A sodium-ion gel polymer electrolyte considering low temperature and high pressure, and a preparation method and application thereof
By constructing an armor-like gradient interface phase derived from vinylene carbonate and adjusting the solvation structure of sodium ions, the prepared sodium ion gel polymer electrolyte solved the cycling problem under low temperature and high pressure, achieving long-term stability and efficient ion transport of sodium metal batteries.
CN122418005APending Publication Date: 2026-07-17BEIJING UNIV OF CHEM TECH
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- BEIJING UNIV OF CHEM TECH
- Filing Date
- 2026-04-10
- Publication Date
- 2026-07-17
Smart Images
Figure CN122418005A_ABST
Abstract
本发明公开了一种兼顾低温和高压的钠离子凝胶聚合物电解质及其制备方法和应用，属于凝胶聚合物电解质技术领域；所述钠离子凝胶聚合物电解质包括电解质盐、非水有机溶剂、单体和引发剂；所述引发剂为偶氮二异丁腈，所述电解质盐为钠盐，电解质中钠盐的摩尔浓度为0.7~1.3M；所述非水有机溶剂为碳酸乙烯酯和碳酸二乙酯，且两者之间的体积比为2~5:5~7；所述单体为碳酸亚乙烯酯，以非水有机溶剂与单体之间的总体积为100%计，非水有机溶剂的体积占比为60%，单体的体积占比为40%~70%。本发明的电解质中通过构建一种碳酸亚乙烯酯衍生的类铠甲梯度界面相，有效抑制了界面的氧化分解，并显著增强界面稳定性；该电解质用于钠金属电池，能够在‑30℃和4.2V高电压下实现长期稳定循环。
Need to check novelty before this filing date? Find Prior Art