一种改性NASICON型钠离子陶瓷电解质膜及其制备方法和应用

By employing quaternary synergistic doping of boron, bismuth, copper, and lanthanum, and designing an interlayer bonding reinforcement layer, the problems of high-temperature sintering, powder activity, and interfacial impedance of NASICON-type NZSP electrolyte membranes were solved, resulting in an electrolyte membrane with high density and high mechanical strength, suitable for high-power and long-life solid-state sodium-ion batteries.

CN121306814BActive Publication Date: 2026-07-17HCB BATTERY CO LTD
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Patent Information

Application Number
CN202511462749.2
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2025-10-14
Publication Date
2026-07-17
Estimated Expiration
2045-10-14

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Abstract

本发明提供一种改性NASICON型钠离子陶瓷电解质膜及其制备方法和应用。该制备方法包括以下步骤：将NZSP电解质、硼源、铋源、铜源、镧源和溶剂混合，得到混合浆料；将混合浆料涂覆在支撑基底上，形成陶瓷电解质生坯层；将层间结合增强型浆料涂覆在陶瓷电解质生坯层上，形成层间结合增强层，得到复合膜；对复合膜进行烧结处理，得到改性NASICON型钠离子陶瓷电解质膜。本发明借助四元协同掺杂体系，降低了后续烧结温度，提高了电解质膜的致密度、室温电导率和拉伸强度，将Zr、P等关键元素的挥发率控制在2wt%以下；利用层间结合增强层的设计，解决了层间结合和离子传导的问题，使层间剥离强度得到提升，界面阻抗显著降低。
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Citation Information

Patent Citations

  • NASICON (Na Super Ion Conductors) structure-based sodium ion solid electrolyte composite material and preparation method and application thereof

    CN106532114A

  • Modified NASICON type sodium ion ceramic electrolyte and preparation method and application thereof

    CN113113664A