinning method. The prepared solid electrolyte membrane has excellent electrical properties such as wide voltage window, high initial capacity, stable cycle performance, high safety and the like on one hand, has good environmental applicability such as biodegradability, green ecology and the like on the other hand, and can be applied to all-solid-state lithium batteries. 本发明属于电解质膜制备技术领域，具体涉及一种固态电解质膜及其制备方法；本发明将可生物降解的聚合物溶于锂盐电解液中配制成纺丝液，通过静电纺丝法制备得到微观纤维状、可生物降解的固态电解质膜。所制备的固态电解质膜一方面具有电压窗口宽、初始容量高、循环性能稳定及高安全性等优异的电性能，另一方面具有可生物降解、绿色生态等良好的环境适用性，可应用于全固态锂电池中。