一种玻璃基钠离子全固态电池的制备方法及应用

By controlling the similarity of components and structures to prepare Fe-based oxide glass electrodes and doped NASICON glass-ceramic electrolytes, the interfacial incompatibility problem of sodium-ion all-solid-state batteries was solved, achieving efficient ion transport and stable electrochemical performance, and improving battery safety and cycle life.

CN121839904BActive Publication Date: 2026-07-17QILU UNIVERSITY OF TECHNOLOGY (SHANDONG ACADEMY OF SCIENCES)

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
QILU UNIVERSITY OF TECHNOLOGY (SHANDONG ACADEMY OF SCIENCES)
Filing Date
2026-01-15
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing sodium-ion all-solid-state batteries suffer from problems such as interface incompatibility, high ion transport resistance, and poor cycle stability in terms of electrode materials and solid electrolytes, which affect the rate performance and safety performance of the batteries.

Method used

By controlling the similarity of components and structures, high-performance Fe-based oxide glass electrode materials and Fe2O3-doped NASICON glass-ceramic solid electrolytes were prepared. A one-step melting method and heat treatment process were used to improve the interfacial compatibility and ionic conductivity of the electrode and electrolyte, and reduce porosity.

Benefits of technology

It significantly improves the electrochemical performance and safety performance, cycle stability and capacity retention of sodium-ion all-solid-state batteries, reduces the risk of battery short circuit, and enhances the rate performance and cycle life of the battery.

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Abstract

本发明公开了一种玻璃基钠离子全固态电池的制备方法及应用,属于电池材料制备技术领域,该制备包括以下步骤:以Sb2O3‑B2O3‑P2O5玻璃体系为基础,通过Fe2O3取代Sb2O3进行组分调控制备氧化物玻璃电极;制备Fe基改性的NASICON玻璃陶瓷固态电解质,并进一步调整热处理工艺来提高NASICON玻璃陶瓷固态电解质的离子电导率;以Fe2O3组分同时改性氧化物玻璃电极和NASICON玻璃陶瓷电解质,并将二者组装成全固态钠离子电池,有效提升了电极 / 电解质界面的结构匹配性与相容性,从而显著改善了电池的电化学性能与安全性能。
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